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Lone Tree City Zoning Code

ARTICLE VII

SR Suburban Residential District SR-1—SR-M

Sec. 16-7-10.- Intent.

(a)

The purpose of this District is to provide areas for a variety of housing types, designed in a manner to create livable space in the urban setting that is protected from incompatible land uses and hazardous conditions, and buffered from commercial/industrial uses. Adequate facilities, such as roads, water and sanitation, fire protection, emergency service and public utilities shall be available to serve these areas. Growth should occur in a phased and contiguous manner to save on the costly, premature extension of basic infrastructure. The SR District is characterized by a variety of housing types within a range of affordability, including housing for the elderly, handicapped and other special populations, and other accessory uses which enhance the basic elements of a balanced residential area, such as schools, parks, playgrounds and neighborhood recreational facilities.

(b)

Development within this District should be designed to create neighborhoods in terms of scale and identity and as service units with adequate schools, parks and convenience retail; and with pedestrian, bicycle and automobile circulation that includes connections between neighborhoods and community facilities.

(c)

A licensed boarding house or rooming house may be operated in a zoned suburban residential area. The maximum number of occupants in a licensed boarding house or rooming house shall be limited to that number which will not produce excess automobiles, as determined by the Director.

(Ord. 22-02 Art. 4)

Sec. 16-7-20. - Principal uses.

On lots that conform to the minimum lot area, the following uses are allowed by right and are considered "principal uses:"

(1)

Group homes.

(2)

Family childcare homes.

(3)

Boarding house or rooming house, licensed, which does not produce excess automobiles.

(4)

Construction office, temporary (temporary structures standards are set out in Article XXII of this Chapter).

(5)

Library (site plan required per Article XXVII of this Chapter).

(6)

Open space/trails.

(7)

Park/playground.

(8)

Recreation facility, neighborhood (site plan required per Article XXVII of this Chapter).

(9)

Residential dwelling unit, the occupancy of which does not produce excess automobiles.

(10)

Residence:

a.

Principal — one (1) single-family dwelling per lot (excluding mobile home).

b.

Temporary (temporary structures standards are set out in Article XXII of this Chapter).

(11)

Sales office, temporary (temporary structures standards are set out in Article XXII of this Chapter).

(12)

School — public, kindergarten through 12th grade.

(13)

Utility service facility (site plan required per Article XXVII of this Chapter).

(Ord. 22-02 Art. 4)

Sec. 16-7-30. - Accessory uses.

The following shall be allowed only when a principal use has been established on the lot:

(1)

Accessory uses and buildings.

(2)

Garage, private, limited to a maximum size of one thousand (1,000) square feet.

(3)

Home occupation (home occupation standards are set out in Article XXIII of this Chapter).

(4)

Personal-care boarding.

(5)

Satellite receiving dish.

(6)

Water/wastewater treatment or water storage facility for private domestic use not exceeding five thousand (5,000) gallons.

(7)

Swimming pools. All swimming pools require building permits and may also require pool barriers (e.g. fencing) to meet applicable building codes, per the Building Division.

(Ord. 22-02 Art. 4)

Sec. 16-7-40. - Uses permitted by special review.

The following uses are permitted, upon the approval of the City Council, in accordance with Articles XXI and XXVII of this Chapter:

(1)

Boarding house or rooming house, licensed, the occupancy of which does produce excess automobiles.

(2)

Church/church school.

(3)

Club/private recreational use (country club).

(4)

Cultural facility.

(5)

Daycare center/preschool.

(6)

Fire station.

(7)

Golf course.

(8)

Nursing home or convalescent home or other extended-care facility.

(9)

Recreation facility, community.

(10)

Retirement home.

(11)

School (private), college or university, and related facilities.

(12)

Sheriff/police substation.

(13)

Utility, major facility.

(14)

Water/wastewater treatment and water storage for domestic use in excess of five thousand (5,000) gallons for public, private or multiple use.

(Ord. 22-02 Art. 4)

Sec. 16-7-50. - Maximum gross density.

The gross density shall not exceed six (6) dwellings/acre and may be less due to required infrastructure or dedication, or environmental constraints.

(Ord. 22-02 Art. 4)

Sec. 16-7-60. - Minimum lot area.

The minimum lot area is seven thousand (7,000) square feet. Calculation of the minimum lot area is exclusive of open space, City-dedicated land or rights-of-way.

(Ord. 22-02 Art. 4)

Sec. 16-7-70. - Land dedication.

A portion of the gross site area shall be dedicated to the City for public use, or cash in lieu of land shall be paid as required by Chapter 17 of this Code.

(Ord. 22-02 Art. 4)

Sec. 16-7-80. - Parking standards.

(a)

Parking standards are set out in Article XXVIII of this Chapter.

(b)

The minimum off-street parking spaces required are two (2) spaces per dwelling unit.

(c)

The outside, off-street parking of recreational vehicles and trailers, utility trailers or other similar vehicles in residential areas shall be allowed up to seventy-two (72) hours per month. The foregoing shall be allowed for an additional seventy-two (72) hours per month only by special permit issued by the Community Development Department.

(d)

In order to avoid the storage of vehicles in residential areas, the outside, off-street parking of unlicensed and/or inoperable vehicles is prohibited.

(Ord. 22-02 Art. 4)

Sec. 16-7-90. - Minimum setbacks.

The setback is measured from the lot line to the exterior wall of the structure horizontally and perpendicular to the lot line.

(1)

Abutting a street:

a.

Regional/major arterial: one hundred (100) feet.

b.

Minor arterial/collector/local: twenty-five (25) feet.

(2)

Side:

a.

Principal use: five (5) feet.

b.

Accessory use: five (5) feet.

(3)

Rear:

a.

Principal use: twenty (20) feet.

b.

Accessory use: five (5) feet.

(4)

From electrical transmission lines of 115 kV or greater: one hundred (100) feet from the closest edge of the easement to the structure.

(Ord. 22-02 Art. 4)

Sec. 16-7-100. - Encroachments.

(a)

A cornice, canopy, eave, fireplace, wing wall or similar architectural feature may extend three (3) feet into a required setback.

(b)

An open, unenclosed, uncovered deck/ porch at ground level may extend six (6) feet into a required setback, except for a side setback.

(c)

An open unenclosed, uncovered deck/porch greater than four (4) feet in height, above ground level may extend three (3) feet into a required setback, except for a side setback.

(d)

A building permit shall not be issued for any structure which is to be located within an easement unless written approval by the easement holders is provided.

(e)

Utility distribution lines and related equipment commonly located along property lines may be located within a required setback. A neighborhood substation or gas regulator/ meter station shall meet the required setbacks.

(Ord. 22-02 Art. 4)

Sec. 16-7-110. - Building height.

(a)

Maximum building height:

(1)

Principal building: thirty-five (35) feet.

(2)

Accessory building: ten (10) feet.

The maximum height of accessory structures may be increased to twenty (20) feet by the Director, where it is determined that off-site impacts can be mitigated. The maximum building height shall not apply to church spires, belfries, cupolas, domes not used for human occupancy, chimneys, skylights, ventilators, water tanks, silos, parapet walls, cornices without windows, antennas, utility poles and necessary mechanical appurtenances usually carried above the roof level.

(b)

The height of an antenna shall be no greater than its distance to the nearest lot line.

(c)

The maximum height of a roof-mounted church spire shall not exceed 1.62 times the height of the church. The church height shall be measured from the lowest walkout level of the church to the highest roof peak. The height of the roof-mounted spire shall be measured from the top of the spire to the finished floor of the lowest walkout level of the church. (See Article XXXVI, Definitions, for Building Height - Spire Height Calculation Diagram.)

(Ord. 22-02 Art. 4)

Sec. 16-7-120. - Common/public area standards.

All improvements proposed within common and public areas of residential zoning districts and subdistricts are subject to review and approval by the City. Common and public areas may include, but not be limited to, neighborhood entryway areas, drainage and landscaped areas, parks, trails and public gathering spaces. Said areas may be owned by the City, the homeowners' association, special district or other entity. Improvements may include, but not be limited to, landscaping, irrigation, signage, fencing, lighting and drainage, play equipment, shelters, and furniture.

(1)

Improvement approval procedure.

a.

Prior to submittal of required materials, the applicant shall meet with the Director to discuss the procedure and submittal requirements to ensure that the proposal is in keeping with the City regulations, policies and design standards.

b.

The Director shall determine whether the request may be approved administratively, or whether it will involve City Council approval, based on the size, scope and impacts associated with the project, as determined by the Director.

c.

The request will be approved, approved with conditions or denied based on whether the proposal is consistent with City regulations, policies and design standards.

(2)

Submittal requirements.

a.

Development application form (available from the Community Development Department).

b.

Application fee (as determined by the City).

c.

Written description of the request.

d.

Supporting plans and documents that adequately describe the request, which may include site plan, landscape plan, lighting plan, signage details, site distance analysis, equipment specifications and other materials as determined by the Director.

(Ord. 22-02 Art. 4)

Sec. 16-7-130. - Subzoning districts (SR-1 through SR-4).

The specific provisions of the following subzoning districts shall govern the provisions within Sections 16-7-10 through 16-7-120 above. If a particular element or issue is not addressed in the specific provisions for a subzone, the relevant provisions contained in Sections 16-7-10 through 16-7-120 above, and in the remainder of this Chapter, shall apply.

(Ord. 22-02 Art. 4)

Sec. 16-7-140. - Principal uses of SR-1 Subzoning District.

The following uses shall be allowed. The Director may determine other similar uses as appropriate in this subzoning district.

(1)

Accessory uses and buildings (as provided in Section 16-7-30).

(2)

Group homes.

(3)

Family childcare homes.

(4)

Boarding house or rooming house, licensed, which does not produce excess automobiles.

(5)

Guardhouse for ingress-egress security.

(6)

One (1) single-family dwelling per lot.

(7)

Parks, open space and trails.

(8)

Public school, library.

(9)

Recreational areas and facilities.

(Ord. 22-02 Art. 4)

Sec. 16-7-150. - Uses permitted by special review in SR-1 Subzoning District.

The following uses are permitted in the SR-1 Subzoning District, in accordance with Article XXI of this Chapter:

(1)

Daycare center/preschool.

(2)

Fire station.

(3)

Private schools, churches, church schools and other institutions of higher learning.

(4)

Public utilities, including electric transmission line (115 kV or greater), electric substations and gas regulator stations.

(5)

Water and sewer facilities, pump stations and associated uses.

(Ord. 22-02 Art. 4)

Sec. 16-7-160. - Development standards of SR-1 Subzoning District.

(a)

The minimum lot area shall be seven thousand five hundred (7,500) square feet.

(b)

Minimum setback from a street shall be twenty (20) feet if front-entry garage access is proposed. If side-entry garage access is proposed, or if the garage access is from another street or alley, the setback shall be a minimum of fifteen (15) feet.

(c)

Minimum rear setback shall be twenty (20) feet.

(d)

Minimum side setbacks shall be five (5) feet for interior side lot lines.

(Ord. 22-02 Art. 4)

Sec. 16-7-170. - Principal uses of SR-2 Subzoning District.

The following uses shall be allowed. The Director may determine other similar uses as appropriate in this subzoning district.

(1)

Accessory uses and buildings (as provided in Section 16-7-30).

(2)

Boarding house or rooming house, licensed, which does not produce excess automobiles.

(3)

Group homes.

(4)

Family childcare homes.

(5)

Guardhouse for ingress-egress security.

(6)

One (1) single-family dwelling per lot.

(7)

Parks, open space and trails.

(8)

Public school, library.

(9)

Recreational areas and facilities.

(10)

Temporary construction office or storage area.

(11)

Temporary sales office.

(Ord. 22-02 Art. 4)

Sec. 16-7-180. - Uses permitted by special review in SR-2 Subzoning District.

The following uses are permitted in the SR-2 Subzoning District, in accordance with Article XXI of this Chapter:

(1)

Daycare center/preschool.

(2)

Fire station.

(3)

Private schools, churches, church schools and other institutions of higher learning.

(4)

Public utilities, including electric transmission line (115 kV or greater), electric substations and gas regulator stations.

(5)

Water and sewer facilities, pump stations and associated uses.

(Ord. 22-02 Art. 4)

Sec. 16-7-190. - Development standards of SR-2 Subzoning District.

(a)

The minimum lot area shall be seven thousand five hundred (7,500) square feet.

(b)

Minimum setback from a street shall be twenty (20) feet if front-entry garage access is proposed. If side-entry garage access is proposed, or if the garage access is from another street, the setback shall be a minimum of fifteen (15) feet.

(c)

Minimum rear setback shall be fifteen (15) feet, excluding patios. Rear setback from South Yosemite Street or Lincoln Avenue shall be twenty-five (25) feet.

(d)

Minimum side setbacks shall be five (5) feet for interior side lot lines.

(Ord. 22-02 Art. 4)

Sec. 16-7-200. - Principal uses of SR-3 Subzoning District.

The following uses shall be allowed upon the approval of a Site Improvement Plan in accordance with Article XXVII of this Chapter. The Director may determine other similar uses as appropriate in this subzoning district.

(1)

Accessory uses and buildings (as provided in Section 16-7-30).

(2)

Boarding house or rooming house, licensed, which does not produce excess automobiles.

(3)

Group homes.

(4)

Family childcare homes.

(5)

Guardhouse for ingress-egress security.

(6)

Multi-family dwelling.

(7)

Parks, open space and trails.

(8)

Recreational areas and facilities.

(9)

Sales or leasing office.

(10)

Single-family dwelling (no Site Improvement Plan required).

(Ord. 22-02 Art. 4)

Sec. 16-7-210. - Uses permitted by special review in SR-3 Subzoning District.

The following uses are permitted in the SR-3 Subzoning District, in accordance with Article XXI of this Chapter:

(1)

Daycare center/preschool.

(2)

Emergency care centers, nursing and convalescent homes and other external care facilities, such as outpatient care centers and clinics.

(3)

Fire station.

(4)

Private schools, churches, church schools and other institutions of higher learning.

(5)

Public utilities, including electric transmission line (115 kV or greater), electric substations and gas regulator stations.

(6)

Water and sewer facilities, pump stations and associated uses.

(7)

Water recycling, heat exchange and geothermal uses associated with water use consumption within multi-family development.

(Ord. 22-02 Art. 4)

Sec. 16-7-220. - Development standards of SR-3 Subzoning District.

(a)

Development of single-family detached dwellings shall comply with the development standards set forth herein.

(b)

Setbacks.

(1)

General setback: A minimum of twenty (20) feet shall be required from project boundaries, and thirty (30) feet minimum shall be required from major streets.

(2)

Street setback: A minimum street setback of twenty (20) feet to the garage doors is required; otherwise, a minimum street setback of ten (10) feet to the side of the unit.

(3)

Side setback: No minimum side setback, except when adjacent to a private street; then ten (10) feet is required.

(4)

Distance between structures: A minimum distance of ten (10) feet is required between structures.

(c)

Minimum setbacks for multi-family units from all lot lines shall be fifteen (15) feet, except where adjacent to single-family detached residential dwelling; then the minimum setback shall be twenty-five (25) feet and along any arterial street, setbacks shall be thirty (30) feet.

(d)

The maximum building height shall not exceed fifty (50) feet measured in accordance with the City's duly adopted Building Code.

(e)

Within the SR-3 Subzoning District, a minimum of thirty percent (30%) of the gross site area shall be set aside and improved by the developer as landscaped open space.

(Ord. 22-02 Art. 4)

Sec. 16-7-230. - Principal uses of SR-4 Subzoning District.

The following uses shall be allowed upon the approval of a Site Improvement Plan in accordance with Article XXVII of this Chapter. The Director may determine other similar uses as appropriate in this subzoning district.

(1)

Accessory uses and buildings (as provided in Section 16-7-30).

(2)

Boarding house or rooming house, licensed, which does not produce excess automobiles.

(3)

Group homes.

(4)

Family childcare homes.

(5)

Guardhouse for ingress-egress security.

(6)

Multi-family dwelling.

(7)

Parks, open space and trails.

(8)

Recreational areas and facilities.

(9)

Sales or leasing office.

(10)

Single-family dwelling (no Site Improvement Plan required).

(Ord. 22-02 Art. 4)

Sec. 16-7-240. - Subzoning districts (SR-E - Estate; SR-L - Low-Density and SR-M - Moderate-Density) of SR-3.

The specific provisions of the subzoning districts shall control over the provisions within Sections 16-7-10 through 16-7-120. If a particular element or issue is not addressed in the specific provisions for a subzone, the relevant provisions contained in Sections 16-7-10 through 16-7-120 and in the remainder of this Chapter shall apply.

(Ord. 22-02 Art. 4)

Sec. 16-7-250. - Development standards of SR-4 Subzoning District.

(a)

Setbacks adjacent to SR-L District (rear lot) with intervening street:

(1)

Building: twenty-five (25) feet.

(2)

Landscape buffer: fifteen (15) feet.

(3)

Berming: three (3) feet (3:1 consisting of canopy and groundcover).

(b)

Setbacks adjacent to SR-L and SR-M Districts (facing lot):

(1)

Building: twenty-five (25) feet.

(2)

Landscape buffer: twenty (20) feet.

(Ord. 22-02 Art. 4)

Sec. 16-7-260. - Subzoning districts (SR-E - Estate, SR-L - Low-Density and SR-M - Moderate-Density) of SR-4.

The provisions of the subzoning districts as stated within each subzoning district shall apply, unless not addressed, then the provisions contained outside of the subzoning district shall apply.

(Ord. 22-02 Art. 4)

Sec. 16-7-270. - Principal uses of SR-E, SR-L and SR-M Subzoning Districts.

The following uses shall be allowed. The Director may determine other similar uses as appropriate in this subzoning district.

(1)

Accessory uses and buildings (as provided in Section 16-7-30).

(2)

Group homes.

(3)

Family childcare homes.

(4)

Boarding house or rooming house, licensed, which does not produce excess automobiles.

(5)

Guardhouse for ingress-egress security.

(6)

Open space, landscaping, trails.

(7)

Public and quasi-public buildings and structures.

(8)

Recreation areas, parks, recreation facilities, golf courses.

(9)

Single-family dwellings.

(10)

Temporary offices and sales center.

(Ord. 22-02 Art. 4)

Sec. 16-7-280. - Uses permitted by special review in SR-E, SR-L and SR-M Subzoning Districts.

The following uses are permitted in the SR-E, SR-L and SR-M Subzoning Districts, in accordance with Article XXI of this Chapter:

(1)

Information centers.

(2)

Nursing and convalescent homes and other extended care facilities.

(3)

Private schools, churches, church schools and related institutions.

(4)

Public or homeowners' association-owned buildings.

(5)

Public utilities, including electric transmission lines, substations and related facilities.

(6)

Water and sewer facilities, pump stations and associated uses.

(Ord. 22-02 Art. 4)

Sec. 16-7-290. - Development standards of SR-E, SR-L and SR-M Subzoning Districts.

(a)

Minimum lot:

(1)

SR-E: twelve thousand (12,000) square feet.

(2)

SR-L: ten thousand (10,000) square feet.

(3)

SR-M: six thousand five hundred (6,500) square feet.

(b)

Setbacks:

(1)

SR-E: twenty-five (25) feet front and rear; fifteen (15) feet side.*

(2)

SR-L: twenty-five (25) feet front and rear; fifteen (15) feet side.

(3)

SR-M: twenty (20) feet front and rear; ten (10) feet side.

* Note: The Heritage Estates development (SR-E) requires seven-foot side setbacks or twenty-eight (28) feet of minimum building separation.

(c)

Maximum building height, thirty-five (35) feet except for chimneys.

(Ord. 22-02 Art. 4)

Sec. 16-7-300. - Accessory buildings and uses in SR-E, SR-L and SR-M Subzoning Districts.

The following uses are permitted, subject to the applicable provisions of this Chapter:

(1)

Detached garages.

(2)

Home occupations.

(3)

Maintenance buildings.

(4)

Private swimming pools and private greenhouses. All swimming pools require building permits and may also require pool barriers (e.g. fencing) to meet applicable building codes, per the Building Division.

(5)

Storm shelters.

(6)

Tennis courts, barbecue pits, water features and fountains.

(Ord. 22-02 Art. 4)

Sec. 16-7-310. - Setbacks for accessory uses in SR-E, SR-L and SR-M Subzones.

Private uncovered swimming pools and tennis courts may project into any yard, provided that any such use is set back a minimum of five (5) feet from any property line and does not encroach into utility or drainage easements.

(Ord. 22-02 Art. 4)