Kirkland, WA Building Setbacks & Zoning: Structure Height Limits (2026)
Key Facts
- RS/PLA 3C/PLA 6E max height
- 25 ft above ABE
- RSX/RSA/PLA 16 max height
- 30 ft above ABE
- Skylight exception
- up to 6 inches over limit
- Solar panel exception
- 6 in sloped / 20 in flat roof
- Peaked roof design review bonus
- up to 5 feet
- Noncompliance fine
- $100-$500 per day
Summary
Kirkland limits detached house height to 25 feet above average building elevation (ABE) in RS, PLA 3C and PLA 6E zones, and to 30 feet in RSX, RSA and PLA 16 zones, under the KZC 15.30.060 Density/Dimensions Table. ABE is a calculated elevation, not the natural grade, computed under KZC 115.59, and a short list of features may exceed the cap.
Detached Dwelling Unit ... Maximum Height of Structure ABE = Average Building Elevation ... RS, PLA 3C, PLA 6E: 25' above ABE. RSX, PLA 16: 30' above ABE. RSA: 30' above ABE.21 WD II: 25' above ABE.25, 26
Official source re-checked September 8, 2026: no newer edition of the code had been published (publisher’s edition: current through Ordinance 4945, passed July 21, 2026).
Full Breakdown
060: 25 feet above average building elevation (ABE) for Detached Dwelling Units in the RS, PLA 3C and PLA 6E zones, and 30 feet above ABE in the RSX, RSA and PLA 16 zones. 59 requires it to be calculated from a formula weighting the mid-point elevation of each building wall segment by that segment's length, using predevelopment grades unless fill was placed on the site within the prior 10 years, in which case the pre-fill grade controls. Decks, porches without open walls or roofs, and cantilevered enclosed space count toward the segments used in the calculation.
120. A structure reviewed through Design Review under Chapter 142 KZC with a peaked roof sloped at least 3:12 may add up to five feet to the peak. Noncommercial amateur radio towers may exceed the height limit if the Planning Official finds the tower minimizes visibility from adjacent properties, does not exceed the height needed to function, and does not interfere with nearby utility lines, following Process I under Chapter 145 KZC.
Violations & Fines
Building a structure over the KZC 15.30.060 height cap without an applicable exception is a zoning violation subject to the City's general code enforcement process under Chapter 1.12 KMC. The City may issue a notice and order of civil violation carrying fines of $100 per day for the first 15 days of noncompliance, $250 per day for days 16 through 30, and $500 per day after that, capped at $50,000 per violation, plus a stop-work order under KMC 1.12.070.
Frequently Asked Questions
How is building height measured in Kirkland?
What is the maximum house height in Kirkland's RS zone?
Can I exceed the height limit for solar panels or a peaked roof?
What happens if I build too tall?
Sources & Official References
Other rules in Kirkland
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Structure Height Limits in Nearby Cities
How other cities in King County handle structure height limits.