What's Required in San Francisco
- A building permit with plans is required for any pool or spa except a prefabricated above-grade pool of 5,000 gallons or less at a one- or two-family home.
- Separate plumbing and electrical permits are required for pool piping, pump, lights and bonding; a pool heater or its gas line needs a plumbing or mechanical permit.
- State law defines a pool as any structure holding water over 18 inches deep, including hot tubs and portable spas.
- At least two of the seven drowning-prevention features in Health and Safety Code 115922 must be installed and are inspected before final approval.
- A pool enclosure must be at least 60 inches high, with self-closing, self-latching gates opening away from the pool and latching at 60 inches or higher.
- The building permit fee is DBI plan review plus issuance on the project valuation; electrical fees must be paid before permission to energize.
- Homeowner trade permits are limited to stand-alone single-family houses where the owner does the work; contractors must be licensed and registered with the City.
- The pool contractor must give the owner written notice of the state's pool safety requirements.
Do You Need a Permit for a Pool or Spa in San Francisco?
For almost every pool, yes. The Building Code's exemption list, as summarized by the Department of Building Inspection (DBI), spares only prefabricated swimming pools accessory to a one- or two-family home whose walls are entirely above the adjacent grade and whose capacity does not exceed 5,000 gallons. An in-ground pool, a gunite spa, a large above-ground pool, or any pool whose shell is set into the ground needs a building permit with plans, plus separate plumbing and electrical permits for the piping, pump and lights. Even the exempt prefab pool needs an electrical permit for a new pump circuit; the exemption only removes the building permit. State law then adds the safety layer: California's Swimming Pool Safety Act defines a pool as anything holding water over 18 inches deep, hot tubs and portable spas included, and requires two of seven drowning-prevention features whenever a building permit is issued for a new or remodeled pool or spa at a single-family home.
San Francisco Pool Permit Rules by Scenario
| What you are doing | City filing | Rule |
|---|---|---|
| Prefab above-ground pool up to 5,000 gallons at a house or duplex | No building permit; electrical permit for the pump | Building Code 106A.2 exemption; $305 electrical |
| Plug-in portable spa on an existing exterior outlet | No building permit; no electrical permit if wiring is unchanged | Electrical Code 89.121(B) appliance exemption |
| Hard-wired hot tub or spa on a new circuit | Electrical permit | $305 for up to 10 outlets or devices |
| In-ground pool or spa, or above-ground pool over 5,000 gallons | Building permit with plans + plumbing + electrical permits | Valuation-based DBI fee; state safety features inspected before final |
| Pool heater or gas line to a heater | Plumbing or mechanical permit | Separate permits for gas piping and gas appliances |
| Remodeling an existing pool or spa | Building permit + trade permits | Safety Act applies to remodels too |
| Pool in a required rear yard or near a property line | Planning review with the building permit | Ask PIC@sfgov.org before designing |
How Much Does a Pool Permit Cost in San Francisco?
DBI's building permit fee is a valuation formula from Table 1A-A, effective July 12, 2026, and a pool needs plans so both halves apply. For work valued between $2,001 and $50,000 the plan review fee is $310 for the first $2,000 plus $28.35 per additional $1,000 or fraction, and the issuance fee is $266 plus $8.56 per $1,000; from $50,001 to $200,000 the rates are $1,617 plus $15.60 per $1,000 and $677 plus $4.83 per $1,000. A $20,000 gunite spa therefore pays $820.30 plus $420.08, about $1,240. A $60,000 in-ground pool pays $1,773 plus $725.30, about $2,498, and a $100,000 pool about $3,316. Trade permits are flat: an electrical permit for the pump, lights and bonding is $305 for up to 10 outlets or devices, and pool piping that no plumbing category names falls to the $320 miscellaneous category or DBI's $519 hourly rate. That lands a typical in-ground pool between $3,100 and $3,950 in DBI fees, before state fees of $4 per $100,000 of valuation and 0.00013 times valuation for strong-motion instrumentation. If Planning reviews the pool's location, its building-permit application fee applies as well.
State Safety Rules Your Plans Must Show
When DBI issues a permit for a new or remodeled pool or spa at a single-family home, the state requires at least two of these: an enclosure isolating the pool from the house, removable mesh fencing with a self-closing, self-latching gate, an ASTM F1346-23 safety cover, exit alarms on doors and windows opening to the pool, self-closing, self-latching devices with the release at least 54 inches up on those doors, a certified pool alarm, or an independently verified equivalent. An enclosure must be at least 60 inches high with gates that open away from the pool and latch no lower than 60 inches, no more than 2 inches of clearance at the bottom, no gaps that pass a 4-inch sphere, and no footholds. DBI inspects the chosen features before final approval.
Who Files and How the Process Works
A property owner can pull the building permit, or a licensed contractor, typically a C-53 swimming pool contractor, with the plumbing permit under a C-36 and the electrical under a C-10; a homeowner may pull the trade permits only for a stand-alone single-family house and only for work done personally. Pools are not on DBI's over-the-counter lists, so plan on in-house review: submit plans with the engineered shell, the site plan showing setbacks, and the safety features, pay the filing fee to start review, then the issuance fee. Trade work is inspected before it is covered, the electrical permit's fees must be paid before permission to energize, and the pool cannot get its final until the drowning-prevention features pass.
How to Get a Pool Permit in San Francisco
Check the exemption and the yard
Only a prefab above-grade pool of 5,000 gallons or less at a house or duplex skips the building permit; email PIC@sfgov.org to learn whether Planning must review the pool's location.
Prepare plans with the safety features
Site plan, structural shell, piping and electrical layouts, and the two chosen drowning-prevention features (enclosure at 60 inches, alarms, cover or latches).
Submit for in-house review and pay the filing fee
Pools are not on DBI's over-the-counter lists; review starts when the filing fee is paid, and plan review is $310 plus $28.35 per $1,000 over $2,000 up to $50,000.
Pull the trade permits
Electrical ($305 for up to 10 devices) for the pump, lights and bonding; plumbing for the piping and any heater gas line, filed by licensed C-10 and C-36 contractors or a qualifying homeowner.
Inspect through to final
Trade work is inspected before it is covered; DBI inspects the drowning-prevention features and signs off the pool only after they pass and all fees are paid.