Federal Way vs Kent
How do grading & drainage rules compare between Federal Way, WA and Kent, WA?
Federal Way and Kent have similar restriction levels.
Federal Way, WA
King County
Federal Way requires a grading permit for most cut or fill over 50 cubic yards under FWRC Title 19. Drainage changes must match the DOE Western Washington Stormwater Manual and not harm neighbors.
View full Federal Way 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 | Federal Way | Kent |
|---|---|---|
| Permit trigger | 50 cy cut or fill | 50 cy cut or fill |
| Disturbance | 7,000 sf | 7,000 sf |
| Steep slopes | Geotech at >15% | Geotech at >15% |
| Retaining walls | Permit over 4 ft | Permit over 4 ft |
Highlighted rows indicate differences between cities.
Federal Way FAQ
Do I need a permit to regrade my Federal Way 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 a floodway is prohibited; in the flood fringe it requires permits and compensating storage in many cases.
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
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