In unincorporated Bexar County — the 4th most populous county in Texas — Bexar County Public Works issues permits for unincorporated areas, and the Fire Marshal's Office determines when building permits are required for non-single-family structures. Under Texas law, the county has limited authority over single-family residential construction.
This guide covers permit scope, voluntary residential permits, commercial requirements, and the distinction between county and city jurisdiction.
Bexar County has limited residential permitting authority. Under Texas Local Government Code Chapter 233, the county can require permits for commercial, multi-family, and public-accessible buildings — but NOT for single-family residential construction unless the owner voluntarily seeks one (e.g., for HOA requirements or lending institution CO). The county does not have legal authority to issue a Certificate of Occupancy for homes unless a residential permit was voluntarily obtained.
What requires a building permit in Bexar County?
In unincorporated Bexar County, building permits are required or available for:
Permit required
- Commercial and public-accessible new construction
- Multi-family residential buildings
- Commercial alterations and tenant improvements
- Voluntary residential permits (for HOA or lender requirements)
- Fire protection systems
- On-site sewage facilities
Typically exempt
- Single-family residential (no county requirement — voluntary only)
- Interior cosmetic work
- Agricultural buildings in certain cases
Exemptions are narrow and scope-specific. When unsure, confirm with the building department before starting — see the penalty note below.
Get the permit issued before starting work. Building without one exposes the owner to penalties and stop-work orders. Note that exemption from a building permit does not exempt a project from zoning requirements — confirm edge cases with the building department.
Who handles permitting in Bexar County?
Bexar County Public Works issues permits for unincorporated areas. The Fire Marshal determines when permits are required for structures that are not single-family dwellings.
| Detail | Information |
|---|---|
| Office | Bexar County Public Works |
| Phone | (210) 335-6700 |
| Fire Marshal | Bexar County Fire Marshal's Office |
| Covers | Unincorporated Bexar County only |
| Website | bexar.org/Permits |
| Note | Residential permits are voluntary; commercial/public required |
Contact Public Works for unincorporated area permits. Properties within San Antonio or other incorporated cities must apply through those cities. For commercial projects in unincorporated Bexar County, contact Public Works at (210) 335-6700. Residential owners may voluntarily seek permits for HOA compliance or lender requirements.
Bexar County building permit cost
Bexar County permit fees vary by project type. Contact Public Works at (210) 335-6700 for current fee schedules.
| Fee component | How it works |
|---|---|
| Commercial building permit | Per county fee schedule |
| Voluntary residential permit | Per county fee schedule |
| Fire Marshal review | For non-single-family structures |
| OSSF permit | Separate fee |
| Work-without-permit (commercial) | Penalties + enforcement |
Want a precise number for a specific Bexar County project? Send us the scope and valuation and we'll return a fee estimate alongside a filing timeline.
Bexar County trade permits
State trade licenses apply for all licensed work.
Electrical permits
TDLR-licensed electrician required.
Plumbing permits
TSBPE-licensed plumber required.
Mechanical (HVAC) permits
TDLR-licensed mechanical contractor required.
Miscellaneous & specialty
The Texas Residential Construction Commission historically handled residential builder requirements. Owners or contractors must meet applicable state requirements.
Verify your contractor's license. Texas licenses electricians (TDLR), plumbers (TSBPE), and HVAC/mechanical contractors (TDLR) at the state level — contractors must register with the local municipality before pulling permits. Texas does not issue a statewide general-contractor license. Projects over $50,000 require a TDLR project number and accessibility review. The property owner is responsible for ensuring a permit is obtained. Verify trade licensure at tdlr.texas.gov and tsbpe.texas.gov.
How to get a building permit in Bexar County
Confirm property is in unincorporated area
Verify the property is NOT within San Antonio or another incorporated city.
Determine permit requirement
Commercial/public buildings: required. Single-family residential: voluntary. Contact Public Works or Fire Marshal.
Submit application & plans
Provide the permit application with construction documents.
Review & approval
County reviews for code compliance.
Pay fees & receive permit
Pay all fees.
Schedule inspections
Schedule inspections through Public Works or Fire Marshal.
Inspections in Bexar County
Schedule inspections through Bexar County Public Works. Commercial inspections include structural and fire safety checkpoints.
Address correction notices before requesting a re-inspection; a final inspection and Certificate of Occupancy are required before legal occupancy or use.
Official Bexar County permitting resources
- 🏛️ Bexar County Permits
- 📋 Bexar County Building Permits
- 🪪 TX TDLR — licensing & regulation
- 🪪 TX TSBPE — plumbing board
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Alliance Permitting is a permit documentation and submission company: we prepare your paperwork, file it correctly, and coordinate with the building department through issuance — including preparing private-provider documentation where that option is available. We are not a contractor and do not perform licensed plan review or inspections; that work stays with your team and the jurisdiction.
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More Texas permitting guides
This guide is provided by Alliance Permitting for general informational purposes and reflects publicly available information believed accurate as of June 2026. Permit requirements, fees, and processes change; always confirm current details with the Bexar County Public Works before filing. This is not legal advice.