5 county-level rules, plus city-specific rules for 1 city in Whatcom County, Washington.
Verified from official government sources
Whatcom County requires both a building permit and a plumbing permit for any residential pool, spa, or hot tub. Plans covering structure, GFCI electrical, drainage, and barriers are reviewed before final inspection, and larger designs may need a Washington-licensed engineer's stamp.
Whatcom County, WA — Swimming Pools & Hot Tubs (Accessory Structures)
Pools and hot tubs require building and plumbing permits.
Residential pools and spas in Whatcom County need a barrier meeting International Building Code Section 3109 — at least 48 inches high, no gap a 4-inch sphere passes, with a self-closing, self-latching gate that opens away from the pool.
Whatcom County, WA — Swimming Pools & Hot Tubs (Accessory Structures)
Power safety cover or a spa with a safety cover complying with ASTM-F-1346 excepts applicants from pool-fence type barriers.
Whatcom County enforces pool safety through the adopted International Building Code and the federal VGB Act. Anti-entrapment drain covers, a compliant barrier or safety cover, and GFCI electrical are required; public pools also fall under state health rules in WAC 246-260.
Whatcom County, WA — Swimming Pools & Hot Tubs (Accessory Structures)
IBC 3109 has been adopted by Whatcom County with a Washington State amendment of Section 3109.3 for public swimming pools that are regulated by Washington State Department of Health WAC 246-260-031(4).
An above-ground pool in Whatcom County needs building and plumbing permits and a compliant barrier, but a prefabricated pool installed entirely above ground and less than 24 inches deep at a single-family home is exempt from permitting.
Whatcom County, WA — Swimming Pools & Hot Tubs (Accessory Structures)
Prefabricated swimming pools installed entirely above ground, less than 24 inches deep and accessory to a Group R-3 (single family residence.)
Whatcom County requires building and plumbing permits for a hot tub or spa, mainly for the 240-volt GFCI electrical connection. A spa fitted with a safety cover meeting ASTM-F-1346 is excepted from the pool-fence barrier.
Whatcom County, WA — Swimming Pools & Hot Tubs (Accessory Structures)
Pools and hot tubs require building and plumbing permits.
1 cities in Whatcom County have their own swimming pools & spas rules. Each link goes to that city's dedicated page with code citations.
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