Before You Build in Kent, WA: Permit & Rule Checklist (2026)

Kent requires a building permit for retaining walls over 4 feet tall measured from footing to top. Walls supporting surcharges or on geologically hazardous slopes need a permit at any height under WAC 51-16.

Private pools in Kent must have a barrier at least 4 feet tall with self-closing, self-latching gates per IBC Appendix G and IRC Section R326. Public pools must meet the 6-foot (72-inch) barrier under WAC 246-260.

Kent requires a building permit for fences over 7 feet tall or for any fence on critical area or shoreline parcels. Fences under 7 feet generally do not require a permit but must meet KCC 15.08 height limits.

Kent limits front yard fences to 4 feet and side and rear yard fences to 6 feet under KCC 15.08. Fences over 6 feet require a building permit and structural review.

Kent has no city requirement to split shared fence costs with a neighbor. Washington common law controls boundary fences. Survey the property line before building to avoid encroachment disputes.

Kent treats hot tubs and spas like pools under IRC Appendix G. Hot tubs with ASTM F1346 compliant lockable covers may be exempt from barrier requirements. GFCI and bonding required.

Kent requires building permits for swimming pools, spas, or hot tubs deeper than 24 inches. Permits are issued through Kent Economic and Community Development under the WA State Building Code.

Kent requires permits and barriers for above-ground pools deeper than 24 inches. Walls of at least 48 inches tall with a removable or locking ladder can serve as the barrier if the ladder meets code requirements.

Kent requires pool barriers at least 48 inches high with self-closing and self-latching gates under IRC Appendix G. Barriers are mandatory for pools deeper than 24 inches.

Kent pool owners must comply with federal VGB Act anti-entrapment drains, GFCI electrical protection, and WAC 246-260 for public or semi-public pools. Private pools follow state building code.

Kent garage conversions need building permits and must meet habitable-space standards for egress, insulation, heat, and alarms. Converting to an ADU is allowed under HB 1337 with zoning review.

Kent allows accessory dwelling units on single-family lots under Title 15 and implements WA HB 1337, which requires cities to allow up to two ADUs per lot. Detached and attached ADUs are both allowed.

Kent allows foundation tiny homes as permanent dwellings under the WA Building Code and as ADUs under HB 1337. Tiny homes on wheels are RVs and cannot be permanent residences outside licensed parks.

Kent allows residential carports as accessory structures under Title 15 and Title 14. Most need a building permit, must meet setbacks, and cannot be enclosed into a garage without new permits.

Kent allows residential sheds without a building permit when 200 square feet or less, under 12 feet tall, and not used for habitation. Larger sheds or any shed with utilities need a permit and must meet zoning setbacks.

Kent allows small recreational fires in portable pits or contained rings when no PSCAA burn ban is active. Fires must be under 3 feet wide, burn only clean dry firewood, and be attended at all times.

Kent prohibits residential yard-waste burning year round under Puget Sound Clean Air Agency rules. Only clean-firewood recreational fires are allowed when no burn ban is active.

Kent residents may trim private trees for routine maintenance without a permit. Street trees and trees in Critical Areas require city approval under Kent City Code Title 15 before significant work.

Kent runs its own water utility and buys wholesale for parts of the city. No permanent watering-day limits apply, but voluntary summer conservation and drought-stage restrictions can take effect.

Kent requires a tree removal permit under Chapter 15.08 for significant trees, Critical Area trees, and trees on undeveloped lots. Hazard and small trees on developed lots are usually exempt.