Bellevue, WA Swimming Pools & Spas: Pool Permits (2026)

Any residential swimming pool, hot tub, or spa in Bellevue that is capable of containing water more than 24 inches deep requires a building permit issued by the Development Services Department under BCC Title 23 (adopted International Residential Code) and the Washington State Building Code. This applies to both in-ground and above-ground pools. Separate electrical permits must be pulled for pool pumps, lighting, bonding, and GFCI protection, and a plumbing permit is required for water supply and backflow prevention. A backflow prevention assembly is required to protect the potable water system under the Washington Department of Health rules. Hot tubs installed as part of a new residential construction may be covered by the overall building permit, while retrofits require a standalone permit. Pool locations must meet Land Use Code setbacks for detached accessory structures (generally 5 feet rear, matching side setbacks, 10 feet from street right-of-way). Pools within critical areas or shoreline overlay are subject to additional review. Final inspection must pass before the pool is filled and used.