Waller County, Texas Building Permit Guide

Census Vintage 2025 estimates put Waller County at 69,858 people, 35,397 of them in the unincorporated balance. Prairie View has 8,969, Hempstead 7,194, the Waller County part of Katy 6,475 and Brookshire 6,090.

This guide covers Waller County’s fire code, septic and addressing processes and the City of Hempstead.

What requires a permit in Waller County?

Since January 1, 2025 Waller County enforces a Fire Code based on the 2021 International Fire Code for commercial buildings, public buildings and multifamily buildings of four or more units; such a building cannot be occupied until the county issues a certificate of compliance. Septic (OSSF) systems need a county permit. Outside city limits, most Texas counties issue no building permits for homes.

Waller County building department: who handles permitting

Waller County Environmental (septic): Designated Representative Tonya Mewis, 425 FM 1488, Hempstead, (979) 921-0391; Monday-Thursday 7:00 am to 4:30 pm and Friday 8:00 am to 12:00 pm, open during lunch.

Fire Marshal Brian Cantrell: administration office 32225 U.S. Highway 90 Business, Suite #114, Brookshire; 979-826-7785.

County Engineer: 775 Bus 290 East, Hempstead; (979) 826-7670; Monday-Thursday 8:00 am to 4:30 pm, Friday 8:00 am to 12:00 pm.

911 addressing: GIS/9-1-1 Coordinator John Murrell, 775 290 Business E, Hempstead; 979-826-7670; Monday-Thursday 8:00 am to 4:00 pm, Friday 8:00 am to 12:00 pm. The addressing regulations were revised effective April 2, 2025.

Fire Code Building Permits in Waller County

For commercial, public and 4+ unit buildings, plans in PDF stamped by a licensed design professional go to the Fire Marshal’s Office; once approved and the fee is paid, the county issues a Fire Code Building Permit. Payment is by credit card or check to Waller County; cash is not accepted.

How to get a septic permit in Waller County

Waller County permit costs and fees

• OSSF (effective 1.1.2020): single-family $310.00; commercial/non-single-family $510.00; re-inspection $150.00 (residential)
• Fire code: the fee is paid before the Fire Code Building Permit is issued, and a final inspection request must include the fee

Inspections in Waller County

Fire code inspections are requested on the county’s inspection request form at least 72 hours ahead; a final inspection request must include the fee and be signed by the design professional.

Subdivision names and the City of Hempstead

A new subdivision name must first be checked against the county’s Subdivision Index and then reserved by email to 911Addressing@wallercounty.us; an approval or denial letter follows.

Hempstead (county seat): the Building Department at 1236 11th Street uses a third-party contractor as building inspector/fire marshal and planner. Inspections are scheduled between 8:00 and 4:30 by calling (979) 826-2486 option 2 or emailing permits@hempsteadcitytx.gov. The city has its own impact fees and stormwater management regulations.

Waller County permit search and official resources

These are the primary sources behind this guide. Codes, fee schedules and procedures change — confirm the position for your filing date.

• Waller County Environmental
• Waller County Environmental fee schedule
• Waller County Fire Marshal
• Waller County 911 addressing
• Hempstead Building Department

Frequently asked questions

Does Waller County have a fire code?

Yes. Since January 1, 2025 it enforces a Fire Code based on the 2021 International Fire Code for commercial, public and 4+ unit multifamily buildings.

How do I apply for a septic permit in Waller County?

Online through MGO Connect, using the R number/Property ID from the Waller County Appraisal District.

Does the Waller County Fire Marshal take cash?

No. Payment is by credit card or check to Waller County.

Simplify Waller County permitting with Alliance Permitting

• Check whether the site is inside a city or on county land, and which office handles each permit there
• Prepare the county septic, floodplain, plat or road paperwork alongside any city building permit
• Track each approval and inspection through to the final sign-off

Alliance Permitting is a permit documentation and submission company in Texas. We prepare your paperwork, file it correctly and coordinate with the permitting authority through issuance. We are not a contractor and we do not perform licensed plan review or inspections; that work stays with your licensed team and the jurisdiction.

This guide is provided by Alliance Permitting for general information about Waller County permitting. Requirements, fees, and procedures change; confirm details with the permitting authority before relying on them.