17-7-9.12.3.5 Single family residential traditional lot subdivision standards

17-7-9.12.3.5 Single family residential traditional lot subdivision standards.

The following development standards apply to all single family residential traditional lot subdivisions in a residential land use area. These are traditional single family residential lots that do not require additional open space and common areas within the residential development.

A. Lot Standards and Minimum Area. The minimum lot area is three thousand five hundred square feet, subject to the following regulations:

1. Lot Width. The minimum lot width is forty-five feet, measured at the front setback line.

2. Lot Frontage. The minimum lot frontage is forty-five feet, unless the proposed lot is on the curve of a cul-de-sac, then the minimum lot frontage is thirty-five feet.

3. Lot Depth. The minimum lot depth is seventy-five feet, unless the proposed lot width is at least sixty-seven feet, then the minimum lot depth shall be sixty-seven feet. Corner lots must meet the minimum lot depth from both street frontages.

B. Setbacks. The minimum setbacks for primary structures in single family detached residential lot subdivisions are as follows:

1. Front. The minimum front yard setback is eighteen feet to a garage (not including a sidewalk width) and fifteen feet to living area.

a. Corner Lot Rule. Corner lots have two front yards.

b. Exceptions. The following exceptions apply to all front yard setbacks in the zone:

i. Front Porch. An open, front entry porch may encroach eight feet into the front yard setback.

ii. Projections. Skylights, sills, cornices, chimneys, flues, eaves and ornamental features may project into the front yard up to two and one-half feet.

iii. Impervious Surfaces. A driveway with a width of ten feet and a sidewalk of up to five feet in width from the driveway or street to the front door.

2. Side. The minimum side yard setback is five feet, subject to the following exceptions. Where side yards are adjacent to existing residential development, the side yard setback shall be a minimum of ten feet.

a. Projection. Sills, cornices, chimneys, flues, eaves and ornamental features may project into the side yard up to two and one-half feet. If the front porch wraps around the structure it may project into the side yard up to two feet.

b. Stairs and Balconies. Outside stairways and balconies may project into the side yard up to three feet.

3. Rear. The minimum rear yard setback is fifteen feet, subject to the following exceptions:

a. Corner Lot Rule. On a corner lot there is no rear yard.

b. Projection. Sills, cornices, chimneys, flues, eaves and ornamental features may project into the rear yard up to two and one-half feet.

c. Stairs and Balconies. Outside stairways and balconies may project into the rear yard up to three feet.

C. Building Orientation and Scale. Residential and accessory structures shall be oriented and scaled as follows:

1. Dwellings shall be serviced by a local street, an access road or drive, or an alley and shall not gain access from a collector or arterial street.

2. Individual lots, buildings and units shall be arranged and situated to relate to surrounding properties, to improve the view from buildings and to minimize road area.

3. Individual lots and buildings shall be designed to minimize pedestrian and automobile conflict while providing pedestrians direct access to a sidewalk or trail.

4. Massing should be divided into rhythmic blocks to bring the design of the unit much closer to the human scale and to create a pedestrian-friendly atmosphere.

5. Building design and orientation should consider exposure to sunlight to avoid energy inefficiencies.

D. Build-To Line. The front yard setback is the build-to line. At least fifty percent of the front elevation must be built within three feet of the build-to line. This provision does not apply to the development of cul-de-sac lots.

E. Height. The maximum height for a structure is twenty-eight feet to the midpoint for a sloping roof and twenty-five feet to the cornice for flat roofs.

F. Stories. All buildings must be from one to two and one-half stories.

G. Parking/Driveway Access. Each lot shall provide two parking spaces in a garage or in the side or rear yard of the property. Except for a ten-foot driveway from the frontage that leads to a garage or other parking area located on the side or to the rear of a dwelling, off-street parking and access to parking areas shall be located on the side or rear of a property.

H. Unoccupied Accessory Structure and External Accessory Dwelling Unit Standards. An unoccupied accessory structure or an external accessory dwelling unit shall meet the following development standards:

1. Proximity. An unoccupied accessory structure or an EADU must be located at least six feet from the main building.

2. Location. An unoccupied accessory structure or an EADU must be located in either the rear or side yard.

3. Setbacks. An unoccupied accessory structure or an EADU, including eaves, must be a minimum of two feet from the rear and side lot lines. All construction must be done in accordance with the building code.

4. Height. The height of an unoccupied accessory structure or an EADU may not exceed twenty feet to the midpoint for a sloped roof and sixteen feet to the cornice for a flat roof.

5. Stories. An unoccupied accessory structure or an EADU may range from one to one and one-half stories.

6. Building Area. The maximum cumulative building area of all unoccupied accessory structures and an EADU is the larger of nine hundred square feet or thirteen percent of the lot area.

7. Utilities. An unoccupied accessory structure or an EADU may not have a separate electrical service, gas service, sewer service or water service.

8. Maintenance. It is the responsibility of the property owner to ensure the setback area between an unoccupied accessory structure or an EADU and the property line remains free of weeds, junk and debris.

9. Number of Unoccupied Accessory Structures. Multiple unoccupied accessory structures are permitted on each property so long as each unoccupied accessory structure meets the requirements of this subsection.

I. Reserved.

1. Front Porches. Front porches shall be provided on all dwelling units, or as otherwise approved by the planning commission through specific design review. Porches shall be an unenclosed, roofed structure attached to the dwelling structure. Porches shall be defined by a railing, wall, columns or similar architectural features. Porches are encouraged to reflect the design of traditional porches found in older neighborhoods. Railings and porch supports shall be composed of relatively substantial members, preferably wood, metal and/or masonry or other materials that complement the design. Porches may encroach eight feet into the front yard setback and two feet into the side yard setback.

2. Garages. Detached garages must be located in the rear yard and may be connected to the dwelling unit with a covered breezeway, provided the breezeway is architecturally compatible with the dwelling.

a. Building/Retaining Walls. No more than three materials shall be used for the primary wall surfaces on a building. Exterior finish shall be of traditional, time- and weather-tested techniques. Retaining walls shall be of materials complementary to the building’s materials.

b. Colors. Without limiting the use of color, exterior walls shall be subdued in color and not reflective. Intense colors should be used as accent only.

c. Roofs. All the roofs and dormer roofs of a building shall be constructed of the same material. Slopes of roofs shall be of equal pitch if a gable or hip roof is employed. All metal roofs must be of a subdued color. Painted roof shingles are prohibited.

d. Openings. The following standards apply to openings of all structures:

i. Entry Doors. Entry doors must face the front yard or, if located on the building side, must be placed within three feet of the front facade. Entry doors must be covered by a roof and must be a primary element of the front of the structure.

ii. Windows. Bay windows shall have from three to five sides.

K. City-Wide Utility Infrastructure. Each project and each structure within each project shall include infrastructure that facilitates connection to Questar Gas, Rocky Mountain Power, Comcast Cable, UTOPIA, and CenturyLink. This requirement may be waived if any of the aforementioned utilities decline, in writing, the opportunity to install or utilize the necessary infrastructure. The director of community and economic development and authorized deputies may approve the waiver. (Ord. 2021-19 § 1 (Att. A); Ord. 2013-04 § 1 (Att. A (part)))