Building permits in Cameron County, Texas
Find the right authority before you build. Cameron County permitting follows Texas law — here is exactly who issues the permit and where to start.
County + cities (mixed)
Cameron County Department of Transportation — Building & Inspections Division
The Cameron County Building & Inspections Division (within the Department of Transportation) processes and issues residential and commercial building permits for the unincorporated areas of Cameron County. Incorporated cities (Brownsville, Harlingen, San Benito, etc.) issue their own permits.
Open the official permit portal →
Building permits for unincorporated areas require a completed application, site plan, construction plans and proof of ownership; contact the Division at [email protected].
Check a home project's permit in Cameron 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 Cameron County, Texas?
Cameron County Department of Transportation — Building & Inspections Division is the permitting authority for Cameron 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 Cameron County?
Permitting is split — cities issue for incorporated areas, the county for unincorporated areas.
What home projects need a permit in Cameron 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 Cameron County?
Use the official permit portal linked above. Most offices accept online submissions; have your plans, site information, and contractor details ready before applying.