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A. Description

A single-family detached house is located on an individual lot with yards on all four sides of the house. Vehicular access can take place from the front, side, or rear of the lot.

B. Development Standards

A single-family detached house shall be permitted in accordance with the table below. A single-family detached house shall also be permitted in the RR District in accordance with the standards of paragraph 6.2.1A, Dimensional Standards.

Single-Family Detached Standards

RS-20

RS-10

RS-8

RS-M

RU-5,
RU-5(2)

RU-M

RC

Conventional Subdivision

Lot Dimensions (min. square feet)

Lot Area (w/o averaging)

20,000

10,000

8,000

5,000

5,000

3,500

5,000

Lot Area (with averaging)1

17,000

8,500

6,800

4,250

4,250

2,975

4,250

Lot Width (feet)

100

75

60

35

45

35

35

Yards (min. feet)2

Street Yard (adjoining collector or greater street)

35

25

25

25

20

15

10

Street Yard (adjoining local street)

35

25

25

20

20

15

10

Side Yard (single)

12

10

9

6

6

6

6

Side Yard (total) (no side yard total in Urban Tier)

30

24

22

15

Rear Yard

25

25

25

25

25

25

25

Cluster Subdivision

Lot Dimensions (min.)

Lot Area (square feet)

10,000

5,000

4,000

3,500

Lot Width (feet)

75

40

40

40

Yards (min. feet)

Street Yard

25

20

20

15

Side Yard (single)

9

6

6

5

Side Yard (total) (no side yard total in Urban Tier)

22

13

13

Rear Yard

25

25

25

25

1 Lot area with averaging may only be used if the requirements of paragraph 6.3.3C, Lot Averaging, 6.4.3C, Lot Averaging, or 6.5.3B, Lot Averaging, as appropriate, are met.

2 Yard modifications may be required pursuant to a Neighborhood Protection Overlay, or through application of infill regulations (Sec. 6.8, Infill Development in Residential Districts).

C. Small Lot Option

Additional standards, or modifications to the standards, below, may be required pursuant to a Neighborhood Protection Overlay, local historic district, or through application of infill regulations (Sec. 6.8, Infill Development in Residential Districts).

1. Applicability

The small lot option can be applied in the following zoning districts:

a. In any tier: RC, RS-M, RU-M, RU-5, and RU-5(2) zoning districts.

b. In the Urban Tier: RS-8 and RS-10 zoning districts.

2. Dimensional Standards

Lot Dimensions

Minimum Lot Area

2,000 square feet

Minimum Lot Width

25 feet

Yards

Minimum Street Yard

10 feet

Minimum Individual Side Yard

5 feet

Minimum Rear Yard

15 feet

Maximum Height

25 feet

3. Maximum Size of Primary Structure

The maximum floor area of the primary structure shall be 1,200 square feet, with a maximum building footprint of 800 square feet. For the purpose of this paragraph, the floor area shall include garages.

4. Additional Requirements

a. Driveway Design

(1) Driveways shall be shared with a recorded shared access agreement for any pair of lots.

(2) Driveways shall be designed as a “ribbon” (a.k.a. “strip”) driveway as follows:

(i) Each strip shall be two to three feet wide with a three-foot separation.

(ii) The strips can terminate at the sidewalk or driveway apron, and to a parking pad at side or rear of the structure, to accommodate side-by-side parking or a garage entry.

KendigKeast Collaborative- Durango, CO

b. Trees

In addition to the required street tree, and in lieu of infill landscaping requirements in Sec. 6.8, if applicable, at least one canopy and one understory tree shall be planted or preserved on the lot.

(1) For tree preservation, the tree protection zone shall be maintained per paragraph 8.3.2, Protection of Existing Vegetation. Protection of invasive or other species precluded for planting pursuant to the Durham Landscape Manual shall not qualify.

(2) For tree planting, the Durham Landscape Manual shall be used to determine appropriate species and planting area.

c. Downspouts

In the Urban Tier, downspouts shall direct stormwater runoff over pervious area and not piped to right-of-way.

d. Alley Access

Where a lot abuts an improved and maintained alley, all vehicular access shall be taken from the alley.

5. Designation on Plat

Utilization of the small lot option shall be recorded on a plat at the time of approval, specifying the housing type and associated limitations.

6. Existing Single-Family Detached and Duplex Residential Structures on Small Lots

An existing single-family detached or duplex structure on a lot of record prior to the effective date of these standards can be improved pursuant to the applicable general standards for the single-family detached or duplex housing type. Such improvements may still be considered improvements or additions to a nonconforming structure pursuant to Sec. 14.4, Nonconforming Improvements and Structures.