Pool Builders in Tomball, TX: City vs. County Permits & Free Matching

Inside City of Tomball limits

The city reviews pool plans. Tomball’s Building Division lists swimming pools among the plans it reviews, along with residential construction, remodeling and additions.^[1]
Adopted codes. The city is on the 2021 International Residential Code, the 2021 International Swimming Pool and Spa Code and the 2023 National Electrical Code, among others.^[1]
Online submittal. Permit applications and inspection requests go through the city’s SmartGov portal.^[2]
Who to contact. Building Division, 501 James St., (281) 290-1451, [email protected].^[1]

Unincorporated Harris County

Outside city limits on the Harris County side, the Office of the County Engineer issues residential pool permits. Outside the floodplain, that’s a site plan and application with no inspection. Inside the floodplain, add an electric-disconnect drawing, a field inspection and an As-Built Certificate.^[3] See our Cypress page for the full county process.

Unincorporated Montgomery County

North and east of town, some Tomball addresses fall in Montgomery County. Requirements depend on your exact location, floodplain status and utility district. Check your flood zone on FEMA’s Flood Map Service Center and ask your builder which permits they’ll pull.^[4]

Renovations, patio covers and outdoor kitchens

Pool renovation. The 2021 pool code Tomball adopted covers more than new builds. Ask your builder whether your resurfacing, equipment or plumbing scope needs a permit. See our pool renovation guide.
Patio covers and pergolas. Inside the city, additions go through Building Division plan review. If a freestanding pergola needs power, ask how far the electrical run will be.
Outdoor kitchens. Plan electrical, gas and water lines together, and decide early whether the kitchen will be covered.

Budget: start with published Houston-area ranges

Angi’s Houston page (updated August 2026) puts most inground pools at $51,832–$100,605, averaging $75,337.^[5] For resurfacing, Angi’s Houston resurfacing page (updated April 2026) puts the average at $10,846, with most homeowners spending $5,916–$14,790.^[6] These are third-party estimates for the Houston area, not quotes. Size, soil, access, finishes and permits all move the number. For patio covers and outdoor kitchens, see the published ranges in our patio cover cost guide and on our outdoor kitchens page.

Questions to ask a Tomball builder

Is my property inside City of Tomball limits, in Harris County or in Montgomery County?
Will you submit through SmartGov, and is the permit fee in your bid?
Is my lot in a floodplain, and how does that change the paperwork?
How far is the run for power and gas to the pool equipment or kitchen?

Frequently asked questions

Does the City of Tomball review pool plans?

Yes. The City of Tomball Building Division lists swimming pools among the plans it reviews, and the city has adopted the 2021 International Swimming Pool and Spa Code.

My address says Tomball but I'm not in the city. Who issues my permit?

Usually the county. In unincorporated Harris County, it's the Office of the County Engineer. Some Tomball addresses are in Montgomery County, where requirements depend on location and floodplain status.

How do I apply for a Tomball permit?

The City of Tomball takes permit applications and inspection requests online through its SmartGov portal. The Building Division can be reached at (281) 290-1451.

Does HTX Backyard charge homeowners?

No. It's free for homeowners. With your consent, we share your request with one matched builder, who pays us a fee.

Sources

Sources checked October 2026. Rules, fees and prices change. Confirm details with the agency, HOA or builder before you commit.

How we make money: HTX Backyard is free for homeowners. Participating builders pay HTX Backyard a fee when we introduce them to a homeowner. We are a matching service, not a contractor, and we do not perform, supervise or guarantee any work.