Gently rolling Blackland Prairie grassland with deep dark cracking clay soil in the foreground and post oak along a fence line.
Tarrant County 2021 IRC as adopted here

Barndominium Builders in Fort Worth, TX

In Fort Worth the question "which code applies" has two answers. Ordinance 25383-03-2022 adopted the 2021 International Residential Code, effective 1 April 2022 — then the city cut that code's energy chapter down to a single pointer and aimed the pointer at the 2015 International Energy Conservation Code, adopted six years earlier by Ordinance 22520-12-2016. Framing, foundations and termite protection follow the 2021 book and climate zone 2A; insulation and envelope follow the 2015 book and climate zone 3A. Fort Worth is also the fastest-growing Texas city over a million, up 11.3% since 2020, and its zoning ordinance still keeps one-family districts at one acre and two and a half acres for what it calls rural-style development. A split code, real acreage inside the limits and a five-mile ETJ reaching into five counties make this a different build from Arlington's, twelve miles east.

Fort Worth at a glance

County
Tarrant County
Population
1,028,117
Where we build
Fort Worth, Arlington, Parker County, Johnson County, Dallas

ZIPs 76102, 76103, 76104, 76105, 76106, 76107, 76108, 76109 and more

Site visits
We come to the land — Fort Worth and the rest of Tarrant County alike
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Building conditions in Fort Worth

What actually changes from one Texas jurisdiction to the next: who issues the permit, whether the residential code is enforced there at all, what the structure has to be engineered to, and what the ground is like. These are the numbers your drawings have to satisfy.

Build conditions for Fort Worth , Tarrant County, Texas : design wind speed 105 mph. BUILD CONDITIONS FORT WORTH, TXTarrant County2021 IRCDESIGN WIND SPEED105 mphThree-second gust, filled into IRC Table R301.2(1) by the city at § 7-62. Ten miles an hour belowthe 115 mph Dallas and Arlington publish.ZONING · ONE-FAMILY A-2.5A, A-43, A-21, A-10…2.5 acres in A-2.5A, 1 acre in A-43Zoning Ordinance §§ 4.700 and 4.701 describe both as zones forrural-style development of a one-family dwelling on each lot. The A…WATER AND WASTEWATER IMPACT FEES$2,824 water plus $2,680 wastewater…Adopted by Ordinance 27745-06-2025 on 10 June 2025, for buildingpermits issued 1 October 2025 through 30 September 2026; the…WHO ISSUES THE PERMITCity of Fort Worth Development Servi…City Hall, 100 Fort Worth Trail, Fort Worth, TX 76102. Permits andcontractor registration 817-392-2222. Platting and extraterritorial…
Build conditions for Fort Worth, drawn from the sourced facts on this page. Every figure above is cited in the quick-facts panel below, with its source and vintage.
Adopted residential code
The 2021 International Residential Code, adopted by Ordinance 25383-03-2022, passed 8 March 2022 and effective 1 April 2022. It sits at § 7-61 of the city code, and § 7-62 replaces the code's whole administrative chapter with the Fort Worth Building Administrative Code.

City of Fort Worth Code of Ordinances ch. 7 art. IIIA §§ 7-61 and 7-62, read 1 September 2026 — https://codelibrary.amlegal.com/codes/ftworth/latest/ftworth_tx/0-0-0-8127

The energy code is six years older than the building code
Fort Worth cut the 2021 IRC's energy chapter down to one sentence — buildings shall be designed in accordance with the International Energy Conservation Code — and marked the rest deleted. The energy code it points at is the 2015 IECC, adopted by Ordinance 22520-12-2016 and effective 1 January 2017. So insulation and envelope work off climate zone 3A while framing, foundations and termites work off zone 2A.

City of Fort Worth Code of Ordinances §§ 7-41 and 7-62, read 1 September 2026 — https://codelibrary.amlegal.com/codes/ftworth/latest/ftworth_tx/0-0-0-5698

Design wind speed
105 mph, three-second gust, filled in by the city itself. Dallas and Arlington publish 115 mph. Arlington is twelve miles away and in the same county, and it is a full ten miles an hour higher — which is exactly why a design figure has to come from the jurisdiction you are actually building in.

City of Fort Worth Code of Ordinances § 7-62, IRC Table R301.2(1) as filled in, read 1 September 2026 — https://codelibrary.amlegal.com/codes/ftworth/latest/ftworth_tx/0-0-0-8127

Termite rating "very heavy" — and the section that answers it is relaxed
Fort Worth publishes the heaviest termite band there is in its own Table R301.2(1), and in the same ordinance opens IRC R318.1 to other industry accepted methods of termite protection and adds an exception: where chemicals or other methods are undesirable to the owner or buyer, an exposed exterior surface complying with the city's own added Figure R401.3, Drainage and Termite Protection, may be provided instead. The trade is chemical treatment for an inspectable detail — grade falling six inches in the first ten feet away from the foundation, and foundation left visible where tubing would show.

City of Fort Worth Code of Ordinances § 7-62, IRC §§ R318.1 and R401.3 as amended and Figure R401.3 as added, read 1 September 2026 — https://codelibrary.amlegal.com/codes/ftworth/latest/ftworth_tx/0-0-0-8127

Every foundation gets a Texas-registered engineer
Fort Worth's amendment to IRC R401.2 reads that every foundation and footing, or any size addition to an existing post-tension foundation, regulated by this code shall be designed and sealed by a Texas-registered engineer. That is a flat municipal rule, not the expansive-soil trigger — it applies whatever the soil does. A related amendment to R403.1.1 requires a soil report before any presumptive bearing value above 1,500 psf may be used.

City of Fort Worth Code of Ordinances § 7-62, IRC §§ R401.2 and R403.1.1 as amended, read 1 September 2026 — https://codelibrary.amlegal.com/codes/ftworth/latest/ftworth_tx/0-0-0-8127

Contractor registration: $168.75 a year, and the trades are exempt from it
Fort Worth registers Building Contractors as a named category and charges $168.75 a year, renewing annually. State-licensed plumbing, electrical and mechanical contractors are exempt from the fee — so the people paying it are the ones for whom no Texas state licence exists to hold. Property owners doing the work on their own homestead are outside the requirement entirely.

City of Fort Worth Building Administrative Code §§ 118.1, 118.2.1 and 118.3 (https://codelibrary.amlegal.com/codes/ftworth/latest/ftworth_tx/0-0-0-5697) and the city's Contractor Registration page (https://www.fortworthtexas.gov/departments/development-services/permits/contractor-registration), both read 1 September 2026

Also worth knowing before you build in Fort Worth

The rest of the city's Table R301.2(1)
Ground snow load 5 lb/ft². Frost line depth 6 inches. Seismic design category A. Weathering moderate. No wind-borne debris zone, no special wind region, no topographic effects. Air freezing index 150 and mean annual temperature 64.9 °F. Fort Worth also fills in the Manual J block Arlington deletes: elevation 686 feet, outdoor winter design 25 °F, outdoor summer design 99 °F.

City of Fort Worth Code of Ordinances § 7-62, IRC Table R301.2(1) and the Manual J design criteria table as filled in, read 1 September 2026 — https://codelibrary.amlegal.com/codes/ftworth/latest/ftworth_tx/0-0-0-8127

The blower-door test cannot be run by your builder
Fort Worth's energy article requires every one- and two-family dwelling to be tested for air and duct leakage whatever compliance path it took, and adds that the tester must be certified, must be an independent third-party entity, and may not be employed by or hold any financial interest in the company that built the house. A trade-off table lets a house under 6,000 square feet with two to six bedrooms sit at four air changes per hour instead — but that table's first line specifies conventional wood framing.

City of Fort Worth Code of Ordinances § 7-42, IECC §§ R102.1.2, R402.4.1.2 and R403.3.3 as amended and Table R402.4.1.2 as added, read 1 September 2026 — https://codelibrary.amlegal.com/codes/ftworth/latest/ftworth_tx/0-0-0-5698

Five miles out, and into five counties
The city puts it plainly: its extraterritorial jurisdiction is the unincorporated land within five miles of the city limits, and its Subdivision Ordinance applies out there. Fort Worth publishes interlocal agreements with five counties for that ring — Tarrant, Denton, Parker, Wise and Johnson. Platting reaches into all five. Building codes do not: Texas courts have held that a home-rule city lacks authority to enforce its building codes beyond its corporate limits, while confirming it can make a landowner plat.

City of Fort Worth Extraterritorial Jurisdiction page, read 1 September 2026 (https://www.fortworthtexas.gov/departments/development-services/etj); Collin County v. City of McKinney, No. 05-17-00546-CV (Tex. App.—Dallas, 10 May 2018); Town of Lakewood Village v. Bizios, 493 S.W.3d 527 (Tex. 2016)

A big city that still zones for acreage
Fort Worth's zoning ordinance keeps two large-lot one-family districts and describes both in its own words as being for rural-style development of a one-family dwelling on each lot: A-2.5A at a minimum lot size of two and one-half acres, and A-43 at one acre. The Agricultural (AG) district is not the same thing — a dwelling there has to be clearly incidental to the operation of a farm, ranch, orchard, truck garden or nursery, so AG acreage generally needs rezoning before it becomes a homesite.

City of Fort Worth Zoning Ordinance (Code of Ordinances Appendix A) §§ 4.700, 4.701 and 4.200, read 1 September 2026 — https://codelibrary.amlegal.com/codes/ftworth/latest/ftworth_tx/0-0-0-34935 and https://codelibrary.amlegal.com/codes/ftworth/latest/ftworth_tx/0-0-0-33459

Water and wastewater impact fees
On a standard 5/8-inch residential meter the city charges $2,824 in water impact fees and $2,680 in wastewater impact fees for a building permit issued between 1 October 2025 and 30 September 2026, rising to $2,990 and $2,838 for permits issued on or after 1 October 2026. Council adopted the schedule by Ordinance 27745-06-2025 on 10 June 2025. A tract on a private well and a septic system does not meet these at all.

City of Fort Worth, Current Impact Fees, read 1 September 2026 — https://www.fortworthtexas.gov/impact-fees/water-impact-fees/current-fees

The fastest-growing million-person city in Texas
1,028,117 people as of 1 July 2025, up 11.3% from 923,653 in 2020. Of the four Texas cities over a million, the next fastest is San Antonio at 7.7%; Houston grew 4.3%, Austin 4.2% and Dallas 2.0%. Fort Worth's growth is going somewhere, and on the western and northern edges it is going onto land.

U.S. Census Bureau, Vintage 2025 sub-county population estimates, sub-est2025.csv — https://www2.census.gov/programs-surveys/popest/datasets/2020-2025/cities/totals/sub-est2025.csv

An excavator grading a compacted building pad on a cleared lot, with survey stakes and a drainage swale visible.
Below the slab

The expensive surprises are in the ground, not the building

What moves a Texas budget is usually below grade, and it is soil rather than rock: shrink-swell clay. The Blackland Prairie and the Gulf Coast clays move enough between a wet season and a dry one to drive the foundation design across the state's largest markets, which is why several DFW cities require an engineer's seal on the foundation of every new house. Those are the same conditions that decide whether a septic field passes its soil and site evaluation, so the grading plan, the foundation and the drainfield get resolved together rather than one at a time. We price the dirt before we price the building.

What we build in Fort Worth

All nine of our services — kits, custom plans, post-frame and steel construction, site preparation, permitting and engineering, through to turnkey builds — are available across Tarrant County. What a project costs depends far more on the parcel than on square footage, so we work from your land rather than from a rate card.

See what we build

What a build looks like

Three stages every Fort Worth project passes through, from a raw parcel to a finished home. Site work first, because that is where the budget is decided.

Aerial view of an undeveloped rural lot with cleared grass, a live oak and cedar elm treeline, and a pale gravel access track.
Stage one

The parcel

Zoning, setbacks, flood zone and utility access get checked before anything is drawn.

An excavator grading a compacted building pad on a cleared lot, with survey stakes and a drainage swale visible.
Stage two

Pad and permit

Clearing, grading and a compacted pad, while the submittal works through Tarrant County.

A finished barndominium at dusk with warm interior lighting glowing through its large windows.
Stage three

Frame to finish

Shell erected and dried in, then systems, insulation and interior finish through to CO.

Those are the rules for Tarrant County. Tell us what you want to build and we will draw it to them.

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Where we build around Fort Worth

Tarrant County and the rural land around it. The buildable acreage for a project this size usually sits outside the city limits, which is frequently what changes who issues your permit.

Our Fort Worth service area, covering Tarrant County and the surrounding rural acreage. This map marks the territory we serve, not a branch location.

Keep reading

The questions that usually come next once you know what Fort Worth allows.

Barndominium Cost Guide

Sourced per-square-foot ranges by tier and by size, with a calculator built on the same figures.

Read it

Is It Legal in Texas?

Classification, zoning, the HOA gate, and why "nonresidential farm building" does not cover a home.

Read it

How Long Does It Take?

Census build-duration data, and what actually sets the permit clock where you are building.

Read it

Nearby areas we build in

Others we cover in this part of Texas. The permitting authority, the adopted design criteria and the zoning can all differ from one to the next.

Arlington

Tarrant County
Parker County

Parker County
Johnson County

Johnson County
Dallas

Dallas County

Building in Fort Worth: common questions

8 questions we get asked most often about building in Fort Worth. If yours is not on the list, ask it directly.

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Which building code applies to a barndominium in Fort Worth?
Two of them, and that is not a mistake. The 2021 International Residential Code applies, adopted by Ordinance 25383-03-2022 and effective 1 April 2022. But Fort Worth deleted that code's energy chapter down to a single line pointing at the International Energy Conservation Code, and the energy code the city has adopted is the 2015 edition, put in place by Ordinance 22520-12-2016 back on 1 January 2017. Framing, foundations, footings, roof and termite protection are 2021 IRC questions. Insulation, air sealing, windows and ductwork are 2015 IECC questions. They are answered from different books.
Is Fort Worth climate zone 2A or 3A?
Both, depending on which adopted code you are reading. Tarrant County moved from 3A to 2A when the climate-zone map was redrawn for the 2021 editions. Fort Worth's building code is a 2021 edition, so it carries the newer map and Fort Worth is 2A for everything that code governs. Fort Worth's energy code is a 2015 edition, so it carries the older map and Fort Worth is 3A for insulation and envelope. Anyone quoting you a bare "Fort Worth is zone 2A" and pricing insulation off it is quoting the wrong half. Arlington, twelve miles away, adopted the 2021 IRC and the 2021 IECC together and is 2A for both.
Do I need an engineer for the foundation?
In Fort Worth, yes, and the city says so directly rather than leaving it to the soil. Its amendment to IRC R401.2 states that every foundation and footing regulated by the code shall be designed and sealed by a Texas-registered engineer. That is broader than the statewide rule, which only removes the engineering exemption once a slab sits on expansive soil — much of Tarrant County does, but in Fort Worth you do not have to reach that argument. A separate amendment requires a soil report before any presumptive bearing value above 1,500 psf can be used.
Does Fort Worth require chemical termite treatment?
No, and this is one of the more unusual things in its ordinance. The city publishes the heaviest termite rating the table allows — "very heavy" — and then relaxes the section that responds to it. Fort Worth's version of IRC R318.1 accepts other industry accepted methods of termite protection beyond the six the model code lists, and adds an exception: where chemicals or other methods of protection are undesirable to the owner or buyer, an exposed exterior surface complying with the city's own added Figure R401.3, Drainage and Termite Protection, may be provided instead. The owner makes that election. What they get is a physical detail an inspector can look at — grade falling six inches in the first ten feet away from the foundation, and foundation surface left exposed where mud tubes would show — rather than a chemical barrier they never see. Note the flip side of the same table: "very heavy" is the rating that bars foam plastic below grade at the foundation.
I am buying land in Fort Worth's ETJ. Whose rules apply?
The city's extraterritorial jurisdiction is the unincorporated land within five miles of the city limits, and Fort Worth publishes interlocal agreements covering it with five counties — Tarrant, Denton, Parker, Wise and Johnson. Out there the city's Subdivision Ordinance still reaches you: it can require you to plat. Its building code does not. Texas courts have held that a home-rule city has no authority to enforce its building codes or building inspection requirements beyond its corporate limits, while confirming that it can require platting. So the building-code question moves to the county — and a Texas county has no general building-code power in its unincorporated area unless its commissioners court has adopted an order under Local Government Code Chapter 233, Subchapter F. Which county you are in decides the answer, so establish the county and read the title commitment before you buy.
Does a builder need a licence in Fort Worth?
There is no Texas state licence for a residential contractor to hold — the state has not licensed home builders since the Texas Residential Construction Commission was wound up, and nothing replaced it. What Fort Worth does have is registration. Anyone pulling a building permit must hold a current Contractor Registration with Development Services, Building Contractor is one of the named categories, and it costs $168.75 a year. The wrinkle is that the state-licensed trades — plumbing, electrical, mechanical — are exempt from the fee, so the registration is really aimed at the one role Texas does not license at all. A property owner doing the work on their own homestead is outside the requirement.
Is there anywhere in Fort Worth you can actually build a barndominium on land?
Yes, which makes Fort Worth unlike most of the cities around it. Its own zoning ordinance still carries two large-lot one-family districts written for what the city calls rural-style development — A-2.5A at a two-and-a-half-acre minimum lot and A-43 at one acre — and there is still undeveloped ground on the western and northern edges as the city pushes into Parker and Wise counties. One trap worth knowing: land zoned Agricultural (AG) is not automatically a homesite. Under § 4.200 a one-family dwelling in the AG district has to be clearly incidental to the operation of a farm, ranch, orchard, truck garden or nursery, so AG acreage usually needs rezoning to a residential district first. If the acreage you want is beyond the city limits, Parker, Wise and Johnson counties are where most Fort Worth buyers end up looking.
Who tests the house at the end, and what will it be tested against?
Fort Worth requires every one- and two-family dwelling to be tested for air and duct leakage regardless of which compliance path it followed, and it requires the tester to be certified, independent, and neither employed by nor financially interested in the company that built the house. The targets come from the 2015 energy code as the city amended it. The city's own trade-off table allows four air changes per hour for a dwelling under 6,000 square feet with between two and six bedrooms, against a package of R13 plus R3 walls, a ceiling above R49, fenestration below 0.32 U and 0.25 SHGC — but the first component line of that table specifies conventional wood framing, so a steel-framed house should have its compliance path settled with Development Services early rather than at final inspection.

Building in Fort Worth?

Start with the plan. Tell us what you want to build and we will draw it, then confirm what Tarrant County will actually let you put on the parcel and what wind load it has to meet. That conversation costs nothing.

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