Bellevue vs Renton
How do stormwater management rules compare between Bellevue, WA and Renton, WA?
Bellevue and Renton have similar restriction levels.
Bellevue, WA
King County
Bellevue stormwater rules under BCC 24.06 and LUC 20.25H require flow control and water-quality treatment for new or modified impervious surfaces, with illicit-discharge enforcement.
View full Bellevue 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 | Bellevue | Renton |
|---|---|---|
| - | - | |
| 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.
Bellevue FAQ
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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