Skip to main content

A. Standards for Urban Residential Zones. Table 18.2.5.030.A contains standards for the R-1, R-1-3.5, R-2, and R-3 zones. Standards for the RR and WR zones are contained in subsections 18.2.5.030.B and 18.2.5.030.C.

Table 18.2.5.030.A. Standards for Urban Residential Zones1

(Except as modified under chapter 18.5.5, Variances, or chapter 18.3.9, Performance Standards Option.)

Standard

R-1

R-2

R-3

R-1-10

R-1-7.5

R-1-5

R-1-3.5

Residential Density (dwelling units/acre)

- Minimum

NA

NA

NA

NA

See density standards in Sec. 18.2.5.080

- Maximum

Per Min. Lot Area

Per Min. Lot Area

Per Min. Lot Area

Per Min. Lot Area

See also Sec. 18.2.5.080, for R-2 and R-3 zones

Lot Area – Minimum (square feet)

- Lot

10,000 sf

7,500 sf

5,000 sf, 6,000 sf for corner lots

5,000 sf1

See density standards in Sec. 18.2.5.080

1Exception providing for minimum lot area of 3,500 sf in R-1-3.5 zone applies only where the lot contains an existing single-family dwelling that meets setback, density, and lot coverage standards; variances under this section are subject to Type I procedure.

Lot Width – Minimum (feet)

75 ft2

65 ft2

50 ft2

50 ft2

50 ft

50 ft

2Width shall not exceed depth

Lot Depth (feet)

- Minimum

80 ft

80 ft

80 ft

80 ft

80 ft

80 ft

- Maximum3

150 ft

150 ft

150 ft

250% of width

250% of width

250% of width

3Does not apply to Partitions

Standard Yards – Minimum4 (feet)

- Front – Standard, except:

15 ft

15 ft

15 ft

15 ft

15 ft

15 ft

- Front – Unenclosed Porch5

8 ft

8 ft

8 ft

8 ft

8 ft

8 ft

- Front – Garage Opening

20 ft

20 ft

20 ft

20 ft

20 ft

20 ft

- Side – Standard

6 ft

6 ft

6 ft

6 ft

6 ft

6 ft

- Side – Corner Lot Adjacent to Street

10 ft

10 ft

10 ft

10 ft

10 ft

10 ft

- Rear – Single-Story Building

10 ft

10 ft

10 ft

10 ft

10 ft

10 ft

- Rear – Multi-Story Building

10 ft per Bldg Story, 5 ft per Half Story

10 ft per Bldg Story, 5 ft per Half Story

10 ft per Bldg Story, 5 ft per Half Story

10 ft per Bldg Story, 5 feet per Half Story

10 ft per Bldg Story, 5 feet per Half Story

10 ft per Bldg Story, 5 feet per Half Story

4See sections 18.2.4.050 and 18.2.5.060 for yard exceptions, and 18.2.5.040 for accessory structure setback exceptions; additional setbacks may be required to avoid easement encroachments, and to comply with Solar Access requirements in chapter 18.4.8.

5 For setback, or the width of any existing public utility easement, whichever is greater; an unenclosed porch must be no less than 6 feet in depth and 8 feet in width, see section 18.6.1.030 for definition of porch; in the Historic District Overlay unenclosed porch provisions do not apply, and the minimum front yard is 20 ft.

6Does not apply to a side yard adjacent to an alley.

Building Separation, On Same Site – Minimum

NA7

NA7

NA7

NA7

½ the height of the tallest building, where building height is measured at the two closest exterior walls; maximum separation required is 12 ft8

(see Figure 18.3.9.070.B)

7Except as required under chapter 18.3.9 Performance Standards Option.

8Except as required by building code; accessory structures are exempt from this requirement and subject to applicable building code requirements.

Building Height – Maximum9 (feet)

35 ft or 2 ½ stories, whichever is less, except structures within Historic District Overlay shall not exceed 30 ft

35 ft or 2 ½ stories, except up to 50 ft with CU permit approval

9See figure in the definition of “height of building” in section 18.6.1.030.

Lot Coverage – Maximum10, 11

(% of lot area)

40%

45%

50%

55%

65%

75%

10A total area up to 200 sf or 5% of the permitted lot coverage, whichever is less, may be developed in an approved, porous solid surface that allows storm water infiltration, and is exempt from the lot coverage maximum; the porous solid surface exemption does not apply to driveways and parking areas.

11Within Cottage Housing Developments up to 10% of the permitted lot coverage may be developed in an approved, porous solid surface that allows storm water infiltration, and is exempt from the lot coverage maximum.

Landscape Area – Minimum (% of developed lot area)

60%

55%

50%

45%

35%

25%

Outdoor Recreation Space - Minimum (% of site area)12

NA

NA

NA

NA

8%

8%

12See chapter 18.3.9 for additional open space requirements in Performance Standard Options developments.

B. Woodland Residential Zone. Standards for the Woodland Residential (WR) zone follow:

Table 18.2.5.030.B. Standards for Woodland Residential (WR) Zone

(Except as modified under chapter 18.5.5 Variances or chapter 18.3.9 Performance Standards Option.)

Minimum Lot Area and Maximum Density

Slope

Min. Lot Size

DU/Acre

Less than 40%

2

0.5

Limits on density transfer. All developments, with the exception of partitioning, must be developed under the Performance Standards Option, chapter 18.3.9. Not more than 25% of the density allowed in a WR zone may be transferred to a higher density zone in a Performance Standard Options development.

40 to 50%

2.5

0.4

50 to 60%

5

0.2

Over 60%

10

0.1

Outside UGB

20

0.05

Lot Coverage – Maximum1 (% of lot area)

7%

1A total area up to 200 sf or 5% of the permitted lot coverage, whichever is less, may be developed in an approved, porous solid surface that allows storm water infiltration, and is exempt from the lot coverage maximum; the porous solid surface exemption does not apply to driveways and parking areas.

Lot Width - Minimum (feet)

100 ft

Lot Depth - Minimum and Maximum (feet)

150 ft

Standard Yards – Minimum2 (feet)

- Front – Standard

20 ft

- Side – Standard, except:

6 ft

- Side – Corner-Street/Alley Side

10 ft

- Rear – Single-Story Building

10 ft

- Rear – Multi-Story Building

10 ft per Bldg Story

2See sections 18.2.4.050 and 18.2.5.060 for yard exceptions, and 18.2.5.040 for accessory structure setback exceptions; additional setbacks may be required to avoid easement encroachments, and to comply with Solar Access requirements in chapter 18.4.8.

Maximum Building Height

35 ft or 2 ½ stories, whichever is less.

C. Rural Residential Zone. Standards for the Rural Residential (RR) zone follow:

Table 18.2.5.030.C. Standards for Rural Residential (RR) Zone

(Except as modified under chapter 18.5.5 and Variances or chapter 18.3.9 Performance Standards Option.)

Minimum Lot Area and Maximum Density1

Zone

Min. Lot Size*

RR-.5

0.5 acre

See also 18.2.5.080 Residential Density.

RR-1

1 acre

RR-2.5

2.5 acres

1The minimum lot size depends on the topographic nature, service availability, surrounding land uses, and other relevant characteristics of the area.

Lot Coverage – Maximum (% of lot area)2

Lot Type

Lot Coverage

RR-.5

20%

RR-1

12%

RR-2.5

7%

2A total area up to 200 sf or 5% of the permitted lot coverage, whichever is less, may be developed in an approved, porous solid surface that allows storm water infiltration, and is exempt from the lot coverage maximum; the porous solid surface exemption does not apply to driveways and parking areas.

Lot Width - Minimum (feet)

100 ft

Lot Depth - Minimum and Maximum (feet)

150 ft and not more than 300% of width

Standard Yards – Minimum3 (feet)

- Front – Standard

20 ft

- Side – Standard, except:

6 ft

- Side – Corner-Street/Alley Side

10 ft

- Rear – Single-Story Building

10 ft

- Rear – Multi-Story Building

10 ft per Bldg Story

3See sections 18.2.4.050 and 18.2.5.060 for yard exceptions, and 18.2.5.040 for accessory structure setback exceptions; additional setbacks may be required to avoid easement encroachments, and to comply with Solar Access requirements in chapter 18.4.8.

Maximum Building Height

35 ft or 2 ½ stories, whichever is less; except the height of agricultural structures is not limited, when the structure is placed 50 feet or more from all property lines.

(Ord. 3147 § 3, amended, 11/21/2017)

Loading…