Building Setbacks & Zoning in Issaquah, WA (2026)
3 verified building setbacks & zoning rules for Issaquah, Washington, sourced directly from the municipal code and official government pages.
Verified from official government sources
Setback Rules
Issaquah measures setbacks under Land Use Code § 18.404.030 from the street right-of-way or the abutting property line, and where two standards apply to a front, rear, or side setback the more restrictive one controls. Eaves, chimneys and similar features can project 18 inches, but only if three feet of setback remains to the property line.
Issaquah Setback Rules: Measurement, Projections and Garages
Some RestrictionsIssaquah Land Use Code § 18.404.030
A. The purpose of setbacks is to provide light, air, emergency access, fire protection, and buffers between adjoining uses, separation from adjoining lots, and frontage. B. Setbacks are measured from the right-of-way or from an abutting property line. When two different standards apply to front, rear, or side setbacks, the more restrictive setback is required. C. Setback distances by zone are e...
Structure Height Limits
Issaquah measures building height under Land Use Code § 18.404.050 from the lower of existing or finished average grade to the midpoint of the highest gable on a 4:12 to 12:12 pitched roof, or to the coping of a flat roof. Water towers, chimneys to code minimums, elevator shafts and similar features are exempt.
Issaquah Building Height Rules: Measurement and Exemptions
Some RestrictionsIssaquah Land Use Code § 18.404.050
1. Nonshoreline Areas. Building or structure height must be measured from the average grade of the existing or finished grade, whichever is lower, to the midpoint of the highest gable of a pitched or hipped roof with a minimum 4:12 pitch and a maximum of 12:12 pitch, or the highest point of the coping of a flat roof (see Figures 18.404.050(B)(1) and 18.404.050(D)(1)). All parts of the roof exte...
Lot Coverage Limits
Issaquah regulates lot coverage as an impervious surface ratio under Land Use Code § 18.404.040: building footprints, driveways, parking, walkways, decks, patios and pools all count. Urban Village zones allow up to 100 percent impervious surface, subject to stormwater and design standards, and eaves of 18 inches or less are not counted.
Issaquah Impervious Surface Limits and Lot Coverage Rules
Some RestrictionsIssaquah Land Use Code § 18.404.040
C. Impervious Surfaces. ... The total impervious surface of a site is determined by adding the square footage of all the following areas: ... 2. Parking. ... The gravel and paved parking areas and driveways; ... 4. Recreation Facilities. Decks, patios, porches, tennis courts, sport courts, pools and other similar recreation facilities; ... D. Impervious Surface Ratio. ... The impervious surface...
Looking for King County county-wide rules?
County ordinances apply to unincorporated areas and may supplement Issaquah city rules.
Building Setbacks & Zoning in King County →