Environmental Rules in Bellevue, WA (2026)
4 verified environmental rules for Bellevue, Washington, sourced directly from the municipal code and official government pages.
Verified from official government sources
Stormwater Management
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.
Stormwater Rules in Bellevue
Heavy RestrictionsErosion Control
Bellevue requires erosion control measures for land-disturbing activity. Clearing and Grading Code (LUC 20.25H) mandates BMPs on steep slopes and near critical areas.
Bellevue Erosion and Sediment Control Requirements
Heavy RestrictionsFlood Zones
Bellevue regulates development in FEMA Special Flood Hazard Areas under LUC 20.25H.150. Properties near Kelsey Creek, Coal Creek, and Lake Washington shoreline may require elevation and floodplain permits.
Bellevue Flood Zone and FEMA Floodplain Rules
Heavy RestrictionsGrading & Drainage
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.
Bellevue Grading and Drainage Permit Requirements
Heavy RestrictionsLooking for King County county-wide rules?
County ordinances apply to unincorporated areas and may supplement Bellevue city rules.
Environmental Rules in King County →