FEMA flood zone rules in Kent, WA — also called floodplain regulations or special flood hazard area (SFHA) rules — determine flood insurance requirements and elevation standards for new construction.
Kent is a FEMA-participating community with significant Green River and Mill Creek floodplain. New construction in mapped AE zones requires elevation 1 foot above base flood and a floodplain permit.
Kent covers a large valley floor floodplain mapped by FEMA as Special Flood Hazard Area (Zone AE) along the Green River, Mill Creek, Springbrook Creek, and several tributaries. Kent City Code Title 14 implements the National Flood Insurance Program and goes further: residential lowest floors must be elevated at least 1 foot above the base flood elevation (freeboard), fill in the floodway is prohibited, and substantial improvements (over 50 percent of structure value) trigger full compliance. Non-residential buildings can dry-floodproof to the same elevation. Any grading, filling, or building in the mapped floodplain requires a floodplain development permit. The Green River is protected by an accredited federal levee system, but flood insurance is still required by most lenders in Zone AE. After the 2022 FEMA map update, some areas gained or lost SFHA status, so property owners should pull a current FIRMette before starting work.
Contact your local code enforcement office for specific penalty information.
Kent, WA
Kent decibel limits follow WAC 173-60 and KCC 8.05 using EDNA zones. Residential receiving limit is 55 dBA day and 45 dBA night. Commercial sources are cappe...
Kent, WA
Kent industrial sources are capped at 70 dBA day and 65 dBA night at another industrial property, but only 60 dBA day and 50 dBA night when received at a res...
Kent, WA
Commercial trucks over 10,000 pounds GVWR generally cannot park on Kent residential streets except for active loading. Warehouse districts and truck routes h...
Kent, WA
Kent follows Washington State Building Code EV-ready requirements for new multifamily and commercial buildings. Public chargers exist at Kent Station and sev...
Kent, WA
Kent driveway aprons require Public Works approval under KCC Title 6. New or widened driveways need a right-of-way construction permit, and vehicles must not...
Kent, WA
Kent has no city requirement to split shared fence costs with a neighbor. Washington common law controls boundary fences. Survey the property line before bui...
Side-by-side rule comparisons with other cities in King County.
See how other cities in King County handle flood zones.
See how Kent's flood zones rules stack up against other locations.
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