Pool and spa permits

What the model code says

Which pools are exempt

The International Residential Code (IRC) exempts from a building permit:

Prefabricated swimming pools that are less than 24 inches (610 mm) deep.

That covers small inflatable and wading pools, not typical above-ground pools, which are usually 48 inches deep or more. The International Building Code (IBC), which some jurisdictions apply to accessory structures, has a narrower version: prefabricated pools accessory to a Group R-3 occupancy that are under 24 inches deep, hold no more than 5,000 gallons, and are installed entirely above ground.

Everything else, including in-ground pools, above-ground pools 24 inches or deeper, and permanently installed spas and hot tubs, generally needs review. The 2024 IRC sends the design to a separate code: “The design and construction of pools and spas shall comply with the International Swimming Pool and Spa Code” (R328.1; it was R327 in the 2021 IRC).

Residential versus public pools

The International Swimming Pool and Spa Code (ISPSC) defines a residential pool as one “accessory to a residential setting and available only to the household and its guests.” Pools at apartments, HOAs, clubs, and short-term rentals open to the public may count as public pools, which have stricter rules and often a state or county health department permit.

Barrier requirements

ISPSC Section 305 is the part most homeowners deal with. In the 2024 edition we reviewed:

Gate latch height rules also apply. States sometimes amend this section (the copy we reviewed carries a state amendment to the latch rule), so take latch heights from your local code.

The U.S. Consumer Product Safety Commission’s Pool Safely campaign gives matching homeowner guidance: “A fence of at least four feet in height should surround the pool or spa on all sides,” and “the water should only be accessible through a self-closing, self-latching gate.”

Electrical, decks, and drains

• Electrical. IRC Chapter 42 covers wiring and equipment for “all swimming pools, wading pools, decorative pools, hot tubs and spas, and hydromassage bathtubs,” with cross-references to NEC Article 680. Pool wiring is regulated closely, and a separate electrical permit and inspection are normal.
• Pool decks. The ISPSC requires deck design under the IRC or IBC (306.1). Raised wood decks around above-ground pools follow the deck rules in our deck permit guide.
• Suction entrapment. The federal Virginia Graeme Baker Pool and Spa Safety Act (2007) addresses drain entrapment, mainly in public pools and spas. Ask your inspector which suction-outlet rules apply to a residential pool.

Zoning, HOA rules, and setbacks

• Setbacks for the pool shell and the equipment pad (pumps and heaters are noisy, and some codes set separate equipment setbacks).
• Lot coverage or impervious surface limits that may count the pool and surrounding deck.
• Easements, which pools generally cannot encroach on.
• Drainage and discharge: where backwash and drained water can go. Some localities prohibit draining to the street or storm drain.
• Septic systems: keep the pool and excavation clear of the septic tank and drain field. The health department may need to review the site plan.
• HOA rules on fencing style, screening, and equipment placement.

Permits and inspections you can expect

A typical in-ground pool involves several permits and inspections:

1. Plan review: site plan, pool engineering or the manufacturer’s specifications, barrier plan, and electrical plan.
2. Pre-gunite or pre-pour inspection: steel reinforcement and bonding grid before concrete or shotcrete.
3. Electrical inspections: bonding, underground wiring, and equipment.
4. Plumbing or gas inspections: heater gas lines and pressure tests, where applicable.
5. Barrier inspection: fence, gates, alarms, or safety cover.
6. Final inspection: often required before the pool may be filled or used.

Above-ground pools usually need a building permit, an electrical permit for the pump circuit, and a barrier check.

What to prepare

• Site plan with pool and equipment location, distances to property lines, the house, septic, and easements.
• Pool specifications or engineered drawings, including depth and volume.
• Barrier plan: fence height, materials, gate hardware, and how house doors are protected.
• Electrical plan: panel capacity, circuit, disconnect location, and bonding.
• Heater details if gas, electric, or heat pump.
• Contractor licenses where your state licenses pool builders or trades.
• HOA approval if required.

How permit fees are calculated

Pool permit fees are set locally and are often a combination of building, electrical, and plumbing or gas fees. Common methods:

• Valuation-based building fees, sometimes using square-foot valuation tables. For example, the City of San Diego’s Information Bulletin 101 (January 2024), based on International Code Council data from August 2023, lists a valuation of $104 per square foot for a vinyl-lined swimming pool. That is a valuation used to compute the fee, not a fee.
• Flat pool permit fees, with separate electrical and plumbing permits.
• Plan review fees charged at submittal.

Check your county’s fee schedule through its profile in our directory.

Common mistakes

• Assuming an above-ground pool is exempt. Only prefabricated pools under 24 inches deep are exempt under the model IRC.
• Filling the pool before final inspection. Many jurisdictions prohibit use until the barrier passes.
• Gate hardware that doesn’t self-close or latch, or gates that swing inward toward the pool.
• Leaving climbable objects (equipment, planters, chairs) next to the barrier.
• Skipping the electrical permit for a pump or hot tub circuit. Pool wiring mistakes are a shock hazard.
• Building over a septic system or in an easement.