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Table 18.07.030. Residential Development Standards 

Standard

RC

R-1

R-5

R-7

R-10

R-16

R-20

A

Base density (units per net acre)

0.25

1

5

7

10

16

20

B

Minimum density (units per net acre)1

0.25

1

4

5

8

12

15

C

Minimum lot area per dwelling unit (square feet)

174,240

35,000

4,500

4,300

2,000

2,000

2,000

D

Minimum lot width (feet)2

125

125

50

40

20 for interior lots; 35 for exterior lots

20 for interior lots; 35 for exterior lots

20 for interior lots; 35 for exterior lots

E

Minimum setbacks (feet)2,3

1

Residence front setback3

35

35

10

10

10

10

10

2

Garage (minimum front setback required from street access)3

20

20

20

20

20

20

20 unless alley-loaded then 15 provided there are 20 feet from any garage

3

Setback to any property line for barns, stables, or similar structures for enclosure of large domestic animals

For other animals, see the supplemental development standards for animals in ACC 18.31.220

75

X

X

X

X

X

X

4

Setback to any property line for any corral, exercise yard, or arena for large domestic animals

For other animals, see the supplemental development standards for animals in ACC 18.31.220

35

X

X

X

X

X

X

5

Interior side setback

20

10

5

5

5

5

5

6

Street side setback3

35

20

10

10

10

10

10

7

Rear setback3

35

35

20

20

20

20

20

8

Rear setback, detached structure

In all zones, 20 feet for structure with vehicular entrance oriented toward street or public alley3

15

15

10

5

5

5

5

F

Maximum lot coverage (%)

25

35

40

50

60

70

70

G

Maximum impervious area (%)

25

50

65

75

N/A

N/A

N/A

H

Maximum building height (feet)

35

35

35

35

45

45

50

I

Maximum height of accessory buildings and structures

354

35

16

16

16

N/A

N/A

J

Minimum front setback area landscape strip (feet)

N/A

N/A

5

5

10

10

10

K

Minimum side setback area landscape strip (feet)

N/A

N/A

5

5

10

10

10

L

Minimum landscaped open space (%)

N/A

N/A

N/A

N/A

20

20

20

1See ACC 18.02.065 for calculating density.

2All minimum lot widths, setbacks, and landscaping strips are subject to demonstration to the satisfaction of the city engineer that all required utility infrastructure, access requirements, and street elements can be accommodated in accordance with the design and construction standards.

3In addition to meeting setback requirements, all structures must meet sight distance requirements in accordance with city design and construction standards.

4Barns and other specialized structures used for agricultural purposes may exceed the height limits.

(Ord. 6661 § 3, 2018; Ord. 6600 § 10, 2016; Ord. 6245 § 5, 2009.)