1. Location. Sites designated or dedicated for schools shall meet the following location standards to the maximum extent practicable:

1. The building setback areas required under this Section 146-4.2 shall be unobstructed from the ground upward except for fences, landscaping, and other specific building features specified as exceptions to the required setbacks in Section 146-4.2.4 (Exceptions and Encroachments) or otherwise identified as exceptions in this UDO.

1. The adjusted area shall form a single, closed polygon of compact and logical shape.

2. For the MU-TOD district, the adjusted area shall be determined by Station Area Plans.

3. The adjusted area shall not include any lands that the applicant is otherwise required to dedicate pursuant to statute, or any additional, voluntary dedication of land, except for land related to streets and rights-of-way as described in Section 146-4.2.1.C.5 below.

4. The adjusted area shall exclude any floodplain areas and any existing publicly owned land.

5. The adjusted area shall include the right-of-way of all public and private streets surrounded by the area's other eligible land uses, as well as one-half of the right-of-way of any public or private streets along the area's perimeter. For purposes of determining densities, limited access highways shall not be included as public and private streets and shall not be included in the adjusted area.

6. The adjusted area may include any private common space, including recreation facilities, parking areas, detention ponds, or accessory structures, such as a maintenance facility or administrative office, customarily associated with the adjusted area's housing type, as well as any golf course that will be conveyed to the City for public use or will be held by a homeowners’ association or other entity approve by the City for private use.

7. The maximum residential densities indicated in Section 146-4.2.2 are not guarantees that the listed can be achieved on any individual lot or parcel, or within any development, and do not imply that the City is obligated or willing to use any of the tools in Section 146-5.4.4 (Flexibility and Relief Procedures) to enable those residential densities to be achieved. Those maximum densities may not be achievable for a number of reasons, including but not limited to the shape or configuration of the lot or parcel, topographic or geologic conditions on the lot or parcel, or the presence of environmentally sensitive areas or utility easements on or through the parcel, (Ord. No. 2019-49 § 1, 08-19-2019)

1. The dimensional standards for residential districts shown in Table 4.2-1 shall apply to all development in the listed zone districts in Subareas A and B.

2. The dimensional standards for residential districts shown in Table 4.2-2 shall apply to all development in the listed zone districts in Subarea C, unless an applicant uses the optional standards available in Section 146-4.2.3.A (Subarea C Small Residential Lot Standards). All development required to comply with Table 4.2-2 shall also comply with the requirements of Section 146-4.6.5 (Parking Design and Location), and the event of a conflict between required dimensions in Table 4.2-2 and Section 146-4.6.5, the requirements of Section 146-4.6.5 shall apply.

1. Purpose. The purpose of the Small Residential Lot single-family development standards is to create high-quality mixed residential developments that will retain their social and economic value over time and provide housing for individuals and families seeking convenience, a range of housing choices, and generous and high quality open space amenities. Small Residential Lot developments should be designed to provide a variety of lot sizes that are distributed in groupings throughout the development so that large areas of one lot size do not exist. The Small Residential Lot subdivision shall also be specifically designed to provide adequate light and air between units, adequate drainage between lots, interior and exterior privacy, open space relief on the individual lot and throughout the neighborhood, low maintenance building materials, innovative and architecturally interesting home design, attractive streetscapes, and adequate parking. In addition, the standards are designed to increase the variety of lot sizes, preserve open space, enhance natural features and site amenities, provide landscaped buffers, and promote energy conservation.

2. Minimum Lot Size. The following standards apply to all development of Small Residential Lots unless the Green Court Dwelling standards of Section 146-4.2.3.C or the Motor Court Dwelling standards of Section 146-4.2.3.E provide a different standard.

3. Amount and Distribution of Small Residential Lots. The following standards apply to all development of Small Residential Lots unless the Green Court Dwelling standards of Section 146-4.2.3.C or the Motor Court Dwelling Standards of Section 146-4.2.3.E provide a different standard. For purposes of this Section 146-4.2.3.A.3, single-family attached dwelling units do not count against the maximum permitted number of Small Residential Lots included in a Master Plan.

4. Minimum Residential Building Setbacks.

5. Required Open Space. The following standards apply to all development of Small Residential Lots unless the Green Court Dwelling standards of Section 146-4.2.3.C or the Motor Court Dwelling Standards of Section 146-4.2.3.E provide a different standard.

6. Architectural Standards. All developments containing Small Residential Lots, including but not limited to those organized as Green Court Dwellings or Motor Court Dwellings, shall comply with the standards in Section 146-4.8.3 (Design Standards for Single-Family Detached and Two-Family Dwellings).

7. Garage Mitigation. The following standards apply to all development of Small Residential Lots unless the Green Court Dwelling standards of Section 146-4.2.3.C or the Motor Court Dwelling Standards of Section 146-4.2.3.E provide a different standard.

8. Product Mix.

9. Other Standards on Layout and Connectivity Continue to Apply. Except as modified by this Section 146-4.2.3.A, the provisions of Sections 146-4.3.9 (Block Dimensions), 146-4.3.10 (Lot Design and Layout),146-4.3.11(Streets and Alleys), 146-4.3.12 (Sidewalks, Trails, and Bicycle Paths), 146-4.5 (Access and Connectivity), and 146-4.7 (Landscape, Water Conservation, Storm water Management) apply to residential developments under Sections 146-4.2.3.A (Subarea C Small Residential Lot Standards), 146-4.2.3.C (Green Court Dwellings), 146-4.2.3.D (Loop Lane Dwellings) and 146-4.2.3.E (Motor Court Dwellings).

1. Purpose. The purpose of the Flexible Residential Lot Option is to offer additional flexibility for the creation of diverse residential housing types in with supporting non-residential uses in Subarea C, beyond that flexibility provided by Sections 146-4.2.3.A (Subarea C Small Residential Lot Standards), 146-4.2.3.C (Green Court Dwellings), and 146-4.2.3.E (Motor Court Dwellings), by removing minimum lot size standards for residential lots in return for compliance with the standards in this Section 146-4.2.3.B and those purposes and standards in the Subarea C Flexible Residential Lot Handbook.

2. Applicability.

3. Standards. All development shall comply with the following standards:

4. Procedure for Approval. Applications for approval under this Section 146-4.2.3.B shall be reviewed under the Master Plan procedure in Section 146-5.4.1.E or the Major Subdivision procedure in Section 146-5.4.2.A, as applicable.

1. The following standards apply to all Green Court Dwelling developments, regardless of whether they are included in a development containing Small Residential Lots.

b. Standards. Green Court Dwelling developments shall comply with the following standards.

i. Only single-family detached, two-family (duplex) or attached dwellings are permitted in a Green Court Dwelling development.

ii. The minimum Green Court open space width shall comply with one of the following standards:

(a) A standard Green Court open space must have a minimum width of 30 feet or the height of the tallest residential building facing the Green Court open space, whichever is greater; or

(b) A variable width Green Court open space must have the minimum width described in Subsection b.i above for at least 75 percent of its length, and no portion of the remainder that is fronted by one- or two-story dwelling units is less than 15 feet in width and no portion of the remainder that is fronted by three-story dwelling units is less than 25 feet in width;

iii. If no more than six dwelling units face the Green Court open space, and none of the dwelling units are more than three stories in height, the Director may approve a maximum of one Green Court open space within each platted block with a minimum width of 20 feet for any portion fronted by one- or two-story dwelling units and a minimum width of 30 feet for any portion that is fronted by three-story dwelling units.

iv. The Green Court open space width is calculated by measuring from the narrowest dimension of front building face to front building face. For the purposes of establishing the minimum Green Court open space width, building height is measured to the highest point of the coping of a flat roof or the deck line of a mansard roof, or to the peak of a gable, pitched or hip roof.

v. In Subareas A and B, no more than 14 dwelling units may face the same Green Court open space.

vi. In Subareas C, no more than 14 dwelling units may face the same Green Court open space, except that the number of units facing a Green Court open space may be increased to 24 dwelling units, if both ends of the Green Court open space have frontage on a public street and the design is approved by the Department of Public Works, Life Safety. The length of the Green Court open space shall not exceed 360 feet in length measured from any public or private street or access drive (refer to graphic below).

vii. Each Green Court Dwelling development shall have direct frontage on and pedestrian access to a street that includes on-street parking and sidewalks on both sides.

viii. Both end units of each group of attached Green Court Dwellings shall abut a public or private street or alley, without intervening common open space between the side wall of the end unit and the right-of-way of the private or public street or alley, except as provided in Subsection ix below.

ix. Green Courts not meeting the standard Subsection viii shall be approved by the Planning Director in the circumstances listed in this Subsection ix:

(a) Perimeter Conditions. Along arterial streets, major utility corridors, major drainage facilities, or other similar facilities that preclude street connectivity; provided, that:

(i) The maximum continuous frontage of Green Courts Dwellings along an arterial or major drainage facility is limited to 700 feet; and

(ii) The continuous frontage of Green Courts Dwellings must be separated from other continuous frontages of Green Courts Dwellings by a pocket park tract of at least 60 feet in width, or by a street connection.

(iii) Not more than two continuous frontages meeting the standards in Subsections i and ii above are allowed on a single perimeter condition that limits street connectivity.

(b) Infill. For infill development and infill development parcels where existing development precludes street connectivity; provided, that:

(i) No more than 25 percent of the groups of attached Green Court Dwellings, or no more than two of the groups of attached Green Court Dwellings, whichever is greater, do not comply with Subsection viii above; or

(ii) Up to three contiguous groups of attached Green Court Dwellings and related Green Court open spaces may not comply with Subsection viii above if they are separated from other groups of attached Green Court Dwellings and related open spaces by another non-Green Court Dwelling land use allowed in Table 3.2-1, or by a street connection.  For the purposes of this Subsection viii, contiguous shall mean sharing a property boundary, alley, or common driveway or other non-buildable parcel.

(c) Additional Standards. All exceptions shall comply with the following standards:

(i) No group of attached Green Court Dwellings may include more than five dwellings on each side of the Green Court open space; and

(ii) In addition to the number of parking spaces required for each Green Court Dwelling by Section 146-4.6 (Parking, Loading, and Stacking), the Green Court development must provide guest parking for motor vehicles at the rate of one-half parking space per Green Court Dwelling. Required guest parking must be located within 200 feet of the front entrance of the dwelling it serves and must be located (a) on a public or private street, or (b) in a parking lot or garage abutting and visible from a public or private street.

x. At least 50 percent of the Green Court open space area shall be landscaped and shall be designed to accommodate foot traffic and play areas. Sidewalks should be located to accommodate pedestrian access while maximizing use of the Green Court open space. Trees are allowed in open areas but should be located along the perimeter and typically be canopy tree species to allow usable space under the tree canopy.

xi. All Green Court Dwellings shall have front entry features (porches or stoops) fronting on a Green Court open space or a street. If porches are provided to meet this requirement, they shall be a minimum 45 square feet in area and a minimum of five feet wide in the narrowest porch dimension. Porches and stoops facing the Green Court open space may extend up to five feet beyond the building façade provided that no roof or associated structure exceeds one story in height.

xii. Above grade utility, cable, telecommunication infrastructure or similar improvements should be located outside of the central Green Court open space area.

xiii. Maintenance and management of common areas shall be provided by a homeowners’ association or other similar entity.

xiv. All standards in Section 146-4.5 (Access and Connectivity) apply to Green Courts Dwellings.

1. The surface of the Loop Lane shall be at least 23 feet wide to accommodate two-way vehicle circulation.

2. No portion of the Loop Lane shall extend more than 250 feet from the public street to which it gives access.

3. The common area surrounded by the Loop Lane shall be at least 60 feet wide.

4. Each lot fronting on a noncurved section of the Loop Lane shall have a minimum lot width of 50 feet at the front lot line; each lot fronting on a curved section of the Loop Lane shall have a minimum lot width of 30 feet at the front lot line.

5. The Loop Lane shall be surfaced with concrete. Both the Loop Lane and the common area surrounded by the Loop Lane shall be dedicated to a homeowners’ association with responsibility for maintaining the Loop Lane and the common area. The homeowners’ association shall have the power to enforce payment of dues from individual homeowners in order to maintain the Loop Lane and common area. The homeowners’ association shall be created and the Loop Lane and common area shall be dedicated to the association before a certificate of occupancy shall be issued for any dwelling unit in the Loop Lane Dwelling development.

6. Individual driveways leading from the Loop Lane to each home shall be at least 18 feet long, as measured between the front of the garage or carport and the closest edge of the Loop Lane.

7. The design of the Loop Lane shall permit a passenger vehicle to back out of an individual driveway and turn 90 degrees in either direction without any portion of the vehicle: (a) leaving the individual driveway from which the vehicle is exiting or the Loop Lane, or (b) entering on or over the individual driveways of any other residence. The ASHTO turning template for a "P" design vehicle shall be used to confirm that these standards are met.

8. The Loop Lane Dwelling development shall comply with off-street parking requirements applicable to single-family dwellings and shall provide one guest parking space per dwelling unit with a minimum of one such space located within 125 feet of each dwelling unit. Such parking may be located on the abutting public street, as head-in parking in the common area, or as parallel spaces on individual lots. On-street parking on the Loop Lane shall be prohibited.

9. Each Loop Lane extending longer than 100 feet from the public street shall have a fire hydrant adjacent to the shared driveway at a point determined by the Fire Department.

1. The following standards apply to all Motor Court Dwelling developments, regardless of whether they are included in a development containing Small Residential Lots.

1. Larger than 120 Square Feet. Accessory buildings in residential districts larger than 120 square feet shall:

2. Smaller than 120 Square Feet. Buildings that are accessory to residential uses and that are equal to or smaller than 120 square feet in floor area may be placed within the required side and rear setbacks but must be set back a minimum of three feet from all property lines. Accessory buildings meeting this requirement are exempt from the fire safety construction standards of the International Building Code (IBC).

3. Carports and Garages. Carports and private residential garages detached from the principal building requiring a building permit shall:

1. An accessory structure shall not be located within a required setback.

2. The height of the accessory structure shall not exceed the height of the primary building on the lot or 24 feet, whichever is less.

3. Accessory buildings shall be screened from private common space, public rights-of-way, parks, open spaces, and residential uses by landscaping, berms, and/or architecturally compatible walls that comply with the standards in Section 146-4.7 (Landscape, Water Conservation, Storm water Management).

4. In a Mixed-Use district accessory buildings shall be constructed with materials and building forms similar to the primary building on the site.

5. In a Special Purpose district accessory buildings shall be constructed with materials and building forms compatible with the surrounding non-residential area.

6. Accessory buildings for agricultural uses shall:

1. Sight Triangle Area. The sight triangle distance for street intersections is defined in the Aurora Roadway Design and Construction Specifications Manual.

2. Obstruction Prohibited. No person shall place or maintain any structures, fences, landscaping, or any other objects within any sight triangle that obscures sight visibility above the sight triangle area for more than six horizontal inches between a height of 26 inches and 96 inches above the roadway surface. Trees with an expected mature Diameter at Breast Height (DBH) of six inches or less may be planted and maintained within the sight triangle area if all branches are trimmed to maintain a clear vision for a vertical height of 96 inches above the roadway surface.

1. Intent and Authority. This subsection is enacted to protect public health, safety, welfare, the environment, and wildlife resources. This subsection is authorized pursuant to the land use authority of the City.

2. Applicability. This subsection applies to certain plugged oil and gas wells (plugged well), flowlines, and reserve pits, as those terms are defined in the City Code of Aurora at Section 135-1(f)(2), located within a planned, or active development in the City of Aurora.

3. Locating and Assessing Plugged Wells.

4. Locating and Assessing Reserve Pits. Prior to issuance of a grading permit within a development containing a known reserve pit, the reserve pit shall be tested for expansive soils and the results submitted to the City. Reserve pits containing expansive soils in locations proposed for buildings shall be subject to the provisions of City Code or other City regulations.

5. Locating and Assessing Abandoned Flowline. Prior to issuance of a grading permit within a development containing a flowline, the history and condition of the flowline shall be assessed. If the flowline was properly abandoned according to ECMC rules, and if the flowline will not conflict with the planned construction, it may be left in place. If the flowline is removed, the fluids within the flowline shall be recovered and properly disposed of. Any fluid loss as a result of removing the flowline shall be reported to the City and shall be remediated at the City’s direction, in compliance with current ECMC rules.

6. Establishing a Plugged Well Setback Area.

7. Restrictions Applicable to the Plugged Well Setback Area Established in Subsection (k)(6) of This Section.

8. Variances to Plugged Well Setback Area Requirements. Upon request by the applicant, the Director of the Planning and Business Development Department may approve, at the Director’s sole discretion, a site-specific change in the size or shape of a setback area so long as the setback area remains sufficient to allow necessary equipment to access and replug the well if necessary in the future. All variances must remain protective of public health, safety, welfare, the environment, and wildlife resources.

9. Exemption for Existing Structures. If a structure has already been constructed on the date of implementation of this subsection, then that structure shall be exempted from the requirements of this subsection regardless of the proximity to a plugged well.

10. Nonemergency Plugged Well Replugging Notice. If, based on the City’s assessment of a plugged well, the City determines that a plugged well must be replugged in order to protect human health and the environment, the City will notify the property owner in writing. The City will also notify ECMC of the conditions of the plugged well. The City will include the basis for the determination, the specific action items that must be completed, and a date certain for completion of the work. The City will work with the property owner on compliance in a reasonable manner. Failure to comply with the City’s determination notice may result in the City initiating appropriate action to address the noncompliance.

11. Emergency Plugged Well Access. In the event of an emergency resulting in an immediate threat to human health, property, or the environment, the City, State, or authorized contractor, may, without obtaining prior approval from the property owner, enter the setback area to conduct whatever actions are necessary to abate such emergency situation. Examples of an emergency situation include, but are not limited to, uncontrolled hydrocarbons or gas emissions escaping the plugged well, significant and ongoing soil contamination from the plugged well, and other similar exceptional situations. (Ord. No. 2025-68 § 2, 08-25-2025; Ord. No. 2025-09 §§ 1, 2, 02-10-2025; Ord. No. 2022-17 § 7, 04-25-2022; Ord. No. 2020-37 § 14, 10-05-2020; Ord. No. 2019-49 § 1, 08-19-2019)

1. Review and approval of a subdivision plat shall not be required for any of the following:

2. An exception from the requirement to obtain a subdivision plat approval pursuant to this Subsection 146-4.3.1.c does not authorize any development without compliance with all other applicable provisions of this UDO. (Ord. No. 2020-01, 03-25-2020; Ord. No. 2019-49 § 1, 08-19-2019)

1. Neighborhood Plan (Section 146-5.4.2.A.2.a);

2. Final Plat (Section 146-5.4.2.A.2.b).

1. Minor Plat Amendments (Section 146-5.4.2.B.1);

2. Vacation of Plat without Established Streets (Section 146-5.4.2.B.2);

3. Vacation of Established Streets (Section 146-5.4.2.B.3); and

4. Other Changes to Approved Final Plats (Section 146-5.4.2.B.4).

1. Subdivisions shall be organized to protect, appropriately use, or enhance the following types of natural resources and features, by including such areas in private common space and dedicated public park land and open space areas, by requiring construction in these areas to avoid sensitive land features to the maximum extent practicable, or by mitigating the impacts of construction on these features to the maximum extent practicable. These features shall be connected or integrated with similar features on adjacent lands to the maximum extent practicable:

2. Grading on or near major ridgelines and swales shall maintain their approximate topographic form. Significant reconstruction of major or prominent topographic features shall be avoided to the maximum extent practicable.

3. Slope conditions shall be addressed as follows:

4. Potential wildlife habitat shall be protected from potential water quality impacts as follows:

5. All subdivisions shall be designed to avoid and/or minimize soil erosion, both during construction and at final stabilization, in accordance with the Aurora Rules and Regulations Regarding Storm water Discharges Associated with Construction Activities.

6. Avoidance of natural features identified in this Section 146-4.3.5 shall be accomplished through the inclusion of a site analysis with each Master Plan, or with each Site Plan or plat when a Master Plan is not required. The site analysis shall describe the following:

1. Clearly visible bluffs, rock outcroppings, or landforms that are intended to be protected and preserved as natural community assets;

2. Water features, major drainages, or designated open spaces, including greenway or trail corridors, at least 100 feet in width;

3. An arterial street meeting the requirements of the Aurora street standards; or

4. A collector street that has a landscaped median at least 14 feet in width and that complies with all other standards for a collector street as described in the Aurora Roadway Design and Construction Specifications Manual. If a street with planted median is used to define adjacent neighborhoods, the same fencing style may not be used on both sides of the street. (Ord. No. 2019-49 § 1, 08-19-2019)

1. The following standards apply to all subdivisions or parts of subdivisions except those that include Small Residential Lots pursuant to Section 146-4.2.3.A (Subarea C Small Residential Lot Standards).

2. In portions of Subarea A that are not located in the R-1 zone district or the MU-OA zone district, and in portions of Subarea B that are not located in the R-1 zone district, subdivisions of land may include the following types of lots, but the inclusion of such lots shall not relieve the applicant of complying with the requirements of Table 4.2-1 and Subsection 1 above.

3. Subdivisions in Subarea C that include Small Residential Lots shall comply with provisions for lot distribution and product mix in Section 146-4.2.3.A (Subarea C Small Residential Lot Standards) instead of the standards in Subsection 1 above. (Ord. No. 2019-49 § 1, 08-19-2019)

1. Provides for efficient movement of pedestrians, bicyclists, and motorists within the subdivision and to and from adjacent development;

2. Is consistent with the Comprehensive Plan, any Master Plans, or Site Plans approved for the property, and with the results of any circulation analysis;

3. Meets the requirements of Section 146-4.5 (Access and Connectivity); and

4. Meets all applicable provisions of the Aurora Roadway Design and Construction Specifications Manual with regard to curves, grades, intersections, continuity, traffic flow, terminating streets, and traffic calming.

1. All public improvements shall be constructed in compliance with the standards and specifications established by this Section 146-4.3, Section 146-5.4.2 (Subdivision of Land), the Aurora City Code and adopted regulations, including all design standards and requirements in the Aurora Roadway Design and Construction Specifications Manual, the Aurora Public Utility Improvement Rules and Regulations Regarding Standards and Specifications, the Aurora Water Standards and Specifications Regarding Water, Sanitary Sewer and Storm Drainage Infrastructure, and the Parks, Recreation and Open Space Dedication and Development Criteria Manual.

2. No subdivider shall be relieved of the duty to construct public improvements for the subdivision until all public improvements are constructed, approved, and accepted by the City Engineer.

3. The subdivider shall submit plans, profiles, and specifications for the construction of all public improvements for which no specifications or standards are established by Aurora. Such plans, profiles, and specifications shall be prepared and authenticated over the seal of a professional engineer, duly licensed to practice in Colorado.

4. A subdivider may, upon City approval, construct public improvements to standards higher than the City's specifications for the design and construction of roadways established by the City Engineer. Before the City approves such higher standards, the subdivider shall submit maintenance plans relating to such public improvements.

1. In addition to the 100-year floodplain, other lands subject to flooding or land that if developed or improved would cause improved areas within the City to be subject to flooding shall not be platted for residential occupancy or for any other use that may increase danger to health, life, or property, or aggravate the flood hazard to surrounding properties.

2. All subdivisions shall include a storm water management system designed in accordance with the City of Aurora Public Utility Improvements Rules and Regulations Regarding Standards and Specifications and the City of Aurora Storm Drainage Design and Technical Criteria and the Aurora Water Standards and Specifications Regarding Water, Sanitary Sewer and Storm Drainage Infrastructure and approved Master Plans. The storm water management system shall provide adequate drainage and flood control as well as provide structural and/or nonstructural Best Management Practices for the control of storm water quality, as required by the ASDDTC and Colorado Department of Public Health and Environment (CDPHE).

3. The storm water management system in each subdivision shall be designed to integrate with required outdoor common areas, designated parkland and open space areas, green space, and landscaped areas as described in Section 146-4.7.6 (Site Design for Low Impact Development – (LID)), to promote the use of natural systems to manage storm water, and to reduce the cost of construction and maintenance of pipes, culverts, and other hard infrastructure, to the maximum extent practicable.

4. Drainage outfalls shall be consolidated so that they may be served by area-wide or regional ponds or storm water treatment facilities to the maximum extent practicable.

1. In the event that the street construction standards of this UDO require an applicant to construct all or part of a street along property that is not part of the subdivision application (for example, along property that separates the applicant's land from a street to which a connection is required), the City will use its best efforts to assist the applicant to recover that portion of the street construction costs that represent an unearned benefit conferred upon other landowners, under the following conditions:

2. In the event that the City constructs all or part of a street along property that has not contributed to the construction of such street, the City shall have the same authority to attempt to collect reimbursement as it would have if the street had been constructed by a private party, and shall be authorized to retain any amounts collected to reimburse itself for street construction costs incurred. However, the City shall not be required to attempt to obtain reimbursement if, in the opinion of the City Engineer, it would be inequitable, impracticable, or not in the City's best interests to do so.

1. When any subdivider constructs or installs an extension of a water transmission line, sewer interceptor line, street, or other public improvement through intervening undeveloped property to serve the subdivider's property, the entire cost of the improvement shall be the responsibility of such subdivider.

2. The City Council is authorized to enter into agreements to reimburse any subdivider that constructs or installs a public improvement through intervening undeveloped property. Such reimbursement shall be made solely from funds collected from the owner or owners of each parcel of land that abuts the improvement at the time such parcel develops within the City. The amount of the reimbursement to be paid shall not exceed the original cost of the improvement, plus reasonable interest, as agreed to by the City and the subdivider. To defray the costs of administering the reimbursement agreement, the City shall withhold a fee not to exceed 2½ percent of the amount of the reimbursement.

3. The City's obligation to reimburse shall be subject to the creation of an Improvement Reimbursement District, the development of the intervening property, the collection of funds from the owner or owners of such property, and the appropriation of such funds by the City Council. The term of each such reimbursement agreement shall be within the sole discretion of the City Council and, in any event, shall not exceed 20 years.

4. Each subdivider that enters into a reimbursement agreement with the City shall submit a written application to the City, on a form approved by the City, for the creation of an Improvement Reimbursement District. Such application shall be in a form approved by the City Manager and shall include, at a minimum, the following information:

5. Within 60 calendar days after receiving the subdivider's completed application regarding the creation of an Improvement Reimbursement District and the assessment of public improvement costs, intervening undeveloped properties shall be noticed and processed in compliance with the procedures in Sections 146-5.3.7 (Notice) and 146-5.3.8 (Public Hearings).

6. At the conclusion of the public hearing, the City Council may adopt an ordinance approving, conditionally approving, or denying the creation of an Improvement Reimbursement District and the assessment of public improvement costs to intervening undeveloped properties.

7. The City shall record a notice of a reimbursement obligation with the clerk and recorder of the county in which the property so obligated is located. The notice shall include a provision stating that at the time of development of the property, the City shall require the owner to pay the assessment for the described improvements at the time of issuance of a building permit.

8. In the event that the City extends public improvements, the City is authorized to receive reimbursement from intervening undeveloped properties that abut such improvements; provided that the City has followed the public hearing process consistent with the requirements of Article 146-5 (Zoning and Subdivision Procedures).

9. The City may deduct from funds collected any costs or expenses that the City has incurred in repairing, correcting, or improving any defect that the subdivider who constructed or installed such improvement failed to correct during the applicable warranty period.

10. A building permit shall not be issued for the construction of any structure on the abutting, intervening property until payment of the assessment per foot of property frontage is received by the City.

11. Nothing in this Section shall be deemed to relieve any owner of property located within an Improvement Reimbursement District of any obligation imposed upon such owner by virtue of a valid annexation agreement with the City. (Ord. No. 2019-49 § 1, 08-19-2019)

1. Integrated into and throughout the development;

2. Connected with one another and with such land in adjacent development to the maximum extent practicable;

3. Connected by trails to pedestrian routes on adjacent lands and to regional and City trail systems. Open space that is anticipated to serve as a greenway and trail corridor shall be continuous with anticipated greenway and trail corridors on adjacent properties to the maximum extent practicable; and

4. Planned, designed and constructed in compliance with the standards and specifications established by this UDO, including without limitation Sections 146-4.3 (Subdivision Standards), Section 146-5.4.2 (Subdivision of Land), the Aurora City Code, and adopted regulations including all standards and requirements set forth in the Parks, Recreation and Open Space Dedication and Development Criteria Manual. (Ord. No. 2019-49 § 1, 08-19-2019)

1. Location. Sites designated or dedicated for schools shall meet the following location standards to the maximum extent practicable:

2. Amount Required.

3. Other Permitted Uses of Land. If land is dedicated to the City for school purposes, and is later determined by the City to be unnecessary for school purposes, the City may put the land to use for other public facilities required to provide other public services or facilities to the residents of the development for which the land was dedicated at a level roughly proportional to those received by other residents of the City, to the extent authorized by the constitution or laws of the federal government or the State of Colorado, including without limitation the powers granted to home rule municipalities in Article XX of the Colorado constitution.

4. Cash-in-lieu of Land Dedication. At the discretion of the school district and upon mutual agreement, which cannot be unreasonably withheld by school district or City, cash-in-lieu of land may be required. Land value will be based on fair market value of zoned land with infrastructure in place as determined by an MAI (Member of the Appraisal Institute) appraisal. Cash-in-lieu payment shall be based on an appraisal that is no more than six months old and shall be made at the time of recording of the first plat.

1. Requirement. Public land shall be dedicated to provide for parks and open space to serve the future residents of the development, and address the impacts of additional residents within existing neighborhoods. The dedication of such land shall be as required by an annexation agreement, if one has been approved for the property. If land uses change from those approved at the time of annexation or no annexation agreement exists for the subdivision, park land dedication shall be required as set forth in the Parks, Recreation and Open Space Dedication and Development Criteria Manual.

2. Dedication Timing. The dedication of land for parks and open space purposes shall occur, by plat or separate document at the discretion of the City, at the time that the first plat for property adjacent to such land is submitted to the City.

3. Land Dedication Standards. The amount of land dedicated for parks and open space purposes shall comply with the methodology, population-based standards, housing unit types, average household sizes, and other criteria, such as cash-in-lieu, as set forth in the Parks, Recreation and Open Space Dedication and Development Criteria Manual.

4. Cash-in-Lieu of Land Dedication. Developments unable to provide the required land dedication per the standards set forth in the Parks, Recreation and Open Space Dedication and Development Criteria Manual shall be required to pay a cash-in-lieu of land dedication fee. The timing of any required cash-in-lieu of land dedication payments, land value calculations and payment tracking are set forth in the Parks, Recreation and Open Space Dedication and Development Criteria Manual.

5. Dedication and Development Criteria Manual. Park and open space land dedication, development and design criteria, which govern the eligibility of land and areas to receive land dedication credit, shall be as set forth in the Parks, Recreation and Open Space Dedication and Development Criteria Manual.

1. Within 20 feet of a Protected Lot in Subarea A, or

2. Within 25 feet of a Protected Lot in Subareas B or C.

1. The required primary building setback from that lot line on the Protected Lot; or

2. 20 feet.

1. Unless an alternative through-traffic system is described in an approved Master Plan, or the Aurora Transportation Master Plan, each subdivision in Subareas B and C containing one section (640 acres) of contiguous land or more shall reserve or dedicate an arterial street right-of-way along each section line, and shall reserve or dedicate at least one collector street right-of-way to provide a continuous north-south through connection between the east-west section line street alignments, and at least one collector street right-of-way to provide a continuous east-west through connection between the north-south section line street alignments. See Figure 4.5-1.

2. Unless an alternative through-traffic system is described in an approved Master Plan, then in addition to the requirement in Subsection 1 above, each subdivision in Subareas B and C containing one quarter-section (160 acres) of contiguous land or more shall reserve or dedicate at least one collector street right-of-way to provide a continuous north-south through connection between each east-west collector street alignment required by Subsection 1 above, and shall reserve or dedicate at least one collector street right-of-way to provide a continuous east-west through connection between each north-south collector street alignment required by Subsection 1 above. See Figure 4.5-1.

1. In addition to the requirement of Subsections 1 and 2 above, each subdivision in Subarea B and C shall organize all local streets so that each lot may be accessed by travelling over no more than two (2) local streets after departing from the grid of arterial, collector, and collector streets required by Subsections 1 and 2 above.

2. All street types shall align across major arterials unless the Planning Director and Director of Public Works determine that an alternative alignment will increase pedestrian, bicycle, or automobile safety or reduce traffic congestion. For example, a collector street proposed in a new subdivision shall align across an existing or proposed arterial street with an existing or proposed collector street to form a continuous street network. Stub streets shall match and connect to other streets on the opposite side of the arterial to the maximum extent practicable.

1. Unless the Planning Director and Director of Public Works determine that an alternative alignment will increase pedestrian, bicycle, or automobile safety or reduce traffic congestion, or that topographic or geological conditions make the connection impracticable, where adjacent land has been subdivided with stub streets ending adjacent to a new subdivision, or with a local street ending at a street dividing the new subdivision from the old subdivision, the new subdivision streets shall be designed to align the streets in the adjacent subdivision to allow future through circulation between the two adjacent subdivisions.

2. Where adjacent land has not been platted, subdivisions shall be designed so that at least one local street is constructed as a stub street intended as a future through connection to the adjacent parcel within each one-quarter mile of boundary length.

1. Vehicle Access. Access to Mixed-Use and Special Purpose district lots located on arterial streets shall provide site access meeting the requirements of Table 4.5-1 below, as illustrated in Figure 4.5-3 below.

EXAMPLE

GUIDELINE A – To the maximum extent practicable, combine access points for adjoining properties in order to minimize curb cuts and traffic impacts on adjoining streets. GUIDELINE B – Provide internal, direct vehicular connections between adjoining properties to reduce traffic impacts on adjoining streets. Align vehicular connections to the maximum extent practicable. A joint access agreement may be needed. GUIDELINE C – Provide internal pedestrian connections that link adjoining properties and create an internal pedestrian circulation system within large development sites. GUIDELINE D – Provide multiple pedestrian connections that link into existing or planned citywide open space and trail networks.

Figure 4.5-3. Mixed-Use and Special Districts Access and Connectivity

2. Vehicle Connectivity. Internal streets or driveways shall be made between multiple buildings and parking areas on a single lot or development to break up large parcels into smaller, internal “blocks”, and to avoid the need to use public boundary streets to move between different buildings or areas of the development site. Such connections shall:

1. In Master Plans that include primarily industrial uses, the street layout shall generally align with the arterial and collector street system to the maximum extent practicable. Shared internal roadways and defined truck routes that avoid conflicts with primarily residential and commercial use areas shall be included to the maximum extent practicable.

2. Where an I-1, I-2, or AD zone district occurs along an arterial street frontage and residential use areas are located across the arterial street, entries serving the I-1 or I-2 district shall be placed out of alignment with residential use area entries to keep heavy commercial traffic out of residential neighborhoods.

3. No curb cut sized or designed for site access into an I-1, I-2, or AD zone district by a semi-truck tractor and/or trailer, or for site access by a commercial vehicle, trailer, or bus exceeding 6,000 pounds empty weight, shall be permitted on streets that separate R-1 or R-2 Residential zone districts from the I-1, I-2 or AD zone district.

4. In I-1, I-2, and AD zone districts, access and circulation shall be designed so that loading docks and loading dock door are internally oriented and are shared with adjacent industrial development in order to consolidate and minimize street access points, to the maximum extent practicable.

1. Vehicle Access in General. Access from arterial streets into a residential development shall meet the requirements of Table 4.5-2 below.

2. Single-Family Residential Access Through Private Streets.

3. Individual Residential Driveways. Individual driveways from public streets to single-family detached or two-family residential dwelling shall comply with the standards of Section 146-4.6.5.C (Single-Family Detached and Two-Family Lots).

1. Intent. These standards require that safe and convenient pedestrian access be provided to points within a development and to nearby uses and amenities to encourage walking and reduce the frequency and number of automobile trips.

2. Mixed-Use and Multifamily Districts. Each lot shall provide the following pedestrian connections, as applicable:

a. Required Connections are shown in Table 4.5-3.

Table 4.5-3 Required Pedestrian Connections

Table 4.5-3 Required Pedestrian Connections
From Main Entry to Public Sidewalk – Provide a safe, convenient, and accessible pedestrian connection from the main entrance of a building to a public sidewalk or internal walkway that connects to a public sidewalk.
To Adjoining Streets – Provide pedestrian connections between internal and perimeter sidewalks at a maximum of 1,320 feet along the perimeter street (i.e. pedestrians along the perimeter sidewalks shall be able to find a sidewalk connection into the internal sidewalk system without walking more than 1,320 feet along the perimeter of such a site.)
Between Multiple Buildings on a Site – All developments containing more than one building shall provide walkways between the principal entrances of buildings.
To Adjacent Development – Sidewalks and walkways serving a site shall align and connect with any sidewalks on adjacent properties that extend to the boundary of such properties. Multiple pedestrian connections between adjacent developments shall be provided to the maximum extent practicable.

b. Standards for Connections. Standards for connections are shown in Table 4.5-4.

Table 4.5-4 Pedestrian Crossing Options

Table 4.5-4 Pedestrian Crossing Options
Change in Paving Materials
Change in Paving Color

i. Walkways shall be a minimum of six feet wide and include lighting at a height of 12 feet or less spaced no further than of 50 feet on center.

ii. Mixed-use and multifamily lots within one-quarter mile of a light rail transit station shall include a direct pedestrian connection to the station, to the maximum extent practicable, or if that is not practicable, to a public sidewalk leading to the station. Signage directing pedestrians to the nearest transit station shall be provided on-site.

iii. When a lot in a Mixed-Use district abuts public open space that includes existing or planned trails, a direct pedestrian connection at least six feet wide from the development to the existing or planned trail shall be provided.

iv. At each point where a sidewalk must cross a parking lot, internal street or driveway to make a required connection, it shall be clearly marked by using one of the methods shown in Table 4.5-3.

1. All “places of public accommodation,” as defined in the federal Americans with Disabilities Act (42 U.S.C. 12101 et seq.) shall comply with the requirements of that Act concerning on-site circulation and access.

2. Accessible routes shall be provided from public transportation stops, accessible parking and accessible passenger loading zones and public sidewalks to 60 percent of the accessible building entrances they serve.

3. All development shall comply with handicapped accessibility requirements based on the version of the International Building Code, Chapter 11, and the International Code Council (ICC) A117.1-2009, or any future update of that document adopted by the City. (Ord. No. 2019-49 § 1, 08-19-2019)

1. Any expansion of the gross floor area of an existing land use or structure by more than 25 percent in Subarea A, or by more than 15 percent in Subareas B and C, shall provide additional parking for the expansion areas, including accessible parking, as required by Table 4.6-1.

2. Additional parking may be required for increases in required parking of less than 25 percent in Subarea A or less than 15 percent in Subareas B and C if the Planning Director determines that the expansion is likely to create a significant increase in on-street parking in any surrounding residential neighborhood.

1. Any change of a permitted or approved conditional use that results in an increase in required parking of more than 25 percent in Subarea A, or by more than 15 percent in Subareas B and C, shall provide additional parking, including accessible parking, as required in Table 4.6-1.

2. Additional parking may be required for increases in required parking of less than 25 percent in Subarea A or less than 15 percent in Subareas B and C if the Planning Director determines that the change of use is likely to create a significant increase in on-street parking in any surrounding residential neighborhood.

3. The provisions of Subsection C.1 shall not apply to any change of use in a multi-tenant commercial, mixed-use, or industrial building larger than 50,000 square feet in gross floor area unless the Planning Director determines that the change of use is likely to create a significant increase in on-street parking in any surrounding residential neighborhood.

1. Demand. When calculating the required parking spaces in this Section results in a fractional parking space, the fraction shall be rounded up to the nearest whole number.

2. Supply.

1. No parking area shall be used for the sale, storage, repair, dismantling, or servicing of any vehicles, equipment, materials, or supplies.

2. Parking of any vehicle on lawn areas in front or side yards, on areas set aside for landscaping, or on any other area not surfaced for off-street parking as provided in this UDO is prohibited.

3. The following vehicles shall not be parked or stored in a Residential zone district, unless the vehicle is being used to render services such as deliveries, pickups, or construction activity to property within 200 feet of where the vehicle is parked:

4. Travel trailers, tent trailers, pick-up campers or coaches, and motorized dwellings or vans shall not be used as a dwelling unit or for the conduct of business unless they are located in a Manufactured Home Park or Recreational Vehicle Park.

1. Parking maximums apply to surface parking lots, not to spaces provided in parking garages.

2. Except for development in the MU-TOD zone district, additional parking up to 20 percent over the maximum parking requirement may be approved by the Planning Director if the Director determines that additional surface parking may be necessary due to unusual site or use characteristics, and provided that the additional parking area is paved with an approved alternative surfacing material meeting the requirements of Section 146-4.6.5.D.7.

1. Bicycle Parking Spaces Required.

2. Design. Bicycle parking facilities shall:

1. The minimum number of off-street parking spaces required for new development or redevelopment may be reduced if the proposed development or redevelopment is located within one-quarter mile, measured by the most direct walking route, of any Regional Transportation District (RTD), or other publicly authorized transit agency transit stop as follows:

2. No development approved with this parking reduction shall be considered nonconforming parking or shall be subject to the requirements of Section 146-5.5.5 (Nonconforming Site Feature), for not meeting minimum parking requirements if the bus or transit line is later relocated, or if peak service frequency falls below the peak frequency requirements in Subsection 1 above, and the remaining number of parking spaces provided for that use does not meet the minimum requirements of Section 146-4.6.3.C (Minimum Required Parking).

3. This reduction is not available for multifamily dwellings.

Where two or more uses listed in Table 3.2-1 (Permitted Use Table) share a parking lot or structure, the total off-street parking requirement for those uses may be reduced by the factors shown in Table 4.6-3, below.

To calculate the shared parking reduction, add the requirements for each use category, then divide the sum by the factor indicated in FTable 4.6-3

1. Compressed work week schedules;

2. Flexible arrival and departure times;

3. Telework opportunities; or

4. Incentives for employees to use alternative modes of transportation to the workplace. (Ord. No. 2020-37 § 17, 10-05-2020; Ord. No. 2019-49 § 1, 08-19-2019)

1. Generally.

2. In Subarea A. The following standards shall apply in Subarea A, unless Subsection 4 below applies, in which case the provisions of Subsection 4 shall be applied.

3. In Subareas B and C. The following standards shall apply in Subareas B and C, unless Subsection 4 below applies, in which case the provisions of Subsection 4 shall be applied.

4. Multifamily and Single-Family Attached Dwellings.

1. No Back-out Parking. Except for single-family and two-family uses, parking areas shall be designed so that vehicles are not permitted to back out of the parking area onto a public street.

2. Access Points.

1. Applicability and Exceptions. Where vehicle access to single-family detached or two-family residential dwelling structures is provided by individual driveways, those driveways shall meet the standards in this Section 146-4.6.5.C, with the following exceptions.

2. Front Yard Restrictions.

3. Side Yard Restrictions. No driveway or parking surface located in the side yard shall exceed a width of 10 feet.

4. Rear Yard Restrictions.

5. Surfacing.

6. Garage Required. In Subareas B and C, single-family detached and two-family dwellings shall include a garage structure large enough to fully enclose at least one off-street parking space per dwelling on the same lot as the residential structure.

7. Garage Design. In all Subareas, if a garage is provided, the garage structure may be attached or detached from the main dwelling, and shall meet the following standards:

8. Garage Variation Required.

a. In single-family detached residential subdivisions that contain four lots or more in Subareas B and C, and that are not using the Subarea C Small Residential Lot Standards from Section 146-4.2.3.A, the following standards shall be met:

i. At least 50 percent of the total number of lots in the subdivision or block shall have recessed garage configurations, alternate-load garage configurations, or any combination of either.

ii. A recessed garage configuration is a home design having all its street-facing garage doors recessed at least five feet behind the home's front building line as shown in Figure 4.6-2. A front building line shall be a home's most forward nongarage wall plane at least10 feet wide. It may include the front line of a front porch, provided the porch has a roof and is at least five feet deep and eight feet in width.

iii. For the purposes of this Section 146-4.6.5.C.8, an alternate-load garage configuration shall be defined as a home design having garage doors facing in a direction other than the street on which the home fronts, as shown in Figure 4.6-3. Where used as an alternate-load design, a side-load garage shall have at least one garage door oriented perpendicular to the front elevation of the house with the enclosed portion of the garage on the front elevation comprising a maximum of 60 percent of the total front elevation width.

iv. House lots with alternate-load garages shall be permitted a reduced minimum front building setback of 15 feet for all portions of the building, including the garage, except that every dwelling shall maintain a minimum of 20 feet from the garage door to the back of the sidewalk, or to the back of the curb if no sidewalk is present. Alley-load garages shall be set back a minimum of three feet from the alley right-of-way. Lots with alternative-load garages shall be exempted from the driveway area restrictions of this UDO. All garage configurations shall avoid layouts where parking on the driveway will overhang sidewalks or public rights-of-way.

9. Garage Doors as a Percentage of Front Façades. In all Subareas, where a garage door or doors accommodating one or two cars in non-tandem configuration appear on the front of a residential structure, the door or doors shall not occupy more than 47 percent of the total width of the front elevation. For garages built to accommodate three or more vehicles in non-tandem configuration, the garage doors shall not occupy more than 55 percent of the total width of the front elevation. All three-car garages shall have a minimum two foot offset between the single and double garage doors, or between two single doors if three single doors are provided.

1. Landscaping and Screening. All surface parking lots shall comply with the landscaping and screening standards applicable to parking lots in Section 146-4.7.5.K (Parking Lot Landscaping).

2. Pedestrian Walkways. In parking lots containing more than 150 contiguous spaces, sidewalks or paths at least six feet in width and designated by painted lines, raised surfaces, or different surfacing colors or materials shall be provided within a landscaped median to provide safe pedestrian access from the farthest parking block, row, or bay to the primary entrance of each building the parking area serves.

3. Parking Blocks. Each parking lot containing more than 150 spaces shall divide the parking area into “parking blocks”, each containing no more than 120 vehicle parking spaces to the maximum extent practicable in light of the shape and orientation of the parking lot and the location of access points to the parking lot. Each parking block shall be separated from other parking blocks by a driving aisle with a center landscaped swale, median, or area at least 20 feet in width.

4. Tandem Parking.

5. Overhangs.

6. Stall Size and Drive Aisle Dimensions.

7. Surfacing.

8. Marking of Spaces.

1. Design. Above ground parking garages or portions of structures occupied by automobile parking shall meet the following standards:

h. In all Subareas, the ground floor of a parking structure shall employ one or more of the options shown in Table 4.6-5, below to improve visual interest of the ground floor façade. Parking structures without ground-floor active uses shall comply with required landscaping per Section 146-4.7.5.J.2.d.

Table 4.6-5 Parking Structure Screening Methods

Table 4.6-5 Parking Structure Screening Methods
Storefront with Active Use – Often referred to as a “wrap”, this includes locating an active use such as, but not limited to, retail, restaurant, office, residential, commercial, or civic space between the parking structure and public space.
Public Art – Using public art, such as a mural or sculptural element integrated into the façade.
Display Cases – Display cases could be used to display retail goods, art, banners, and more.
Landscape Wall – Incorporating green landscaping into the façade of a parking structure at the ground floor also provides interest. This can be done with vines, vertical gardens, or other living plant material.

2. Pedestrian and Vehicular Circulation.

1. Any use with less than 15,000 square feet of gross floor area.

2. Any lot in Subarea A.

3. Any use within the MU-FB, MU-TOD, and MU-R districts or the MU-OA-MS subdistrict.

1. Location.

2. Maneuvering. In Subareas B and C, loading areas shall be designated to provide for truck backing and maneuvering on-site and not from or within the public rights-of-way.

3. Screening. Service and loading areas visible from a Residential zone district or a public right-of-way shall be screened pursuant to Section 146-4.7 (Landscape, Water Conservation, Storm water Management). (Ord. No. 2019-49 § 1, 08-19-2019)

1. Vehicle stacking spaces shall be a minimum of 8.5 feet in width and 19 feet in length.

2. Required vehicle stacking spaces shall not interfere with access to parking spaces. They may be located anywhere on the site provided that multi-modal traffic impacts on- and off-site are minimized and the location does not create negative impacts on adjacent properties due to noise, light, or other factors.

3. Electronic devices such as loudspeakers, automobile service order devices, and similar instruments shall not be audible beyond the property line with any adjacent Residential district.

4. Customers in vehicles shall only be served through service windows or order stations located on the rear of the building or on a side of the building not adjacent to a street frontage.

5. In the MU-TOD Edge subdistrict and the MU-OA-G subdistrict, no drive-through lane or vehicle stacking area may extend between the front of the building and the front lot line.

6. Drive-up or drive-through accessory facilities shall be designed to meet all applicable standards in Sections 146-3.3.6.E (Drive-Up or Drive-Through Facility) and 146-4.4 (Neighborhood Protection Standards). (Ord. No. 2019-49 § 1, 08-19-2019)

1. All development on vacant land or cleared land;

2. All new development of residential, mixed-use, and non-residential primary structures;

3. Redevelopment of a site that involves replacement of an existing structure or expansion of the gross floor area by more than 25 percent.

4. Construction of new parking lots containing 10 or more parking spaces, and the redesign or reconfiguration of existing primary use parking lots containing 10 or more parking spaces.

1. Final grading;

2. Installation of main irrigation system components;

3. Installation of plant beds, including edging, weed barrier, and mulch, without plant materials; and

4. Completion of sedimentation and soil erosion best management practices including placement of soil erosion materials on areas to be sodded or seeded. Types of materials include roof leader extensions, straw wattles, hay bales, and soil erosion blankets. (Ord. No. 2019-49 § 1, 08-19-2019)

1. General. Landscaping for all development shall include a variety of Water-wise plant materials, such as trees, shrubs, ornamental grasses, groundcovers, annual and perennial flowering species, turf grasses, and mulches that will provide visual interest during all seasons.

2. Minimum Plant Sizes. Plant material shall be installed in the minimum sizes shown in Table 4.7-1. Trees shall be measured six inches above ground level for all trees up to four inches in caliper and 12 inches above ground level for larger trees.

3. Tree and Shrub Diversity. Tree and shrub diversity shall comply with the Landscape Reference Manual to the maximum extent practicable.

4. Prohibited Plant Species.

5. Living Material Requirements.

6. Plant Quality and Installation. All plant materials shall meet or exceed minimum standards as outlined by the Colorado Nursery Act Regulations and the current edition of the Uniform Nursery Standards, and shall be installed according to specifications of the Associated Landscape Contractors of Colorado.

7. Tree and Shrub Equivalents.

8. Plant Beds.

9. Thorny Plants and Shrubs. Shrubs that have thorns shall not be planted within 8’ of public walks or within parking lot islands. Trees that drop fruits or have thorns shall not be planted within 20 feet of public walks or within parking lot islands or medians.

10. Clear Space Above Walks. Trees planted adjacent to public sidewalks shall maintain an eight foot or greater tree branching height above the walks when mature.

11. Artificial Turf Standards. Where this UDO permits the use of artificial turf, it shall comply with the following standards.

12. Turf Regulations. The design of all new turf areas shall comply with the following requirements:

1. New landscaped areas, plant beds, raised planters, and plant containers, with the exception of non-irrigated native, dryland, and restorative grasses shall be watered by a permanent automatic irrigation system meeting all adopted Aurora Water engineering standards, which may be found on the City’s website.

2. Automatic rain shutoff sensors shall be installed in all irrigation systems.

3. The Aurora Water Department requires all non-single-family landscapes to be divided into water conserving (non-turf), nonwater conserving (turf), and non-irrigated areas (e.g., pavement). A separate hydrozone plan is required for submittal with the landscape plan. Refer to the Landscape Reference Manual for plan requirements. (Ord. No. 2023-41 § 4, 09-11-2023; Ord. No. 2023-29 § 1, 07-31-2023; Ord. No. 2020-37 § 18, 10-05-2020; Ord. No. 2019-49 § 1, 08-19-2019)

1. Curbside Landscape, See Section 146-4.7.5.C

2. Street Frontage Landscape Buffers, See Section 146-4.7.5.D

3. Parking Lot Landscaping - Exterior, See Section 146-4.7.5.K.

4. Parking Lot Landscaping - Interior, See Section 146-4.7.5.K

5. Building Perimeter Landscaping, See Section 146-4.7.5.J

6. Non-Street Perimeter Buffers, See Section 146-4.7.5.E

7. Detention Pond and Water Quality Ponds, See Section 146-4.7.5.M.

1. General.