All R-3 projects may be subject to the following standards. Contact the Planning Division for more information. You can also download the R-3 Development Standards brochure (PDF).
Setbacks & Standards for R-3 Properties
Minimum Front Yard
- Average of the front setbacks of the two adjacent properties, up to a maximum of 30 feet, with a minimum of 20 feet. Minimum of 50 feet from the centerline of the street if it has a right-of-way less than 60 feet. For properties that have their front yards on Curtis or Electric Lanes, 15 feet.
Minimum Side Yard
- 5 feet for each interior side yard, increased by 1 foot for each story or partial story above the first floor
Minimum Corner Side Yard
- 10 feet for the street side of a corner lot, or 40 feet from the centerline of the street where lot sides upon street having a right-of-way of less than 60 feet. For properties on Curtis and Electric Lanes, 10 feet. For a reversed corner lot, a side yard equaling the required front yard setback of the first lot to its rear
Rear Yard
- 10 feet
- For properties that have rear yards on Curtis or Electric Lanes, 15 feet
Maximum Height
Maximum Lot Coverage
Maximum Floor Area Ratio
- 0.60 for all living areas (excluding non-living areas and garages), for lots up to 19,999 square feet
- 0.70 for all living area (excluding non-living areas and garages), for lots 20,000 square feet and larger
Minimum Distance Between Buildings
- 6 feet if only one or neither building is used for residential purposes
- 10 feet if both buildings are used for residential purposes

R-3 Parking Requirements
- Two covered spaces within an enclosed garage for each unit with a minimum width of nine feet, zero inches, and a minimum depth of 20 feet, zero inches (9 feet by 20)
- One additional parking space for each 750 square feet of gross living area in excess of 2,000 square feet Additional spaces may be uncovered
- Tandem parking may be permitted per §23.52.070(C)(4), see a Planner for more information
- See the Off-Street Parking Standards page for more details
R-3 Landscaping Requirements
- No more than 25% of the front yard setback area shall be covered by non-decorative hardscape features
- No more than 25% may be covered by decorative permeable hardscape features
- The remaining 50% front yard setback area, must be of drought-tolerant landscape material
- Artificial turf must adhere to all design standards outlined in AMC Section 23.48.020(1)
- Any changes to existing Landscaping shall be approved by the Planning Division
- Drip irrigation shall be considered whenever appropriate
- See AMC Section 23.48 page for more details
R-3 Inclusionary Housing Ordinance (IHO) Requirements