Building permits in Brazoria County, Texas
Find the right authority before you build. Brazoria County permitting follows Texas law — here is exactly who issues the permit and where to start.
County + cities (mixed)
Brazoria County Floodplain / Building Permits Office
Brazoria County issues building permits for new or relocated structures over 200 square feet and major additions in the unincorporated areas of the county, through its Floodplain/Building Permit office. Incorporated cities (Angleton, Pearland, Lake Jackson, Alvin, etc.) issue their own permits.
Open the official permit portal →
An on-site sewage facility (OSSF/septic) permit is required before a building permit issues; coastal projects may also require windstorm (WPI) certificates.
Check a home project's permit in Brazoria County, Texas
Select a project to see its Texas permit rule. Whether the county or your city issues it depends on incorporation status — see the authority note above.
Texas
Exact permit fees are set by the local building department. WikEst shows the published or code-based range where one exists, linked to its official source — verify the final amount at the source before budgeting.
🏠 Accessory Dwelling Unit (ADU) permit fee in Texas
Permit requiredRestrictedcity authority
Permit fee range
Permit and plan-review fees set by the city. Verify with the local building department.
Typical timeline
Varies by city; 2–8 weeks.
Setback
Per local zoning.
Exempt if
Allowed only where the local ordinance permits.
Exempt criteria: None — where allowed, ADUs require a permit.
Texas has no statewide ADU mandate; ADUs are allowed only where the local ordinance permits (e.g., Austin, Houston, Dallas). Zoning, size caps, and parking rules apply.
Official sources: City of Austin Development Services — Residential Plan Review · City of Dallas Building Inspection — Permit FAQs
Representative cities for Texas: Houston, Dallas, Austin.
All 20 project fee ranges in Texas
Official-source ranges where published; “By local jurisdiction” means no flat fee is published and the amount is set case by case.
| Project | Permit? | Authority | Fee range | Go / no-go |
|---|---|---|---|---|
| 🏠 Accessory Dwelling Unit (ADU) | yes | city | Permit and plan-review fees set by the city. Verify with the local building department. | restricted |
| 🪵 Deck / Porch | conditional | city | Set by the city — typically a flat plus valuation-based fee. Verify with the city building department. | allowed |
| 🧱 Fence / Wall | conditional | city | Houston: fee per city schedule where a permit is required. Verify locally. | allowed |
| 🛖 Shed / Outbuilding | conditional | city | No fee under the exemption; a permit fee applies if over the threshold. | allowed |
| 🪜 Basement Finish | yes | city | Valuation-based building permit fee. Verify with the city building department. | allowed |
| 🚗 Garage / Carport | yes | city | Valuation-based fee. Verify with the city building department. | allowed |
| ☀️ Rooftop Solar PV | yes | city | Electrical permit fee set by the city. Verify with the city building department. | allowed |
| 🌡️ HVAC Replacement | yes | city | Mechanical permit fee set by the city. Verify with the city building department. | allowed |
| 🍳 Kitchen Remodel | yes | city | Building + electrical + plumbing permit fees. Verify with the city building department. | allowed |
| 🛁 Bathroom Remodel | yes | city | Building + plumbing + electrical fees. Verify with the city building department. | allowed |
| 🏗️ Room Addition | yes | city | Valuation-based building permit; impact fees may apply. Verify with the city building department. | allowed |
| 🪟 Window / Door Replacement | conditional | city | Permit fee if changing the opening; in-kind swap is often exempt. | allowed |
| 🏘️ Roof Replacement | conditional | city | Roofing permit fee set by the city. Verify with the city building department. | allowed |
| 🅿️ Driveway / Parking Pad | conditional | city | Private flatwork generally needs no building permit; floodplain/curb-cut work may be fee-based. | allowed |
| 🏊 Swimming Pool / Spa | yes | city | Building permit + electrical; fee set by the city. Verify with the city building department. | allowed |
| 🧱 Retaining Wall | conditional | city | No fee under the exemption; a permit applies if over the threshold. | allowed |
| 💥 Demolition / Teardown | yes | city | Demolition permit fee set by the city/county; verify locally. | allowed |
| 🚰 Septic System | yes | county | Septic permit fees set by the local authorized agent (county/city) under TCEQ rules; verify locally. | allowed |
| 🔌 EV Charger | conditional | city | Electrical permit fee set by the city; verify locally. | allowed |
| ⚡ Standby Generator | yes | city | Electrical (and often mechanical/gas) permit fee set by the city; verify locally. | allowed |
Permit cheat-sheet (Texas rules)
| Project | Permit? | Authority | Typical fee | Timeline | Go / No-Go | Key notes |
|---|---|---|---|---|---|---|
| 🏠 Accessory Dwelling Unit (ADU) | Permit required | city | Permit and plan-review fees set by the city. Verify with the local building department. | Varies by city; 2–8 weeks. | Restricted | Texas has no statewide ADU mandate; ADUs are allowed only where the local ordinance permits (e.g., Austin, Houston, Dallas). Zoning, size caps, and parking rules apply. Exempt: Allowed only where the local ordinance permits. |
| 🪵 Deck / Porch | Conditional | city | Set by the city — typically a flat plus valuation-based fee. Verify with the city building department. | 1–4 weeks. | Generally allowed | Attached decks or decks over 30 in above grade require a building permit. Exempt: Decks ≤30 in above grade are exempt (Houston IBC 105.2; Dallas same). |
| 🧱 Fence / Wall | Conditional | city | Houston: fee per city schedule where a permit is required. Verify locally. | Houston: ~10 days for fence permits. | Generally allowed | Height limits and front-yard rules are set by each city; HOA covenants may also apply. Exempt: Houston: fences >8 ft or any masonry/concrete fence require a permit. Dallas: >6 ft (or >4 ft in a front yard) require a permit. |
| 🛖 Shed / Outbuilding | Conditional | city | No fee under the exemption; a permit fee applies if over the threshold. | Same day / Over-the-Counter where required. | Generally allowed | Larger sheds or those with plumbing/electrical need a building permit. Exempt: Dallas: utility building <200 sq ft needs no permit; generally a one-story detached structure ≤120 sq ft is exempt under the IRC. |
| 🪜 Basement Finish | Permit required | city | Valuation-based building permit fee. Verify with the city building department. | 2–6 weeks. | Generally allowed | Uncommon in Texas; finishing a basement requires egress and permits. Exempt: N/A |
| 🚗 Garage / Carport | Permit required | city | Valuation-based fee. Verify with the city building department. | 2–8 weeks. | Generally allowed | A new garage requires a building permit; Austin reviews to the 2024 IRC with local amendments. Exempt: N/A |
| ☀️ Rooftop Solar PV | Permit required | city | Electrical permit fee set by the city. Verify with the city building department. | Often streamlined (1–3 days via SolarAPP+ where adopted); 2–4 weeks otherwise. | Generally allowed | Rooftop PV requires an electrical permit; many Texas cities use SolarAPP+ for streamlined review. Exempt: N/A |
| 🌡️ HVAC Replacement | Permit required | city | Mechanical permit fee set by the city. Verify with the city building department. | 1–2 weeks. | Generally allowed | Furnace, AC, or heat-pump replacement requires a mechanical permit and inspection. Exempt: N/A |
| 🍳 Kitchen Remodel | Permit required | city | Building + electrical + plumbing permit fees. Verify with the city building department. | 2–6 weeks. | Generally allowed | Moving plumbing/electrical or walls triggers permits. Exempt: N/A |
| 🛁 Bathroom Remodel | Permit required | city | Building + plumbing + electrical fees. Verify with the city building department. | 2–6 weeks. | Generally allowed | Plumbing/electrical relocation requires permits. Exempt: N/A |
| 🏗️ Room Addition | Permit required | city | Valuation-based building permit; impact fees may apply. Verify with the city building department. | 3–8 weeks. | Generally allowed | Expanding the footprint requires full plan review and zoning compliance. Exempt: N/A |
| 🪟 Window / Door Replacement | Conditional | city | Permit fee if changing the opening; in-kind swap is often exempt. | Same day / Over-the-Counter where required. | Generally allowed | Enlarging openings or adding egress windows requires a permit. Exempt: In-kind same-size replacement generally needs no permit. |
| 🏘️ Roof Replacement | Conditional | city | Roofing permit fee set by the city. Verify with the city building department. | 1–3 weeks. | Generally allowed | A full re-roof generally requires a roofing permit; structural deck damage requires a building permit. Exempt: Dallas: re-roof of a single-family/duplex dwelling if value ≤$500 needs no permit. |
| 🅿️ Driveway / Parking Pad | Conditional | city | Private flatwork generally needs no building permit; floodplain/curb-cut work may be fee-based. | Varies. | Generally allowed | Houston requires a floodplain development permit if the work is in a regulated floodplain (Chapter 19); a curb cut or right-of-way work needs a separate permit. Exempt: Driveway not over 30 in above grade and off the right-of-way is generally exempt (Dallas). |
| 🏊 Swimming Pool / Spa | Permit required | city | Building permit + electrical; fee set by the city. Verify with the city building department. | 3–8 weeks. | Generally allowed | In-ground and most above-ground pools need a permit and barrier/fencing per local code. Exempt: N/A |
| 🧱 Retaining Wall | Conditional | city | No fee under the exemption; a permit applies if over the threshold. | 2–4 weeks if required. | Generally allowed | Taller walls or walls supporting a surcharge (driveway, structure, slope above) require design and a permit. Exempt: Retaining walls not over 4 ft (bottom of footing to top) are exempt (Dallas; IRC 105.2). |
| 💥 Demolition / Teardown | Permit required | city | Demolition permit fee set by the city/county; verify locally. | — | Generally allowed | A full teardown or major strip-out requires a demolition (building) permit. Texas is home-rule: cities issue the permit under their locally adopted code, while unincorporated areas are permitted by the county. Demolition permits often require utility disconnects and, for older homes, asbestos/lead clearance before work begins. |
| 🚰 Septic System | Permit required | county | Septic permit fees set by the local authorized agent (county/city) under TCEQ rules; verify locally. | — | Generally allowed | New or replacement onsite wastewater (septic) systems require a permit under TCEQ Chapter 285 (OSSF). The local authorized agent (usually the county) issues the permit after a site evaluation and engineered design; a percolation/soil test is typically required. Verify with your county environmental health or TCEQ regional office. |
| 🔌 EV Charger | Conditional | city | Electrical permit fee set by the city; verify locally. | — | Generally allowed | A home EV charging station needs an electrical permit (dedicated 240V circuit and wall unit) issued by the city under its locally adopted code. Texas has no single statewide EV-permitting mandate, so review time and any fast-track process vary by city. Work must meet the NEC. |
| ⚡ Standby Generator | Permit required | city | Electrical (and often mechanical/gas) permit fee set by the city; verify locally. | — | Generally allowed | A permanently installed standby generator with a transfer switch and fuel (gas/propane) line requires electrical and often mechanical/gas permits, plus inspection. Setback, noise, and carbon-monoxide rules may apply, and HOAs may restrict installation. Verify with the city building department. |
Frequently asked questions
Who issues building permits in Brazoria County, Texas?
Brazoria County Floodplain / Building Permits Office is the permitting authority for Brazoria County. Permitting is split — cities issue for incorporated areas, the county for unincorporated areas. Start at the official portal linked above.
Do I go to the county or my city for a building permit in Brazoria County?
Permitting is split — cities issue for incorporated areas, the county for unincorporated areas.
What home projects need a permit in Brazoria County?
The same project types shown in the cheat-sheet above (ADU, deck, fence, shed, solar, and more) — rules follow Texas state law. Whether the county or your city issues it depends on your property's incorporation status.
How do I apply for a permit in Brazoria County?
Use the official permit portal linked above. Most offices accept online submissions; have your plans, site information, and contractor details ready before applying.