1. Residential development may occur pursuant to the optional provisions of Section 146-4.2.3.A (Subarea C Small Residential Lot Standards) or other provisions in Section 146-4.2.3 applicable to particular land uses or forms of development. If the Small Residential Lot option is selected or other provisions of Section 146-4.2.3 apply, those provisions shall supersede any inconsistent standards in Article 146-3 and Article 146-4.

2. Portions of the land may be developed as mixed-use centers in accordance with the standards applicable to the MU-N zone district or the MU-C zone district pursuant to the procedures in Sections 146-5.4.3.I (Administrative Activity Center Designation). (Ord. No. 2019-49 § 1, 08-19-2019)

1. Residential development may occur pursuant to the optional provisions of Section 146-4.2.3.A (Subarea C Small Residential Lot Standards) or other provisions in Section 146-4.2.3 applicable to particular land uses or forms of development. If the Small Residential Lot option is selected or other provisions of Section 146-4.2.3 apply, those provisions shall supersede any inconsistent standards in Article 146-3, and Article 146-4.

2. Portions of the land may be developed as mixed-use centers in accordance with the standards applicable to the MU-N zone district or the MU-C zone district pursuant to the procedures in Sections 146-5.4.3.I (Administrative Activity Center Designation). (Ord. No. 2019-49 § 1, 08-19-2019)

1. Installation. All Tiny House Dwellings shall have wheels removed, shall be installed on a permanent foundation, and shall be connected to City water, sewer, and electric utilities before occupancy for a period of more than 30 consecutive days.

2. Minimum Area Per Dwelling Unit.

3. Landscaping.

4. Detention Ponds. Any required detention and retention ponds shall be integrated into the site design and shall meet the requirements of the Aurora Storm Drainage Design and Technical Criteria and the Aurora Roadway Design and Construction Specifications Manual (which addresses retaining walls for detention ponds).

5. Street Standards.

6. Pedestrian Linkages. Convenient, safe pedestrian path networks at least five feet wide shall be provided from dwelling units to recreation areas, bus stops, parking areas, commercial uses, nearby schools, and any public facility. All access shall conform to City standards.

7. Refuse Disposal. Trash dumpsters and recycling bins in each R-MH district shall be located at convenient locations throughout the site and screened by a minimum six-foot-high enclosure, accessible by gate.

8. Recreational Vehicle Parking Requirements.

9. Exterior Lighting. Exterior lighting shall be provided and located to emphasize entrances, exits, and any barriers, and shall comply with Section 146-4.9 (Exterior Lighting). (Ord. No. 2019-49 § 1, 08-19-2019)

1. For MU-N districts mapped after the Effective Date of the UDO in Subareas B and C, a conditional use approval shall be required for any primary or accessory use operating between the hours of 10:00 midnight and 6:00 a.m.

2. In Subarea C, no MU-N may be located abutting the E-470 right-of-way.

3. Each MU-N district shall contain the following elements:

4. All development and redevelopment that includes a residential use component shall dedicate land on-site for neighborhood park purposes in accordance with the standards of Section 146-4.3.18.B (Park and Open Space Lands and Cash-in-Lieu) and the dedication and design criteria set forth in the Parks, Recreation and Open Space Dedication and Development Criteria Manual. A cash-in-lieu payment may not be used to satisfy the neighborhood park land dedication requirement in its entirety.

5. A conceptual illustration of a possible layout of an MU-N zone district is shown below.

1. Each individual MU-OI district mapped after the Effective Date in Subareas B and C, and containing more than two acres of land, shall contain a public plaza or outdoor meeting area clearly visible from an adjacent street.

2. All development and redevelopment that includes a residential use component shall dedicate land on-site for neighborhood park purposes in accordance with the standards of Section 146-4.3.18.B (Park and Open Space Lands and Cash-in-Lieu) and the dedication and design criteria set forth in the Parks, Recreation and Open Space Dedication and Development Criteria Manual. A cash-in-lieu payment may not be used to satisfy the neighborhood park land dedication requirement in its entirety. (Ord. No. 2019-49 § 1, 08-19-2019)

1. All development and redevelopment that includes residential uses shall dedicate land on-site for neighborhood park purposes in accordance with the standards of Section 146-4.3.18.B (Park and Open Space Lands and Cash-in-Lieu) and the dedication and design criteria set forth in the Parks, Recreation and Open Space Dedication and Development Criteria Manual. A cash-in-lieu payment may not be used to satisfy the neighborhood park land dedication requirement in its entirety.

2. Additional Standards for Subarea C. In Subarea C, the following elements shall be incorporated into each development, unless the element is already included in an adjacent development in the same MU-C zone district and residents and patrons of the proposed development will have convenient and efficient access to those elements:

3. A conceptual Illustration of a possible layout of an MU-C zone district is shown below.

1. The MU-OA zone district is divided into the following five subdistricts.

2. Each subdistrict is subject to different development standards.

1. Original Aurora Low Density Residential – MU-OA-R1. The Original Aurora Low Density Residential subdistrict shall promote and protect residential neighborhoods and improve the overall image and character of Original Aurora. The building form standards and permitted uses work together to promote desirable residential areas. These regulations shall reinforce the existing development patterns while also encouraging reinvestment and new types of housing.

2. Original Aurora Medium Density Residential – MU-OA-R2. The Original Aurora Medium Density Residential subdistrict shall promote active and pedestrian-oriented areas that have a mix of residential and small, neighborhood-scale commercial uses. The subdistrict shall permit a broad range of housing types that are compatible in scale with existing single-family homes while providing diverse housing choices for households of different ages, sizes and incomes.

3. Original Aurora Residential Mixed-Use – MU-OA-RMU. The Original Aurora Residential Mixed-Use subdistrict shall promote active and pedestrian-oriented areas that have a mix of high-density residential uses with the option for neighborhood-scale commercial uses on the ground floor of multifamily buildings. The subdistrict shall permit a broad range of moderate- to high-density housing types that provide a diversity of choices for households of different age, size and income.

4. Original Aurora Main Street – MU-OA-MS. The Original Aurora Main Street subdistrict shall promote safe, active, pedestrian-scale and diverse areas through the use of building forms that clearly define and activate the public realm. Development that engages the pedestrian is encouraged and will enhance the character of this mixed-use district. The subdistrict shall enhance the convenience, ease, and enjoyment of transit, walking, shopping and public gathering within the neighborhood and shall reflect its historic character.

5. Original Aurora General – MU-OA-G. The Original Aurora General subdistrict shall promote an urban, mixed-use environment along key corridors and retail streets within the neighborhood that contains entertainment, commercial, office and residential uses. The subdistrict supports attractive architectural design and promotes pedestrian activities while also allowing for higher density, vertical development that takes advantage of the significant mountain views.

1. Corner Commercial Use. Where Article 146-3 (Use Regulations) permits an art studio or workshop, office, personal service, restaurant, or retail use to be located in the MU-OA-R2 or MU-OA-RMU subdistricts at the corner of two streets, the commercial use shall comply with the following additional standards.

2. Ground Floor Commercial Use. Where Article 146-3 (Use Regulations) permits an accessory art studio or workshop, office, personal service, restaurant, or retail use to be located in the MU-OA-RMU subdistrict on the ground floor of existing or proposed multifamily buildings, the commercial use shall comply with the following additional standards.

1. General Purpose of Development Standards. The general purpose of the MU-OA district development standards is to ensure that buildings will reinforce the character of, and avoid creating adverse impacts on, surrounding developments and streets, and will create a cohesive visual identity and attractive street frontage; ensure that site design promotes efficient pedestrian, bicycle and vehicle circulation patterns and creates a high-quality street and sidewalk environment; ensure that buildings are oriented to and reinforce the intended character of the abutting roadways, allowing for easy pedestrian access to buildings and providing well-defined edges to the roadway environment; provide opportunities for uses that enliven and enrich the roadway, bicycle and pedestrian environment, such as outdoor dining, porches, patios, and landscape features; and ensure that large sites are developed in a manner that supports and encourages connectivity and create a cohesive visual identity and streetscape with common open spaces.

2. Permitted Building Types, Building Envelopes, and Lot Requirements. All new lots created and new structures constructed after the Effective Date shall comply with the standards set forth in Table 2.4-8 and Section 146-4.2 (Dimensional Standards), unless otherwise noted.

3. Landscape Buffer Standards.

4. Streetscape Standards.

5. Public Realm Design Standards.

6. Connectivity.

7. Access.

8. Outdoor Space Standards.

1. Purpose. The purpose of these building design standards is to strengthen Original Aurora’s unique identity; create buildings with appropriate human scale and ensure that buildings contribute to the creation of a pedestrian-friendly environment through the provision of glazing, shading, and shelter at the pedestrian level; encourage the use of high quality materials that promote overall building longevity; provide visual interest that promotes a distinct architectural character; and encourage durable and well-designed residential developments with access to parks and open space that add to the quality of the neighborhood.

2. Commercial and Mixed-Use Building Design Standards. The following standards apply to all buildings constructed after the Effective Date in which the primary use is commercial or mixed-use development.

3. Residential Building Design Standards. The following standards apply to all buildings constructed after the Effective Date in which the primary use is residential.

1. Purpose. The purpose of these MU-OA district parking standards is to regulate the placement, use and design of parking lots and garages; provide well-defined circulation routes for vehicles, bicycles and pedestrians within parking areas; ensure that accommodations for motor vehicles enriches and support the pedestrian and bicycle environment; avoid parking congestion on neighborhood streets; and prevent residential streetscapes from being dominated by protruding garage doors, and to allow the active, visually interesting features of the house to dominate the streetscape.

2. Parking Design Standards. The following standards apply to all parking areas and garages constructed after the Effective Date.

1. Applicability.

2. Purpose. The purpose of these adaptive reuse standards is to encourage and facilitate the reuse of existing buildings that are underutilized or underperforming by modifying site development standards that would otherwise make the reuse or existing buildings, structures and sites impracticable. Enhancements to the exterior of an adaptive reuse building should focus on elements that improve ground floor design of the building. Ground floor designs should support a pedestrian-friendly environment, define the main entry, provide visual interest and enhance the public realm.

3. Setbacks. Any additions or façade changes involving greater than 25 continuous linear feet of exterior wall facing a public right-of-way shall comply with zoning setbacks.

4. Height. The heights of buildings existing on the Effective Date shall be exempt from building height limits established by this Section 146-2.4.4 or Section 146-4.2 (Dimensional Standards). The addition of parapets or roof structures, equipment or other enclosures or non-habitable space is allowed. Any new or additional habitable spaces or floors shall comply with the height limits established by this Section 146-2.4.4 for the MU-OA subdistrict where the property is located.

5. Design Standards. When an adaptive reuse project includes the alteration, reconstruction or remodeling of the exterior walls or façades of a building, the design standards in Section 146-2.4.4.H.2 shall apply to the façades being altered or reconstructed to the maximum extent practicable.

6. Access and Infrastructure.

7. Landscaping.

8. Parking.

9. Process.

1. A maximum of 25 percent of the lot frontage along arterial street frontages may include parking lot frontage.

2. A maximum of 25 percent of the lot may be devoted to automobile parking lots or garages.

3. All parking areas and service drives within 80 feet of property lines along public streets shall be screened by a three-foot high masonry wall or a continuous landscape hedge.

4. Carports (i.e., parking shelters that are unenclosed on one or more sides) are prohibited.

1. No parking spaces or truck loading areas shall be allowed within the areas.

2. Buildings may intrude into these areas to within 20 feet of the edge of the property line.

3. Areas not covered by buildings shall be landscaped and/or include a pedestrian gathering area with paving that differs in texture or color from standard concrete paving and amenities such as artwork, fountains, or other special features.

4. Fire lanes may intrude into these areas to within 40 feet of the edge of the property line.

1. All new multifamily residential developments shall incorporate an outdoor gathering area, which shall count towards total outdoor common area requirements.

2. All development and redevelopment that includes residential uses shall dedicate land on-site for neighborhood park purposes in accordance with the standards of Section 146-4.3.18.B (Park and Open Space Lands and Cash-in-Lieu) and the dedication and design criteria set forth in the Parks, Recreation and Open Space Dedication and Development Criteria Manual. A cash-in-lieu payment may not be used to satisfy the neighborhood park land dedication requirement in its entirety.

1. Sample Materials and Colors. The Planning Director shall maintain samples of approved "primary" building surface materials and colors that may be used on all structures, which shall include brick, traditional or artificial stucco, and integrally colored decorative concrete or clay masonry units. In addition, the Planning Director shall maintain samples of approved "accent" materials, which shall consist of panelized materials, ceramic tile, and awning fabric.

2. Minimum Requirements for Approved Materials.

3. Accent Materials. All structures shall incorporate "accent" materials into all façades visible from a public right-of-way. Such accent materials shall be used for between five and 10 percent of a building's total façade area facing a public street. "Primary" materials may also be used as accents when placed in such a way as to provide a strong contrast in color or texture against the surrounding wall.

1. Residential.

2. Non-Residential.

3. Hotels.

1. Awning materials and colors shall be from the approved "accent" materials.

2. Internally backlighted awnings are prohibited.

3. Awnings may be lit with downcast architectural lighting fixtures.

1. Core Subdistrict. This subdistrict is adjacent to the rail station or other high capacity transit service station, and generally extends no more than one-quarter mile from the station. It includes high intensity businesses and high density residential uses. The variety of uses is often greater than the other subdistricts, and may include civic and entertainment uses. Ground Floor Commercial Uses will occur along most street frontages.

2. Edge Subdistrict. This subdistrict lies between, and creates a transition in building height, development density, and range of uses between the Core subdistrict and the adjacent non-TOD developments and neighborhoods. This subdistrict contains mixed-use development, but is primarily characterized by residential uses.

1. To create smaller blocks and frequent pedestrian connections, blocks shall be between 300 feet and 500 feet in length, and no more than 1,800 feet around the perimeter.

2. Streets shall align with and with connect with streets in adjacent non-TOD areas unless the Planning Director and the Director of Public Works jointly determine that the connection is impracticable or a threat to public safety.

3. Streets shall conform to the urban street standards in Aurora City Code Section 126-36.5.

4. Bicycle transportation shall be integrated into the development and the street cross-sections as required by the latest adopted Aurora Roadway Design and Construction Specifications Manual.

5. Main streets shall be designed as attractive public areas with quality streetscaping, provision of space for sidewalk cafés, and with sidewalk widths that comply with the latest adopted Aurora Roadway Design and Construction Specifications Manual.

6. Public spaces shall be designed to promote social interaction, leisure opportunities, public gathering and activities, and/ or to create focal points and activity nodes within development, shall incorporate seating areas and shaded areas.

7. All development and redevelopment that includes residential uses shall dedicate land on-site for neighborhood park purposes in accordance with the standards of Section 146-4.3.18.B (Park and Open Space Lands and Cash-in-Lieu) and the dedication and design criteria set forth in the Parks, Recreation and Open Space Dedication and Development Criteria Manual. A cash-in-lieu payment may not be used to satisfy the neighborhood park land dedication requirement in its entirety.

8. Along all public streets, all utility boxes and above-ground utility installations other than street and pedestrian light poles, traffic safety signals, and fire hydrants shall comply with the following standards to the maximum extent practicable and consistent with their function:

1. Each primary building shall have a principal entrance that faces a street or a street corner.

2. Each façade of a primary building that abuts a public green space, park, square, plaza, or promenade, shall include a pedestrian entry onto that public space to the maximum extent practicable.

3. In the Core Subdistrict, each building façade facing a street shall incorporate storefronts, walkways, arcades, galleries, or plazas to encourage street activity.

4. In the Core Subdistrict, each building façade that faces a street shall have at least 60 percent of its ground floor wall areas between three and eight feet above grade occupied by windows or non-opaque materials.

5. In the Core Subdistrict, wall openings on building façades facing a street will be square or vertical in proportion

6. At least 50 percent of each building façade facing a street shall be located between the street property line and the maximum front setback requirement in Subsection E above.

7. On corner lots that do not have alley access, the requirement in Subsection G.1 above may be reduced as necessary to allow safe vehicle access for loading areas and for servicing the building along the secondary street frontage.

8. In the Core Subdistrict, any portion of a surface parking within 50 feet of a street frontage shall have the view of parked automobiles screened by installing a brick or masonry wall between two and one half and three feet in height between the parking lot and the street.

9. In the Core Subdistrict, ground floor areas facing streets shall be designed with a minimum height of 13 feet to accommodate retail or other uses generating pedestrian traffic.

10. In the Core Subdistrict, at least 50 percent of each building façade facing a street, park, plaza, or other public space (not including areas occupied by doors or windows), shall be faced in brick, stone, cultured stone, real stucco, or other material of equivalent visual attractiveness, quality and durability as determined by the Planning Director.

1. Each development with a project valuation of $100,000 or more (except an Affordable Housing Structure) is required to provide public art. A public art plan shall be submitted along with the Master Plan or the first Site Plan for the development, whichever occurs first. The public art plan shall provide for the acquisition of outdoor works of art in compliance with the rules and regulations promulgated by the Director of Library and Cultural Services.

2. This public art requirement in this Subsection J supersedes the Title 32 District contribution requirements in other adopted City statutes or regulations. All other standards under the City's Title 32 District public art requirement apply within an MU-TOD.

3. The minimum amount to be spent on required public art is one percent of the total project construction cost included in any building permit application, except that the total amount to be spent by property owners who are registered non-profit corporations or on projects that are recipients of Aurora Urban Renewal Authority incentives shall be one-half of one percent (0.5 percent) of total project construction cost.

4. In addition, each development in which a Title 32 District is required to provide public art under this Section 146-2.4.6.K shall provide funds to maintain the required public art in the amount of 25 percent of the minimum amount to be spent on the art under Subsection 3 above.

5. The public art requirement shall not apply to any development where a district service plan or an intergovernmental agreement with the City obligates the property owner(s) to provide for public art in other ways or amounts. (Ord. No. 2019-49 § 1, 08-19-2019)

1. A larger scale of development that presents a recognizable skyline or silhouette, and a visible transition in building massing and concentration from a visible focal point;

2. A safe and pleasant pedestrian and bicycle environment connected to the streets and walkways;

3. Nodes for multi-modal movement, including mass transit facilities; and

4. A pleasant visual environment with high-quality architectural materials, properly sized and positioned signage, and intensive landscaping with generous outdoor common areas.

1. The standards in Subsections E through M below apply to all initial development in an MU-R district in Subareas B or C begun after the Effective Date of this UDO.

2. Each development or redevelopment in an MU-R district in Subarea B or C approved or constructed before the Effective Date of this UDO with any of features or elements identified in Subsections E through M below shall continue to include them during any subsequent redevelopment of the property.

3. The requirements of Subsections E (Required Elements), F (Street Network and Pedestrian Circulation), and G (Location of Certain Land Uses) below apply to each MU-R development as a whole, and not to each lot within an MU-R district.

1. An identified focal point that serves as the center of the area with the highest development density or the most intense activity in the MU-R zone district. If the property abuts the E-470 right-of-way, the focal point shall include a distinctively designed building or feature that is visible from E-470 and that is immediately adjacent to the walkable main street element. The focal point shall be connected to the main street and may be located within a high visibility site. The tallest buildings and the buildings with the highest development density within the MU-R zone district shall be located on focal point sites, which shall include all the land within 660 feet of the focal point, and which may also (at the applicant’s option) include any additional land located within 660 feet of the main street.

2. At least one public plaza or outdoor meeting area at the intersection of each arterial street with another arterial street or with a collector street, which includes a corner design element with architectural or urban design features, and which contains at least 600 square feet of plaza or meeting area.

3. At least two of the uses identified in Table 3.2-1 (Permitted Use Table).

4. At least one Walkable Main Street (which may but does not have to accommodate automobile traffic) that connects the MU-R district to one of the adjacent arterial or local streets;

5. At least 40 percent of the street frontage of each development parcel fronting on the Walkable Main Street shall be bordered by plazas or buildings with façades located no more than 15 feet from the sidewalk;

6. There shall be direct pedestrian, bicycle, and automobile access (without the need to travel along an arterial street) from the interior of the MU-R district to a local street.

7. If the property is adjacent to E-470, it shall include identified high visibility sites defined as a single row of building sites located between the E-470 right-of-way and a boundary road that generally parallels the alignment of E-470 (and also turns to parallel the alignment of I-70 at the E-470/I-70 interchange) and terminates other streets running toward E-470. The boundary road shall be located at least 300 feet from the E-470 right-of-way to define a single row of building sites located between the boundary road and E-470, which are referred to as high visibility sites. In the case of a regional shopping center or other regional use containing at least 1,000,000 square feet of gross floor area, the boundary road may (at the applicant’s option) be a frontage road located closer than 300 feet to the E-470 or I-70 rights-of-way. When the boundary road is designed as a frontage road, the areas between the boundary road and the E-470 and I-70 rights-of-way shall meet the parking lot perimeter landscaping requirements of Section 146-4.7.5.K(5).

1. Street Networks. Each MU-R district shall include a street network of arterial, collector, and local streets meeting all street spacing and layout requirements of the Aurora Roadway Design and Construction Specifications Manual. Those regulations generally call for:

2. Pedestrian Circulation.

3. Specific Sites.

1. Uses in the Vehicle-Related Operations category in Table 3.2-1 shall not be permitted on Focal Point sites, on lots fronting the Walkable Main Street, or on High Visibility Sites.

2. Drive-up and drive-through uses shall not be permitted on Walkable Main Street sites or High Visibility sites.

1. Standards Applicable to All Development in Subarea C. At least 25 percent of the land area within each non-residential development site (except Walkable Main Street sites) shall be outdoor common area, which shall be located and landscaped to connect with adjacent public spaces.

2. Standards Applicable to Walkable Main Street Sites.

3. Public Spaces for Dedication to the City.

1. Standards Applicable to High Visibility Sites. No more than 50 percent of the E-470 frontage shall be occupied by surface parking except where such parking would not be visible from E-470 due to terrain or pre-existing vegetation.

2. Standards Applicable to Walkable Main Street Sites.

1. Buildings shall use height and massing to emphasize important corners, designate points of entry, and create a visible skyline to differentiate the MU-R zone districts as more significant activity nodes than surrounding areas.

2. Where property is located within 500 feet of the E-470 right-of-way, sites shall be designed to preserve views from the MU-R zone district to E-470 and views from E-470 into the MU-R zone district.

3. Taller buildings shall be located near Focal Points to the maximum extent practicable to reinforce the importance of the MU-R intersections when viewed from a distance along I-70, I-225, or E-470

1. High Visibility Sites. Buildings shall be oriented so that major primary pedestrian entries face the Boundary Street, but the façade facing E-470 shall be finished with the same mix of materials and colors and the same degree of fenestration and articulation used on the major entry walls facing the Boundary Street.

2. Focal Point Sites. Buildings on Focal Point sites shall be oriented so that primary pedestrian entries face the Walkable Main Street, but any façade facing an arterial or collector street shall be finished with the same mix of materials and colors and the same degree of fenestration and articulation used on the major entry walls facing the Walkable Main Street.

3. Walkable Main Street Sites. Buildings adjacent to the Walkable Main Street shall be oriented so that primary pedestrian entries face that street.

1. Standards Applicable to All Development. Within each MU-R district, each building taller than 50 feet and each building larger than 100,000 square feet shall include at least one common architectural element that visually links such buildings to each other and distinguishes the MU-R from other MU-R areas when viewed from I-70, I-225, or E-470. The common architectural element shall be chosen by the developer of the first building required to contain that element, at the time of such development. Common architectural elements may include building materials of a distinctive color, common lighting features to accent building cornices or rooflines, common roof shapes, or other elements readily visible and distinguishable by motorists traveling E-470 or other major highways.

2. Standards Applicable to Walkable Main Street Sites. Where a primary structure fronts on a Walkable Main Street, the following additional design requirements shall apply:

1. High Visibility Sites. On High Visibility Sites, buildings over 100 feet in height shall use lighting to emphasize the height of the building. While floodlighting is permitted, other less intensive forms of lighting are preferred. Such lighting shall be projected onto building faces from a position above the first floor to avoid creating glare at ground level.

2. Main Street Sites. Lighting fixtures on the Walkable Main Street shall include pedestrian lighting that complies with the Aurora Roadway Design and Construction Specifications Manual.

1. Green Court Development. All standards in UDO Section 146-4.2.3 apply except: (a) no more than 10 percent of the gross land area included in any Master Plan shall permit the Green Court Dwelling Use; (b) the minimum width of green courts in this zone district shall be 40 feet and a variable width Green Court open space must have the minimum width of 40 feet for at least 75 percent of its length with no portion of the remainder less than 25 feet in width. (Ord. No. 2022-17 § 2, 04-25-2022; Ord. No. 2020-37 § 4, 10-05-2020; Ord. No. 2019-49 § 1, 08-19-2019)

1. Amount of Residential Development Limited. After the Effective Date, no more than 50 percent of the gross land area included in any Master Plan shall permit Household Living Uses or Group Living Uses listed in Table 3.2-1, and no more than 50 percent of the gross land area in residential use in any Master Plan may be developed with single-family detached dwellings.

2. Flexible Development Options. All land in the MU-A zone district in Subarea C shall comply with the permitted and conditional uses as shown in the Use Regulations in Article 146-3 and shall comply with the dimensional standards applicable to the MU-A zone district shown in Section 146-4.2 (Dimensional Standards), except that:

1. Clear Zone.

2. Accident Potential Zones I and II (APZ I, APZ II).

b. Development Standards. The following development standards shall be used as criteria for evaluating Site Plans in any APZ I or APZ II zone district.

i. APZ I-N(North) Lot Coverage. The maximum lot coverage of structures and buildings within APZ I-N shall be as permitted by the graph in Figure 2.5-1.

ii. APZ I-S(South) Lot Coverage. The maximum lot coverage of structures and buildings within APZ I-S shall be as permitted by the graph in Figure 2.5-2.

iii. APZ II-N(North) Lot Coverage. The maximum lot coverage of structures and buildings within APZ II-N shall be as permitted by the graph in Figure 2.5-3.

iv. APZ II-S(South) Lot Coverage. The maximum lot coverage of structures and buildings within APZ II-S shall be as permitted by the graph in Figure 2.5-4.

Figure 2.5-1: APZ I-N	Figure 2.5-2: APZ I-S
Figure 2.5-3: APZ II-N	Figure 2.5-4: APZ II-S

v. Crash Corridor. To the maximum extent practicable, the centerline area of the APZ I shall be maintained in an open condition. Structures and human activity, as permitted by this district, shall be placed toward the perimeter of the APZ area.

vi. Emissions. The development shall not:

(a) Release into the air any substance that would impair visibility or otherwise interfere with the operation of the aircraft;

(b) Produce substantial light emissions, either direct or indirect (reflective) that would interfere with pilot vision; or

(c) Produce emissions that would interfere with aircraft communication systems or navigational equipment.

vii. Hazardous Materials. Materials that are explosive, flammable, toxic, corrosive, or otherwise exhibit hazardous characteristics as defined in state regulations are prohibited in any quantity, except that sale or storage of small caliber ammunition is permitted.

viii. Other Prohibitions.

(a) The development shall not:

(i) Have more than 50 residents, users, or visitors per acre on a regular basis, or otherwise violate standards for levels of human occupancy established by the Air Force;

(ii) Involve utilities and services required for area-wide population upon which disruption would have an adverse impact (telephone, gas, etc.);

(iii) Concentrate people who are limited in their ability to respond to emergency situations such as children, elderly, the handicapped; or

(iv) Pose hazards to aircraft operations.

(b) After the Effective Date, no application for a subdivision of land that would increase the number of developable lots or increase the number of residents or users of the property shall be approved. (Ord. No. 2019-49 § 1, 08-19-2019)

1. City, state and federal lands managed for purposes of providing recreation opportunities or conserving land in its natural state;

2. Lands owned by a quasi-municipal body, such as a Title 32 District, or other publicly minded entity like a homeowners’ association or business owners’ association, for purposes of managing public access to recreational facilities and park and open space areas;

3. Lands credited toward satisfaction of park and open space land dedication requirements of the City; and

4. Lands identified in approved development plans to be used for contemporary park and open space purposes to comply with zoning and development regulations in effect at the time of plan approval.

1. Permanent structures are permitted with conditional use approval on privately-owned land in the POS district.

2. All activities in the areas designated as APZ I N, APZ II N, CZ N, APZ I S, APZ II S, or CZ S below, and described in more detail in Section 146-2.5.2.D, are subject to those standards limiting lot coverage and the number or concentrations of residents, user, or visitors applicable in the APZ zone district, including but not limited to those standards in Sections 146-2.5.2.D.2.b.

1. There are certain areas within the City that are subject to high aviation noise levels and possible crash hazards generated by aviation activities that endanger the lives and property of occupants of land in the vicinity of four airports:

2. Airport districts are created in and around these airports for the following purposes:

1. Federal Aviation Administration Surfaces. All development in the –AIO overlay district shall comply with any and all height restrictions in the underlying zone, together with the Federal Aviation Administration’s 14 CFR Part 77 navigable airspace standards and procedures for determining and avoiding obstructions and eliminating hazards to air navigation.

2. Avigation Easement. If the property is located within the Airport Influence District surrounding any airport, an avigation easement with the City and the associated airport, as joint grantee shall be conveyed to the City and the associated airport by any person subdividing lands or initiating construction of any structure on already subdivided lands within the Airport Influence District. Such avigation easement shall be an easement for right-of-way for unobstructed passage of aircraft above the property and shall waive any right or cause of action against the City or the associated airport arising from noise, vibrations, fumes, dust, fuel particles, and other effects caused by aircraft and airport operations. The avigation easement shall be in a form approved by the City and shall be recorded in the office of Clerk and Recorder for the county where the property is located before permit or plat approval is granted.

3. Notices.

1. 65 LDN Subarea

2. 60 LDN Subarea

3. 55 LDN Subarea

1. In accordance with the City of Aurora Charter, lands granted to or purchased for use and used by the City for park purposes shall not be sold or conveyed without a majority vote of the registered electors at a special or regular municipal election.

2. Notwithstanding other provisions of this UDO, park master plans approved by the park master planning process set forth in the Parks, Recreation and Open Space Dedication and Development Criteria Manual, as amended, shall limit and control the issuance and validity of all building permits and occupancy permits and shall restrict and limit construction, location, use and operation of all land and structures included within those parks.

3. For public works related projects, including but not limited to street, drainageway and utility infrastructure improvements, such development within -CPO lands shall be permitted only if consistent with the intent and spirit of the park master plan after considering and implementing all feasible avoidance and mitigation measures to minimize adverse impacts. If a recorded conservation easement applies to the park, all development shall be compatible with the restrictions and protections afforded by the easement. (Ord. No. 2019-49 § 1, 08-19-2019)

1. Notwithstanding other provisions of this UDO, –NAO areas shall be restricted to only development and uses prescribed within conservation easements, master plans, resource management plans and other approved planning and design documents that have been approved by the Parks, Recreation and Open Space Department.

2. For public works related projects, including but not limited to street, drainageway and utility infrastructure improvements, such development within natural areas shall be permitted only if does not violate applicable conservation easement protections and if it is consistent with the intent and spirit of the master plan or resource management plan after considering and implementing all feasible avoidance and mitigation measures to minimize adverse impacts. (Ord. No. 2019-49 § 1, 08-19-2019)

1. Preserve, protect, enhance, regulate, and use buildings, structures, sites, and areas that are reminders of past eras, events, and persons important in local, state, or national history that are landmarks in the history of architecture or that provide significant examples of architectural styles of the past.

2. Preserve, protect, enhance, regulate, and use buildings, structures, sites, and areas that are unique or irreplaceable assets to the City and its neighborhoods, that provide examples of the physical surroundings in which past generations lived, or that are archaeologically significant for present and future generations.

3. Enhance property values through the stabilization of neighborhoods and areas of the City, increase economic and financial benefits to the City and its inhabitants, and promote tourist trades and interests.

4. Develop and maintain the appropriate environment for such buildings, structures, sites, and areas, reflecting varied architectural styles and distinguished phases of the City's history and prehistory.

5. Stimulate an enhancement of human life by developing educational and cultural dimensions, provide for spiritual as well as physical needs by fostering knowledge of the City's heritage, and cultivate civic pride in the accomplishments of the past.

6. Empower the Historic Preservation Commission in its administration and enforcement of the City's historic preservation management program.

7. Cooperate with state and federal historic preservation efforts as defined by the bylaws, policies, and procedures of the commission.

1. Procedures for Historic Preservation Commission recommendations for City designation of a landmark, landmark site, or historic district are in Section 146-5.4.1.D (Historic Designation or Loss of Designation).

2. As of January 1, 2026, only those areas or properties within the City in the National Register of Historic Places that are construed to be local historic landmark or landmark site designations will continue to remain local historic landmarks regardless of the status in the National Register of Historic Places. Areas and properties in the National Register of Historic Places and also construed as a local landmark shall follow federal preservation laws and regulations.

3. Procedures for development applications for landmarks and landmark sites and within historic districts are in Section 146-5.4.3.D (Historic Landmark/District Development Application). (Ord. No. 2025-101 § 1, 11-03-2025; Ord. No. 2019-49 § 1, 08-19-2019)

1. The "High Point Park Mountain View Preservation Overlay District" designates panoramic view preservation areas. This map shall be kept on file and available for public inspection at the office of the Planning Department. The provisions of this Section are in addition to the provisions of the underlying zone districts. Where the provisions of this Section conflict with those of the underlying zone district, this Section shall control.

2. No part of any structure within the panoramic view preservation area shall exceed the mean elevation above sea level indicated on the overlay district map. Whenever a structure lies partially within a designated view panoramic preservation area, only that part of the structure that lies within the preservation area shall be subject to these provisions. All tree plantings in areas within the view panoramic preservation district shall conform to the landscaping standards prescribed by the Planning Department, to protect the panoramic views from encroachment. (Ord. No. 2019-49 § 1, 08-19-2019)

1. Encourage high-quality street edges by requiring a flexible schedule of improvements proportionate to the level of development proposed on properties abutting Havana Street.

2. Provide landscape and streetscape options that respond flexibly to a variety of existing conditions on lots along the corridor.

3. Strive for consistency of appearance and materials so that the Havana Street Corridor builds a distinctive character over time.

4. Provide for readily identifiable amenities specific to Havana Street that are attractive and useful.

5. Enhance the appearance and safety of streets for pedestrians.

1. Generally. The -HSO district applies to all properties contiguous with either side of Havana Street between 6th Avenue and Dartmouth Avenue. All property development in the Havana Street Overlay District shall comply with adopted City ordinances or rules and regulations. The Havana Street Overlay District does not change requirements for site planning processes or remove the possibility of relief under Sections 146-5.4.4 (Flexibility and Relief Procedures). The -HSO district requirements set forth in this Section 146-2.6.7 supersede the general landscaping requirements of Section 146-4.7 (Landscape, Water Conservation, Storm water Management) where the provisions conflict.

2. Property Conditions and Trigger Mechanisms. In each of the property conditions, any one of the actions below will trigger Havana Street streetscape and landscape requirements:

3. Non-Triggering Actions. Actions that will not trigger Havana Street streetscape and landscape improvements are:

4. Exemptions from Improvements. If development changes for a property fully meet the criteria for a Minor Amendment in Section 146-5.3.15 (Amendments of Existing Approvals),that property is exempt from the requirement for street frontage and landscape improvements.

5. Landscape Requirements. The individual design standard and design guidelines in Section 146-2.6.7.C contain the landscape requirements for each of the three property conditions listed in this Section.

6. Place-Making Markers and Streetscape Elements.

1. The following Sections contain the following street edge elements, tailored to each of the three Conditions defined in Section 146-2.6.7.B.2 above:

2. Condition 1

Standard right-of-way streetscape and landscaping requirements for the -HSO district.

c. Design Guidelines.

i. Landscape Buffer Depth. The standard landscape buffer depth required may be reduced to a nine-foot minimum along Havana Street in response to the street widening projects done in the past.

ii. Streetscape and Landscape Buffer. The standard minimum depth is 29 feet as measured into the property from curb face including the curb-head, curbside landscape area, detached walk, and the minimum nine-foot landscape.

iii. Landscape Buffer with Exceptions. Buffer width may be less than nine feet when either a 2.5 foot high masonry wall or a 2.5 foot high continuous landscape hedge is provided. The minimum landscape buffer depth with one of these exceptions is five feet.

3. Condition 2. Properties with existing attached sidewalks. Streetscape and landscaping requirements for Havana Street frontage in properties with an existing attached sidewalk in the HSO district.

4. Condition 3

Properties where the existing building(s) are close to the street and have no parking or paved access between building(s) and right-of-way or street frontage property line.

1. Intent. Trees shall be used to define the street edge, frame views, define points of access, soften building architecture, define building entrances, direct attention to signage, and provide shade for benches and RTD stops. Flexibility in the placement of trees within the frontage area is one of the principles included in this Section.

2. Design Standards. All development that occurs along the Havana Street Overlay district street edges has a tree requirement regardless of the development option applied. Rules for tree usage are:

3. Design Guidelines. Alternatives to the design standards may include:

1. Intent. The following planting concept shall apply to all areas to be landscaped within the Havana Street Frontage Areas. The concept is representative of a repeatable sequence of plant placement beginning with taller plant material species that transitions to medium height species to low spreading species and back to medium height species and ending with taller species. Applicable plants may be found in the HSO district Plant List. This list has been organized by height and other growth and visual characteristics. See Figure 2.6-6 and Figure 2.6-7.

2. Design Standards. The landscape area depicted below in Figure 2.6-6 and Figure 2.6-7 may be within a buffer next to a sidewalk, next to a street or within a plant bed within a hard surfaced area.

3. Design Guidelines. Alternatives shall include street trees for Havana Street. The alternatives may include integrating a sign, bench, or RTD stop into the landscaping in lieu of one tree in the frontage requirement, and may be considered a variation of the planting sequence presented in Figure 2.6-6 and Figure 2.6-7.

1. Intent. The HSO District Design Manual contains the approved street furnishings and streetscape elements (kit of parts), the approved place making marker types and locations (place making marker program), and the plant species list for the HSO district (HSO Plant List). That manual has been adopted subject to updating and future amending by the Planning Director. The intent of this manual is to apply its contents so that common elements and design standards appear in improvements along the length of Havana Street within the district. These standards shall be used by the Planning Department for review and decision-making.

2. Design Standards. Streetscape items such as lighting poles and fixtures, benches, bus stops, trash receptacles, place-making markers, and other street furnishings shall be allowed with an administrative approval by the Planning Director, provided they are of the design established in publications or lists kept in the Planning Department ("kit of parts" or "place making marker program").

3. Approved Plant List. The Planning Department maintains the Havana Street Plant List approved for use in landscaping improvement within the HSO district. Only these species shall be used within the district.

4. Design Guidelines. Administrative approval of any proposed alternative to either the Havana Business Improvement District approved kit of parts, place making marker program, or the Havana Street Plant List shall be required. Administrative approval of proposed alternatives shall be obtained from the Planning Director and shall be granted if, in the exercise of sound discretion, the proposals are determined to forward the intent of the district. (Ord. No. 2019-49 § 1, 08-19-2019)

1. Uses shall be allowed only if approved by City Council in a Master Plan. The Master Plan shall specify in detail the permitted, conditional, and prohibited uses for the PD district. For convenience, uses may be described as those permitted or conditionally permitted in another base zone district listed in this UDO, with any exceptions listed.

2. Any use proposed to be allowed by a Master Plan shall only be approved if it conforms with the following:

3. Notwithstanding the provisions of any specific Master Plan, certain uses shall be conditional uses in any Planned Development zone district as follows:

4. The following uses shall be prohibited from all Planned Development districts: