Retaining Walls: Bellevue vs Kirkland
How do retaining walls rules compare between Bellevue, WA and Kirkland, WA?
Bellevue and Kirkland have similar restriction levels.
Bellevue, WA
King County
Bellevue requires building permits for retaining walls over 4 feet measured from bottom of footing; walls in critical areas need geotechnical review regardless of height.
View full Bellevue rules →Kirkland, WA
King County
Kirkland requires building permits for retaining walls over 4 feet or any wall with a surcharge. Walls on Finn Hill, Juanita, and Lakeview steep slopes need geotechnical review regardless of height.
View full Kirkland rules →Key Facts Comparison
| Fact | Bellevue | Kirkland |
|---|---|---|
| - | - | |
| Permit Trigger | - | Over 4 ft or surcharged |
| Critical Areas | - | Geotech required |
| Rockeries | - | Same rules as walls |
| Drainage | - | Must go to stormwater |
Highlighted rows indicate differences between cities.
Bellevue FAQ
Kirkland FAQ
When do I need a permit for a retaining wall in Kirkland?
Any wall over 4 feet from footing base, any wall supporting a surcharge, or any wall in a critical area such as a steep slope or wetland requires a permit and often a geotechnical report.
Are rockeries treated like retaining walls?
Yes. Rockeries over 4 feet require permits and engineered designs under the Washington State Building Code as adopted by Kirkland.
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