Building Permit Requirements in Texas

Most Texas cities require a building permit for decks that are more than 30 inches above finished grade or exceed a certain square footage, typically 200 square feet. Ground-level decks that don't exceed these thresholds are often exempt, though you may still need to meet setback requirements. The 30-inch height rule is common across cities that have adopted the IRC, since the code ties guardrail and structural requirements to that measurement.

Houston and Dallas both enforce the 30-inch rule, but their permitting systems work differently. Houston's process runs through the Houston Permitting Center, and the city's lack of traditional zoning means there's no separate use permit or zoning review for a deck project. You apply for the building permit, and that's it. Dallas has conventional zoning, so your deck project may need both a building permit and a zoning review, particularly if the deck is close to property lines or in a zoning overlay district. This dual review can add time to the Dallas process that Houston avoids.

Deck permits in Texas generally require a site plan showing the deck's location on your lot, construction drawings with joist sizes, beam spans, and post spacing, and details about the footing design and ledger board connection to the house. Fees range from under $100 for small projects to several hundred dollars for larger decks. Review times typically run 5 to 15 business days. Texas has a shallow frost line (6 to 12 inches in most areas), so footing depth requirements are less demanding than in northern states, but the soil conditions, particularly expansive clay in the Dallas-Fort Worth area, can require special foundation design.

Fence permit requirements in Texas depend heavily on the city and the height of the fence. Most cities allow fences up to 6 feet tall in rear and side yards without a permit, but front yard fences are often restricted to 4 feet or less. Fences exceeding these height limits typically need a permit, and fences made of masonry or stone may trigger additional structural requirements because of the weight and wind load involved.

San Antonio is more lenient than many Texas cities, requiring permits only for fences over 8 feet tall. Austin enforces tighter rules, particularly in certain residential zones where front yard fences above 3.5 feet need approval. Austin also applies additional restrictions in its historic districts and some neighborhood conservation combining districts, where fence materials and design may need review by a historic preservation officer. If you live in a neighborhood with a Homeowners Association (HOA), expect additional restrictions on materials, color, and style regardless of what the city allows.

In general, a standard 6-foot wood privacy fence in a backyard can be built without a permit in most Texas cities. But always check for setback requirements, easements, and utility line locations before you dig. Call Texas 811 to have underground utilities marked. Fence permits, when required, are inexpensive, typically $25 to $75, and the review process is usually just a few days.

Small storage sheds are one of the most commonly exempt structures in Texas. Most cities exempt sheds that are 120 square feet or smaller, single-story, and used only for storage with no plumbing or electrical connections. Once a shed exceeds the local size threshold or includes utilities, a permit is usually required. Some cities set the exemption at 100 square feet, while others go up to 200, so the threshold varies and checking with your local building department before buying or building a shed is worthwhile.

Fort Worth exempts accessory structures under 120 square feet that are single-story and don't include electrical or plumbing. The city still requires that exempt sheds meet setback requirements, so you can't place a small shed right on the property line. Houston follows a similar pattern for the building code exemption, but the city's floodplain regulations add a layer that many other cities don't have. If your Houston property sits in a FEMA-designated flood zone, even a small shed may need an elevation certificate or floodplain development permit. Houston's extensive floodplain mapping, strengthened after Hurricane Harvey, means a significant number of residential properties are affected.

If your shed does require a permit, expect to submit a site plan showing the shed's location relative to property lines and other structures, along with basic construction details. Permit fees for sheds are usually modest, often under $100. Even for exempt sheds, setback requirements typically apply. Most cities require at least 3 to 5 feet between an accessory structure and the property line, though the specific distance varies.

A simple ground-level patio, whether concrete, pavers, or flagstone, typically does not require a building permit in most Texas cities. Patios become permit-worthy when they include a roof or cover structure, are elevated above grade, or involve electrical or plumbing work such as outdoor kitchens or gas fire pits. A covered patio or patio with a permanent roof is treated as a structural addition in most jurisdictions and requires a building permit with plan review.

Dallas requires a permit for any covered patio or pergola structure attached to the house, and the project goes through both building code and zoning review. The zoning review checks setbacks, lot coverage, and whether the covered structure pushes the property over its maximum impervious surface or building coverage allowance. Austin takes a similar approach, with covered patios subject to impervious cover limits that can be especially tight in the city's watershed protection zones. An uncovered patio in Austin may still trigger requirements if it pushes the property's total impervious cover beyond the allowed percentage, which varies by watershed.

Fees for patio permits depend on the scope of the project. A basic covered patio might cost $75 to $200 in permit fees, while a more complex outdoor living space with electrical and plumbing could run higher. Review times generally fall in the 5 to 15 business day range. Texas's hot climate makes covered outdoor living spaces extremely popular, so building departments in the major cities are well-practiced at reviewing these projects.

Building a garage in Texas almost always requires a building permit, whether it's attached or detached. Garages are substantial structures that involve foundations, framing, roofing, and often electrical work, so they far exceed the size and complexity thresholds that exempt smaller projects. The IRC's fire separation requirements for attached garages, including fire-rated drywall and a self-closing door between the garage and living space, apply in all Texas cities that have adopted the code.

Houston requires a building permit for any new garage construction. Because the city enforces strict floodplain regulations, a garage in a flood zone may need to meet additional elevation and construction standards, including potentially raising the finished floor above the base flood elevation. San Antonio also requires permits for garages and applies setback rules that dictate how close the structure can be to property lines and neighboring buildings. Both cities require detailed plans including a site plan, foundation design, structural drawings, and electrical layouts.

Permit fees for garages typically range from $200 to $500 or more depending on the size and the city's fee structure. Some cities calculate fees based on the estimated construction cost or total square footage. Inspections at multiple stages, including foundation, framing, electrical rough-in, and final, are standard. The timeline from application to permit issuance is usually 2 to 4 weeks for a standard residential garage in a major Texas city.