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Single Dwelling Zones

The single-dwelling zones are intended to preserve land for housing and to provide housing opportunities for individual households. The zones implement the comprehensive plan policies and designations for single-dwelling housing.

Use regulations are intended to create, maintain and promote single-dwelling neighborhoods. They allow for some non-household living uses but not to such an extent as to sacrifice the overall image and character of the single-dwelling neighborhood.

Development standards preserve the character of neighborhoods by providing six different zones with different densities and development standards. The development standards work together to promote desirable residential areas by addressing aesthetically pleasing environments, safety, privacy, energy conservation, and recreational opportunities. The site development standards allow for flexibility of development while maintaining compatibility within the City's various neighborhoods. In addition, the regulations provide certainty to property owners, developers, and neighbors about the limits of what is allowed. The development standards are generally written for houses on flat, regularly shaped lots. Other situations are addressed through special regulations or exceptions.

Table 610-1
Maximum Density Standards
 
Maximum Density
1 unit per 87,120 sq. ft.
1 unit per 20,000 sq. ft.
1 unit per 10,000 sq. ft.
1 unit per 7,000 sq. ft.
1 unit per 5,000 sq. ft.
 
Table 110-3
Development Standards In Single-Dwelling Zones [1]
Standard
detached
attached
Maximum Height
30 ft. [2]
30 ft. [2]
30 ft. [2]
30 ft. [2]
30 ft. [2]
35 ft. [2]
35 ft. [2]
See 33.110.215              
Minimum Setbacks
- Front building setback
20 ft.
20 ft.
20 ft.
15 ft.
10 ft.
10 ft.
10 ft.
- Side building setback [3] [4] [8]
10 ft.
10 ft.
10 ft.
5 ft. [9]
5 ft. [9]
5 ft. [9]
5 ft.[5] [9]
- Rear building setback [3] [8]
10 ft.
10 ft.
10 ft.
5 ft.
5 ft.
5 ft.
5 ft.
- Garage entrance setback [3] [6]
18 ft.
18 ft.
18 ft.
18 ft.
18 ft.
18 ft.
18 ft.
             
Required Outdoor Area
- Minimum area
250 sq. ft.
250 sq. ft.
250 sq. ft.
250 sq. ft.
250 sq. ft.
250 sq. ft.
200 sq. ft.
- Minimum dimension [7]
12 ft. x 12 ft.
12 ft. x 12 ft.
12 ft. x 12 ft.
12 ft. x 12 ft.
12 ft. x 12 ft.
12 ft. x 12 ft.
10 ft. x 10 ft.
See 33.110.235              

Notes:

[1] These standards may be superseded by the regulations of an overlay zone or plan district.
[2] Some lots may be subject to a different height standard. See 33.110.215.B.
[3] No setback is required from a lot line abutting an alley.
[4] The side setback for lots in front of flag lots may be reduced to 3 feet. See 33.110.220.D.2.
[5] Applies only to the perimeter of the attached unit development. See 33.110.240 C for more information.
[6] The walls of the garage structure are subject to 33.110.250.E and the applicable front, side, or rear building setbacks.
[7] The shape of the outdoor area must be such that a square of the stated dimension will fit entirely in the outdoor area.
[8] No setbacks are required from an internal lot line that is also a zoning line on sites with split zoning. See 33.110.220.D.6.
[9] The minimum setback between an existing building and a side lot line along a proposed right-of-way or tract may be reduced to 3 feet when proposed as part of a land division.


Table 110-4
Maximum Building Coverage Allowed in the RF through R2.5 Zones [1]
Lot Size
Maximum Building Coverage
Less than 3,000 sq. ft.
50% of lot area
3,000 sq. ft or more but less than 5,000 sq. ft.
1,500 sq. ft. + 37.5% of lot area over 3,000 sq. ft.
5,000 sq. ft. or more but less than 20,000 sq. ft.
2,250 sq. ft + 15% of lot area over 5,000 sq. ft.
20,000 sq. ft. or more
4,500 sq. ft. + 7.5% of lot area over 20,000 sq. ft.

[1] Group Living uses are subject to the maximum building coverage for institutional development stated in Table 110-5.


Table 610-2
Lot Dimension Standards
 
Minimum Lot Area
52,000 sq. ft.
12,000 sq. ft.
6,000 sq. ft.
4,200 sq. ft.
3,000 sq. ft.
Maximum Lot Area
151,000 sq. ft.
34,500 sq. ft.
17,000 sq. ft.
12,000 sq. ft.
8,500 sq. ft.
Minimum Lot Width
60 ft.[1]
60 ft.[1]
50 ft.[1]
40 ft.[1]
36 ft.[1]
Minimum Front Lot Line
30 ft.
30 ft.
30 ft.
30 ft.
30 ft.
Minimum Lot Depth
60 ft.
60 ft.
60 ft.
55 ft.
50 ft.

[1] See 33.610.200.D.