Kirkland vs Renton
How do stormwater management rules compare between Kirkland, WA and Renton, WA?
Kirkland and Renton have similar restriction levels.
Kirkland, WA
King County
Kirkland follows the Department of Ecology Western Washington Stormwater Manual through KMC Chapter 15 and 115 surface water code, requiring runoff control for new and redeveloped sites.
View full Kirkland rules →Renton, WA
King County
Renton Municipal Code 4-6-030 adopts the King County Surface Water Design Manual. Projects creating or replacing 2,000 sq ft of impervious area must manage runoff to protect local waters.
View full Renton rules →Key Facts Comparison
| Fact | Kirkland | Renton |
|---|---|---|
| Code | KMC 15 + Title 115 | - |
| Manual | Ecology Western WA Stormwater | - |
| Trigger | 2,000 sq ft impervious | - |
| LID Required | Where feasible | - |
| Hotline | (425) 587-3800 | - |
| Design manual | - | King County SWDM plus Renton Amendments |
| Threshold | - | 2,000 sq ft new or replaced impervious |
| Small project BMPs | - | Dispersion, rain gardens, permeable pavers |
| Illicit discharge | - | Prohibited under RMC 4-6-030 |
| Report spills | - | Renton Public Works (425) 430-7400 |
Highlighted rows indicate differences between cities.
Kirkland FAQ
Do I need stormwater review for a new driveway?
Replacing or expanding impervious surface over the code threshold triggers Kirkland stormwater minimum requirements and often a simplified small-parcel plan set.
Can I wash my car in the driveway?
Occasional residential car washing is allowed, but soapy runoff should be directed to landscaped areas. Commercial washing and fundraisers must use approved capture kits.
Renton FAQ
Do I need stormwater review for a 400 sq ft addition?
Usually not, since it falls below the 2,000 sq ft threshold, but cumulative impervious surface on your lot and any critical area issues may still trigger review.
Can I wash my car in the driveway?
Residential occasional car washing is generally tolerated, but commercial washing must route wastewater to the sanitary sewer, never to the storm drain.
Compare other topics
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