Do you need a pool permit in Washington?
By Mario Bailey Last checked
- Always required
- 1
- of 8 jurisdictions
- Conditional
- 7
- depends on size or scope
- Not required
- 0
- exempt outright
Pool Permit rules nationwide, beyond Washington.
Requirements and size thresholds for pool permits vary by locality. The table below compares what each Washington county or city requires. Always confirm with the local office before starting.
Comparing states? See pool permit rules across every locality we cover.
What to know about pool permits in Washington
Pool permits in Virginia generally apply once a pool passes a size or depth threshold, and they often involve barrier and electrical safety requirements. Costs depend on the pool type and your locality. A licensed contractor helps ensure the pool and its safety features meet code.
The application steps and inspection sequence for pool permits come from the model code rather than from Washington law, so they read the same wherever you build. We keep that walkthrough in one place: how a pool permit application and its inspections work, start to finish. What changes between Washington jurisdictions is below: who requires a permit, what they charge, and which office you file with.
Swipe sideways to see thresholds and confidence.
| Locality | Permit required? | Typical threshold | Confidence |
|---|---|---|---|
| Bellevue | Conditional | swimming pools over 24 inches deep require a permit with plan review; above-ground pools 24 inches or less may be exempt | Confirmed on official page |
| Clark County | Conditional | A permit is required for any structure intended for swimming or recreational bathing that contains water over 24 inches deep, including in-ground, aboveground and on-ground pools, hot tubs and spas. | Confirmed on official page |
| King County | Conditional | prefabricated above-ground pools less than 24 inches deep and not exceeding 5000 gallons are exempt; all other pools require a building permit in unincorporated King County | From an official source |
| Pierce County | Conditional | Prefabricated swimming pools accessory to a single family residence (Group R-3 occupancy) are exempt if less than 24 inches deep, with no separate gallon volume cap; in-ground pools and pools 24 inches deep or deeper require a building permit. Self-contained spas and hot tubs installed entirely above ground and not connected to the potable water system or a septic or sewer drain are separately exempt regardless of depth. | Confirmed on official page |
| Seattle | Yes | Not specified | From an official source |
| Snohomish County | Conditional | prefabricated swimming pools regulated under the IRC (one- and two-family dwellings) exempt if less than 24 inches deep, with no gallon-volume cap; in-ground pools or pools 24 inches deep or more require a building permit | Confirmed on official page |
| Tacoma | Conditional | prefabricated above-ground pools less than 24 inches deep and not greater than 5000 gallons are exempt; all other pools require a building permit | From an official source |
| Thurston County | Conditional | Pools are exempt only if prefabricated, entirely above ground, less than 24 inches deep, and under 5,000 gallons capacity. | Confirmed on official page |
| No localities match your filter. | |||
What a pool permit costs in Washington
6 Washington jurisdictions we cover publish a fee figure for this work. Each line is quoted from that office's own schedule and linked to its citation. The figures are not comparable to one another: some are flat minimums, some a percentage of job value, some charged per fixture, so what you pay depends on which schedule applies and on your job's valuation.
Pool equipment electrical inspection fee of $94 without plan review per Table 7 of Ordinance 6879; the pool structure itself is a building permit by valuation under Table 4 plus a $25 state building code fee, effective 2026-01-01
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Most permit fees increased approximately 14% on January 1 2026 plus a $126 application screening fee
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Where a permit is required: in-ground pool permit $230.00; aboveground pool permit $58.00 if valued under $500 or $115.00 if valued $500 or more (PCC Table 17C.10-1-G, 2026 fees).
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An unenclosed pool accessory to a single-family or duplex home is a flat fee of four times the $292 SDCI base fee, $1,168, plus a 5% technology fee, per Fee Subtitle Table D-2 item 17a; a pool inside an enclosed building on the building plans carries no separate fee
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Priced from the PDS valuation table starting at a $45 permit fee plus $29.25 plan check at the lowest valuation bracket, plus a $150 base fee per application, the $6.50 state surcharge and a 3% technology surcharge, per PDS Bulletin 18 effective 3/13/2026; prefabricated pools with walls entirely above grade holding 5,000 gallons or less need no building permit
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Pools 24 inches deep or more need a permit priced from $55 for the first $500 of valuation plus $32 per $100 over $500, per the PDS Fee Schedule effective 1/1/2025
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Jurisdictions not listed publish no dollar figure we could quote. Absence does not mean a permit is free.
Common questions about pool permits in Washington
- Do I need a pool permit in Washington?
- In Washington it depends on the size of the job. Permits are issued locally, so the answer comes from your Washington city or county rather than a single statewide rule. Of the 8 Washington jurisdictions we have verified for pool work, 1 requires a permit outright, 7 depend on the size or scope of the job, and 0 require none.
- Is there a pool permit exemption in Washington?
- 7 of the 8 Washington jurisdictions we cover set a threshold rather than a flat rule, so the same job can be exempt in one Washington county and permitted in the next. The table above lists each Washington jurisdiction's published threshold in its own words, with the source and the date we verified it.
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