17.60.020 Residential development standards.
(1) Development Standards Table – Residential Zones.
|
SR 12.4 |
SR 9.610, 11, 12 |
SR 7.0 |
SR 5.0 |
MR |
|
|---|---|---|---|---|---|
|
Density: maximum dwelling unit per gross acre. Density standards are not subject to the variance procedure. Base Standard PRD review Cottage |
3.5 5 10 |
5 6 10 |
6 8 10 |
102 N/A 10 |
201 |
|
Lot Area: minimum square feet for subdivision. Base Standard PRD review Cottage |
12,400 10,000 3,000 |
9,600 7,000 3,000 |
7,000 5,000 3,000 |
5,000 N/A 3,000 |
20,000 |
|
Minimum Lot Width Base Standard PRD Cottage |
100' 85' 50' |
75' 60' 50' |
60' 50' 50' |
50' N/A 50' |
100' |
|
Minimum Lot Depth Base Standard PRD Cottage |
100' 100' 60' |
100' 80' 60' |
80' 75' 60' |
75' N/A 60' |
200' |
|
Front Setback Base Standard4 PRD Cottage Accessory Structure5 |
20 – 30'9 25' 10' 25' |
20 – 30'9 10' 10' 25' |
20' 10' 10' 25' |
10 – 20'3, 9 N/A 10' 20' |
20'3 20' |
|
Rear Setback Base Standard4 PRD Cottage Accessory Structure3 Congregate Care |
25' 25' 10' 5' |
25' 20' 10' 5' |
20' 15' 10' 5' |
15'3 N/A 10' 5' |
15'3 5' 20' |
|
Side Setback Base Standard4 PRD Cottage Accessory Structure5 Congregate Care |
15' 20' combined 5' each side 10' |
10' 15' combined 5' each side 5' |
10' 15' combined 5' each side 5' 5' |
5'3 N/A 5' 5' |
25'3 5' 10' |
|
Corner Lot Side Setback Base Standard4 PRD Cottage Accessory Structure |
15' 15' 10' 10' |
15' 15' 10' 5' |
15' 15' 10' 5' |
15' N/A 10' 5' |
25' |
|
Maximum Height Base Standard4 PRD Cottage Accessory Structure |
30' 30' 30' 20' |
30' 30' 30' 20' |
30' 30' 30' 20' |
30' N/A 30' 20' |
40'13 20' |
|
Percent of Lot Coverage Base Standard PRD Cottage Accessory Structure5, 6 |
307 40 40 107 |
35 40 40 10 |
40 40 40 10 |
50 N/A 40 10 |
40 |
|
Maximum Building Area Cottage |
1,200 sq. ft. |
1,200 sq. ft. |
1,200 sq. ft. |
1,200 sq. ft. |
N/A |
|
Minimum Driveway Length Base Standard PRD Cottage |
None None 20' |
None 20' 20' |
None 20' 20' |
20'8 N/A 20' |
N/A |
(2) Development Conditions – Residential Zones. 1. In the MR zone, single-family detached use requires a minimum land area of 4,500 square feet per unit, duplex use requires a minimum land area of 7,000 square feet, and townhome use requires a minimum land area of 2,000 square feet for end units, and 1,800 square feet for interior units. Multiple structures may occur on a legal lot with a minimum of 20,000 square feet.
2. In the R 5.0 zone, duplexes and townhouses require a minimum land area of 7,000 square feet. Townhomes require a minimum land area of 2,000 square feet for end units, and 1,800 square feet for interior units. Multiple structures may occur on a legal lot with a minimum of 7,000 square feet.
3. The front, rear and side yard setbacks for attached dwellings in these zones are not intended to be applied to each individual dwelling when there are multiple buildings on a site. Rather, they are meant to be used to establish the minimum dimensional requirements for the perimeter of the housing development.
4. Setbacks are applicable to the primary structure, attached accessory structures and accessory dwelling units.
5. Excludes residential accessory structures.
6. Coverage for accessory dwelling units may be increased by 15 percent over the base coverage.
7. Greenhouses on farms within the SR 12.4 zone are excluded from maximum coverage calculations.
8. A 20-foot-long driveway from the front or rear is required in the SR 5.0 zone.
9. No two adjacent dwellings that front the same street shall have the same front yard setback unless otherwise approved by the city council. The front yard setback shall be randomly arranged with an equal number of dwellings at each increment. Setbacks shall be 20, 25 and 30 feet in the SR 12.4 and SR 9.6 zones. In the SR 5.0 zone, setbacks and structure placement shall be varied to accommodate the requirement for a 20-foot-long driveway from the front or rear in addition to the varied setback.
10. The community development director or hearing examiner may reduce lot sizes to a minimum of 8,000 square feet and/or widths to a minimum of 60 feet for the fewest number of lots necessary if development under the city’s regular standards precludes the development from meeting minimum urban net density as established under the Growth Management Act. In addition, lots in plats vested to Snohomish County standards prior to annexation may have lot size reduced to 5,000 square feet, lot width reduced to 50 feet and lot depth reduced to 75 feet; provided, that overall density of the plat conforms to the land use element of the Stanwood Comprehensive Plan.
11. The community development director may approve reduced side and rear setbacks of five feet when the adjacent tract is devoted to open space, recreation space, or storm water detention. In addition, development on lots in plats vested to Snohomish County standards prior to annexation may conform to SR 5.0 zoning district standards for setbacks.
12. Heights may be increased to 60 feet for high school facilities.
13. Maximum of three stories. The building shall have a pitched roof and comply with the architectural elements of Chapter 17.112 SMC, Architectural Design Standards. (Ord. 1492 § 3 (Exh. C), 2021; Ord. 1440 § 4, 2017; Ord. 1418 § 11, 2016; Ord. 1294 § 18, 2011).