Do You Need a Permit for a Metal Building in Texas?

Here is how metal building permits in Texas work. Whether you need a permit for a metal carport, garage or barn in Texas depends mostly on one thing: whether your property is inside city limits. This guide explains how it works, what can still apply out in the county, and how to get through the process quickly.

Last checked: November 2026. Rules change, and cities and counties set many of their own, so always confirm with your local office before install day. This guide is general information, not legal advice.

Metal Building Permits in Texas: The Short Answer

• Inside city limits: plan on a building permit. Texas cities use the International Residential Code and set their own permit rules.
• Outside city limits: Texas counties generally do not issue building permits, but you may still need a floodplain permit, and HOA or deed rules still apply.
• Coastal counties: in Brazoria County and the other counties in the Texas Department of Insurance windstorm area, ask your insurance agent about windstorm certification before you build.

Inside City Limits

Texas law makes the International Residential Code (IRC) the building code for residential construction inside city limits, and each city can adopt its own local amendments after a public hearing (Texas Local Government Code §214.212). That is why the rules for a carport in Tyler can differ from the rules in Longview.

Under the model residential code, a one-story detached accessory building of 200 square feet or less does not need a permit. Many cities change that number, and most carports and garages are bigger anyway. A 12×20 carport is already 240 square feet.

Cities usually look at:

• Setbacks from property lines, easements and other buildings
• Height and size limits for accessory buildings
• Wind rating and anchoring
• Where the building sits in relation to your house and driveway

Outside City Limits

Texas counties have limited power over construction in unincorporated areas. Many do not issue building permits at all. Tarrant County, for example, says it does not have the authority to enforce building codes and does not issue building permits.

Some counties do have standards for new houses and duplexes under Local Government Code Chapter 233, Subchapter F. Those rules cover single-family homes and duplexes, not detached carports or garages.

If your land is in a city’s extraterritorial jurisdiction (ETJ), the area just outside city limits, state law limits what the city can regulate. Unless another state law allows it, a city cannot regulate the use, size, height or number of buildings on your tract in its ETJ (Local Government Code §212.003). Subdivision and platting rules can still apply, so ask the city if you are not sure where your property falls.

Permits That Can Still Apply

• Floodplain permit. If any part of your site is in a FEMA flood zone, communities in the National Flood Insurance Program must require a permit for new construction there (44 CFR 60.3). Look up your address on the FEMA Flood Map Service Center and call your local floodplain administrator. This applies in the county as well as in town, wherever the county takes part in the National Flood Insurance Program.
• HOA and deed restrictions. Many subdivisions limit building size, color, height or placement, even outside city limits. Get written approval before you order.
• Coastal windstorm certification. The Texas Department of Insurance windstorm program covers Aransas, Brazoria, Calhoun, Cameron, Chambers, Galveston, Jefferson, Kenedy, Kleberg, Matagorda, Nueces, Refugio, San Patricio and Willacy counties, plus La Porte, Morgan’s Point, Pasadena, Seabrook and Shoreacres in Harris County. To get TWIA wind and hail coverage there, new structures must be built and inspected to TDI’s standards. We serve parts of Brazoria County, such as Alvin and Pearland, so if you insure through TWIA, ask your agent before you build.
• Buried utility lines. Ground anchors go into the soil, so have lines marked before install day. Texas811 asks you to contact them at least two working days before digging.

What to Have Ready

• Building size (width × length × height) and type: open carport, partly enclosed or fully enclosed
• A simple site plan with property lines, your house, and the distance from the new building to each
• Engineered drawings for your building (we provide these)
• Your anchor type and surface: concrete, asphalt, gravel or dirt. See our anchors guide.
• Your HOA approval letter, if you have an HOA

Bring the size and location when you first call your permit office. Most offices can tell you in one call whether you need a permit and what to send.

How We Help With Permits

We provide the engineered drawings most permit offices ask for. Our 14-gauge frames are rated for winds up to 120 mph, and our 12-gauge frames up to 140 mph with certified anchors. Some areas call for a higher rating, so tell us what your permit office requires. Learn more in our wind and snow load guide.

Have a permit question? Call (903) 234-8922 and press 2 for support, scheduling and permits. When your permit is in hand, our site prep guide shows how to get ready for install day.

Who to Call About Metal Building Permits in Texas

If your property is…	Start with
Inside city limits	The city’s building or permits office
In the county, outside city limits	The county floodplain administrator or county engineer (for floodplain and driveway questions)
In a city’s ETJ	The city’s planning office (for platting questions)
In an HOA	Your HOA’s architectural committee
In a TDI coastal county and insured by TWIA	Your insurance agent

Building in another state? See our permit guides for Oklahoma, Arkansas, Kansas, Louisiana, Mississippi, or the general permit guide.

See where we install on our Texas service area page.

Sources

• Texas Local Government Code §214.212 (municipal residential code)
• Texas Local Government Code §212.003 (ETJ limits)
• Texas Local Government Code §233.153 (county residential standards)
• Tarrant County: Guidelines for Development in Unincorporated Areas
• Texas Department of Insurance: Windstorm inspections, general questions
• Texas811: FAQ
• 44 CFR 60.3 (floodplain management permits)