Grading & Drainage: Bellevue vs Kent
How do grading & drainage rules compare between Bellevue, WA and Kent, WA?
Bellevue and Kent have similar restriction levels.
Bellevue, WA
King County
Bellevue requires grading permits for moving over 50 cubic yards of earth or disturbing over 2,000 sq ft. Drainage must meet the 2022 Stormwater Management Manual for Western Washington.
View full Bellevue rules →Kent, WA
King County
Kent requires a grading permit for most cut or fill over 50 cubic yards under KCC Title 14. Drainage changes must match the DOE Western Washington Stormwater Manual and not harm neighbors.
View full Kent rules →Key Facts Comparison
| Fact | Bellevue | Kent |
|---|---|---|
| - | - | |
| Permit trigger | - | 50 cy cut or fill |
| Disturbance | - | 7,000 sf |
| Steep slopes | - | Geotech at >15% |
| Retaining walls | - | Permit over 4 ft |
Highlighted rows indicate differences between cities.
Bellevue FAQ
Kent FAQ
Do I need a permit to regrade my Kent yard?
Yes if you move more than 50 cubic yards, disturb over 7,000 sf, or change drainage affecting a neighbor.
Can I add fill in a floodplain?
Fill in the Green River floodway is prohibited; in the flood fringe it requires permits and compensating storage in many cases.
Compare other topics
See how Bellevue and Kent compare on other ordinance categories.
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