Adopted edition
IRC 2021 (statewide reference; Home Rule cities may differ)
Effective
State · TX
Texas building codes at a glance.
Home-rule state — no statewide residential code. WPI-8 certification governs coastal first-tier counties. Cities adopt IRC editions independently; major metros mostly on IRC 2018 or 2021.
TX Texas
IECC zones 1A, 2A, 2B, 3A, 3B · ASCE 7 design wind 100–180 mph
Adoption model
Home rule
Permits issued: Local
Coverage status
Indexed
Parcel layer + adopted-edition library + amendment overlay all live.
Climate zones (IECC)
1A · 2A · 2B · 3A · 3B
Drives R-value, fenestration U-factor, and air-leakage envelope rules.
Design wind speed
100–180 mph
ASCE 7 Risk Category II, 3-second gust at 33 ft. Fastener spec follows.
Special zones
- HVHZ (not applicable)
- WUI (not applicable)
- FEMA SFHA overlays (present)
Compliance track
What's required to build here.
No statewide residential code. Coastal Tier I (TWIA) WPI-8 windstorm certification in 14 first-tier counties. Cities adopt IRC 2018/2021 independently.
Statute reference: www.tdi.texas.gov/wind
Sample counties
How TX varies inside the state.
6 of the highest-volume counties in Texas, with notes on local rules that diverge from the state floor.
§01
Harris (Houston)
WPI-8 region, 130 mph
§02
Galveston
Tier I coastal, 150 mph
§03
Brazoria
Tier I coastal, 150 mph
§04
Cameron (Brownsville)
180 mph design
§05
Travis (Austin)
IRC 2021 + Austin amendments
§06
Dallas
IRC 2018
County directory
All 254 counties in Texas.
Each county page shows the adopted edition, county-level amendments, and permit-office contact.
- Anderson County
- Andrews County
- Angelina County
- Aransas
- Archer County
- Armstrong County
- Atascosa County
- Austin County
- Bailey County
- Bandera County
- Bastrop County
- Baylor County
- Bee County
- Bell
- Bexar
- Blanco County
- Borden County
- Bosque County
- Bowie County
- Brazoria
- Brazos
- Brewster County
- Briscoe County
- Brooks County
- Brown County
- Burleson County
- Burnet County
- Caldwell County
- Calhoun
- Callahan County
- Cameron
- Camp County
- Carson County
- Cass County
- Castro County
- Chambers
- Cherokee County
- Childress County
- Clay County
- Cochran County
- Coke County
- Coleman County
- Collin
- Collingsworth County
- Colorado County
- Comal
- Comanche County
- Concho County
- Cooke County
- Coryell County
- Cottle County
- Crane County
- Crockett County
- Crosby County
- Culberson County
- Dallam County
- Dallas
- Dawson County
- Deaf Smith County
- Delta County
- Denton
- DeWitt County
- Dickens County
- Dimmit County
- Donley County
- Duval County
- Eastland County
- Ector
- Edwards County
- El Paso
- Ellis
- Erath County
- Falls County
- Fannin County
- Fayette County
- Fisher County
- Floyd County
- Foard County
- Fort Bend
- Franklin County
- Freestone County
- Frio County
- Gaines County
- Galveston
- Garza County
- Gillespie County
- Glasscock County
- Goliad County
- Gonzales County
- Gray County
- Grayson County
- Gregg
- Grimes County
- Guadalupe
- Hale County
- Hall County
- Hamilton County
- Hansford County
- Hardeman County
- Hardin County
- Harris
- Harrison County
- Hartley County
- Haskell County
- Hays
- Hemphill County
- Henderson County
- Hidalgo
- Hill County
- Hockley County
- Hood County
- Hopkins County
- Houston County
- Howard County
- Hudspeth County
- Hunt County
- Hutchinson County
- Irion County
- Jack County
- Jackson County
- Jasper County
- Jeff Davis County
- Jefferson
- Jim Hogg County
- Jim Wells County
- Johnson
- Jones County
- Karnes County
- Kaufman County
- Kendall County
- Kenedy
- Kent County
- Kerr County
- Kimble County
- King County
- Kinney County
- Kleberg
- Knox County
- La Salle County
- Lamar County
- Lamb County
- Lampasas County
- Lavaca County
- Lee County
- Leon County
- Liberty County
- Limestone County
- Lipscomb County
- Live Oak County
- Llano County
- Loving County
- Lubbock
- Lynn County
- Madison County
- Marion County
- Martin County
- Mason County
- Matagorda
- Maverick County
- McCulloch County
- McLennan
- McMullen County
- Medina County
- Menard County
- Midland
- Milam County
- Mills County
- Mitchell County
- Montague County
- Montgomery
- Moore County
- Morris County
- Motley County
- Nacogdoches County
- Navarro County
- Newton County
- Nolan County
- Nueces
- Ochiltree County
- Oldham County
- Orange
- Palo Pinto County
- Panola County
- Parker County
- Parmer County
- Pecos County
- Polk County
- Potter
- Presidio County
- Rains County
- Randall
- Reagan County
- Real County
- Red River County
- Reeves County
- Refugio
- Roberts County
- Robertson County
- Rockwall
- Runnels County
- Rusk County
- Sabine County
- San Augustine County
- San Jacinto County
- San Patricio
- San Saba County
- Schleicher County
- Scurry County
- Shackelford County
- Shelby County
- Sherman County
- Smith
- Somervell County
- Starr County
- Stephens County
- Sterling County
- Stonewall County
- Sutton County
- Swisher County
- Tarrant
- Taylor
- Terrell County
- Terry County
- Throckmorton County
- Titus County
- Tom Green
- Travis
- Trinity County
- Tyler County
- Upshur County
- Upton County
- Uvalde County
- Val Verde County
- Van Zandt County
- Victoria
- Walker County
- Waller County
- Ward County
- Washington County
- Webb
- Wharton County
- Wheeler County
- Wichita
- Wilbarger County
- Willacy
- Williamson
- Wilson County
- Winkler County
- Wise County
- Wood County
- Yoakum County
- Young County
- Zapata County
- Zavala County
City directory
36 cities indexed in Texas.
City pages list local amendments, the parent county, and the local permit office.
- Abilene
- Amarillo
- Arlington
- Austin
- Beaumont
- Brownsville
- Carrollton
- College Station
- Corpus Christi
- Dallas
- Denton
- El Paso
- Fort Worth
- Frisco
- Garland
- Grand Prairie
- Houston
- Irving
- Killeen
- League City
- Lubbock
- McAllen
- McKinney
- Mesquite
- Midland
- Odessa
- Pasadena
- Pearland
- Plano
- Round Rock
- San Angelo
- San Antonio
- Sugar Land
- Tyler
- Waco
- Wichita Falls
Working in Texas?
Pull an address-level code packet for any property. SkyCanvass resolves the parcel, looks up the jurisdiction's adopted edition + amendments, and emits a cited packet ready for permit submittal.
For state-vs-state comparisons see the state comparison view, or browse the state directory.
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