Flat green Gulf Coastal Plain near Houston with a slow bayou, live oaks draped in Spanish moss, and cumulus building overhead.
Harris County 2024 IRC as adopted here TDI windstorm area

Barndominium Builders in Pasadena, TX

Pasadena is one of five Harris County cities the Texas Department of Insurance names in the windstorm catastrophe area, and the only city in the Houston ring where the question even arises. It is also a city of about 148,500 people that has been shrinking, built out along the Ship Channel refinery corridor from Red Bluff to Fairmont Parkway, with almost no unplatted acreage left inside the limits. So this page does two jobs. It answers the windstorm question precisely, because the test has two limbs and most of Pasadena fails one of them. And it says plainly that a five-acre barndominium site is not a Pasadena purchase — it is a Liberty, Chambers or Montgomery County purchase, thirty to sixty minutes out, where the land is and where the county has no residential building code at all. Inside the city, the honest work is a replat, an infill house, or a shop building on a lot you already own.

Pasadena at a glance

County
Harris County
Population
148,539
Where we build
Pasadena, Houston, League City, Pearland

ZIPs 77502, 77503, 77504, 77505, 77506, 77507

Site visits
We meet you on the parcel, anywhere in Pasadena or Harris County
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Building conditions in Pasadena

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 Pasadena , Harris County, Texas : design wind speed Set from the site's own location under ASCE 7. BUILD CONDITIONS PASADENA, TXHarris County2024 IRCDESIGN WIND SPEEDSet from the site's…Pasadena's adopting ordinance makes no change to Table R301.2 and publishes no wind speed of itsown; the adopted 2024 IRC carries its own wind provisions. TDI likewise directs that the required…ZONING · NONE — PASADENA IS A NON-ZONED MUNIC…No zoning minimum; deed restrictions…The city's own Official Zoning Letter, signed by the Director ofPlanning, states that Pasadena is a non-zoned municipality and that…BUILDING PERMIT FEE, NEW ONE- AND TWO-FAMILY$0.20 per square foot under roof, mi…City of Pasadena published fee schedule. Residential plan reviewadds $0.10 per square foot for work of 500 square feet or more unde…WHO ISSUES THE PERMITCity of Pasadena Permit DepartmentFirst floor, City Hall, 1149 Ellsworth Drive, Pasadena TX 77506.713-475-5575, permitdept@pasadenatx.gov. Counter and self-serve… Design criteria are filled in by the jurisdiction under Table R301.2 and are confirmed per parcel before any drawing is sealed.
Build conditions for Pasadena, drawn from the sourced facts on this page. Every figure above is cited in the quick-facts panel below, with its source and vintage.
Windstorm area — both limbs must be met
Harris County is the one partial county in the Texas windstorm catastrophe area. TDI's rule is conjunctive: a structure qualifies only if it is east of State Highway 146 and inside the city limits of Seabrook, La Porte, Shoreacres, Pasadena or Morgan's Point. Pasadena is on that list of five, but the highway crosses only the far eastern end of the city, out past Bayport — City Hall sits about thirteen miles west of it. Which side of 146 a parcel falls on decides the answer, and it is worth settling before you buy.

Texas Department of Insurance, Harris County windstorm map and Adopted Building Codes page (tdi.texas.gov/wind)

What the certificate is worth — a statutory prohibition
Insurance Code section 2210.258(b) states that TWIA may not insure a structure in the catastrophe area until a certificate of compliance has been issued for it. That binds the insurer, not just the owner. TWIA's own wording is that without a certificate a structure may be considered uninsurable and ineligible for coverage with TWIA. TDI says expressly that windstorm insurance is not required by law in Texas — but that a coastal lender will likely require it.

Texas Insurance Code sec. 2210.258(b); TWIA Windstorm Certification page; TDI, What is windstorm insurance

Pasadena builds to the 2024 IRC
Code of Ordinances section 9-62 adopts the 2024 International Residential Code for one- and two-family dwellings, by Ordinance No. 25-198 adopted 21 October 2025. Section 9-60 adopts the 2024 IBC for commercial and multifamily work and sends one- and two-family dwellings to the IRC by exception. The city's Permits & Licenses page states the 2024 codes take effect 2 February 2026 — a newer edition than most of the Houston ring.

City of Pasadena Code of Ordinances secs. 9-60 and 9-62 (Ord. No. 25-198, 10-21-25); pasadenatx.gov Permits & Licenses

Every foundation is engineer-sealed
Pasadena's amendment to IRC section R401.2 reads: every foundation and/or 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 broader than the statewide expansive-soil trigger — in Pasadena it applies to every new one- and two-family foundation, with no soil test to argue about.

City of Pasadena Code of Ordinances sec. 9-63(18), amending IRC R401.2 (Ord. No. 25-198, 10-21-25)

Pasadena has no zoning
The city's Official Zoning Letter, signed by the Director of Planning, states that Pasadena is a non-zoned municipality; the Planning Department's own FAQ adds that the city therefore has no zoning map. Land use is governed by the building and platting ordinances and by recorded deed restrictions, which the city is not a party to and which staff will not interpret. Deed restrictions are searched at the Harris County Clerk.

City of Pasadena Official Zoning Letter and Planning Department FAQs (pasadenatx.gov, Planning)

Published permit fees
New one- and two-family construction is charged at $0.20 per square foot of area under roof, with a $50 minimum, plus a $10 application fee. Residential plan review adds $0.10 per square foot where the work is 500 square feet or more under roof, and nothing below that. A failed inspection carries a $50 re-inspection fee, and starting work before the permit issues doubles the fee and adds $25.

City of Pasadena published fee schedule, Building permit department fees (pasadenatx.gov/2002/Fee-Schedule)

Also worth knowing before you build in Pasadena

The 1,200 square foot line on shops and barns
Pasadena's fee schedule sets a threshold that matters for this build type: residential garages, shops, barns, storage and other utility structures of 1,200 square feet or less may be built to residential standards, while anything over 1,200 square feet must be built to commercial standards for fire separation and distance, design loads and structural, mechanical, electrical and plumbing requirements — while still being usable only for private residential purposes.

City of Pasadena published fee schedule, Building fee schedule, residential (pasadenatx.gov/2002/Fee-Schedule)

Contractor registration is a city matter, not a state licence
Texas issues no licence for a residential builder. Pasadena runs its own register instead: all building and remodel contractors must register with the Permit Department for $75 initially and $75 a year, valid for one calendar year from registration.

City of Pasadena published fee schedule, item 24, annual building contractor registration fee

Residential sprinklers deleted
Pasadena adopted the 2024 IRC and then deleted Section R309 Automatic Sprinkler Systems in its entirety, and struck R317.5 Fire Sprinklers as well. It also raised the garage separation from a half-inch to five-eighths-inch fire-rated board with full encapsulation, and requires a termite treatment verification form before the concrete foundation is poured.

City of Pasadena Code of Ordinances sec. 9-63(10), (11), (14) and (17) (Ord. No. 25-198, 10-21-25)

Climate zone 2A, and it does not move with the edition
Harris County is climate zone 2A on both the pre-2021 and the 2021/2024 county maps, so Pasadena's insulation and envelope zone is the same whichever edition is applied. Eight Texas counties changed zone between those two maps; Harris is not one of them, which makes this one of the few large Texas markets where the zone question does not turn on the adopted edition.

U.S. DOE / PNNL-33270, Guide to Determining Climate Zones by County, September 2022

Inside the windstorm sliver, the code is newer still
For the part of Pasadena east of SH 146, a second code regime applies on top of the city's: under 28 TAC section 5.4013, structures in the designated catastrophe area constructed on and after 1 April 2026 must comply with the 2024 IRC or 2024 IBC to be eligible for catastrophe property insurance. The coast is the only Texas regime that updates on a code cycle rather than sitting on a frozen statutory date.

28 TAC sec. 5.4013, adopted by commissioner order; TDI Adopted Building Codes page

A city with no frontier left
Pasadena covers 43.7 square miles of land and holds roughly 148,500 people, about 3,400 to the square mile, and the population has fallen around 1.9 percent since 2020. The city is bounded by Houston to the west, the Ship Channel and the refinery corridor to the north, and Deer Park, La Porte and Seabrook to the east; its eastern third is the Bayport terminal district. What remains vacant is platted subdivision lots and industrial tracts, not acreage. Buyers wanting five to twenty acres go north and east — Liberty, Chambers and Montgomery counties — where no county residential building code applies at all.

U.S. Census Bureau TIGERweb, Pasadena city (GEOID 4856000), land area 113,159,689 sq m; Census population estimates

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 Pasadena

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 Harris 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 Pasadena 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 Harris 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 Harris County. Tell us what you want to build and we will draw it to them.

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Where we build around Pasadena

Harris 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 Pasadena service area, covering Harris 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 Pasadena 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.

Houston

Harris County
League City

Galveston County
Pearland

Brazoria County

Building in Pasadena: common questions

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

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Does a barndominium in Pasadena need a windstorm certificate?
Only if the parcel meets both limbs of the test. The Texas Department of Insurance places part of Harris County in the designated catastrophe area, and it does so by naming five cities — Seabrook, La Porte, Shoreacres, Pasadena and Morgan's Point — and adding a second condition: the structure must be east of State Highway 146 as well as inside those city limits. Most of Pasadena lies west of 146, so most of the city is outside the windstorm program entirely. The eastern edge is not. This is a parcel-level question, and it is worth settling before you buy, not after.
What happens if a building in the qualifying area never gets certified?
Texas Insurance Code section 2210.258(b) says the association may not insure a structure in the catastrophe area until a certificate of compliance has been issued for it. That is a prohibition on TWIA, not advice to the owner. TWIA's own wording is that without a certificate a structure may be considered uninsurable and ineligible for coverage with TWIA. Windstorm insurance is not required by law in Texas — TDI says so directly — but a lender on a coastal mortgage will normally require it, and TWIA is the market of last resort when private carriers decline.
How does the windstorm certificate actually get issued?
TDI issues it, and the sequence starts before construction does. The owner or builder files a WPI-1 application with TDI; the inspection verification form in the WPI-2 family is submitted by an appointed qualified inspector or a TDI inspector as the work goes up; TDI then issues the WPI-8 certificate. Statute requires written notice of the intent to build before the work begins. There is a separate, engineer-only route for completed construction, and TDI notes that inspecting a finished structure is harder and may cost more — which is the argument for getting the inspector in before anything is covered up.
Which building code does Pasadena enforce?
The 2024 International Residential Code for one- and two-family dwellings, adopted at section 9-62 of the Code of Ordinances by Ordinance No. 25-198 on 21 October 2025, with the city's amendments at section 9-63. The city's Permits & Licenses page gives 2 February 2026 as the effective date for the 2024 codes. Commercial and multifamily work goes to the 2024 IBC. The Permit Department at 1149 Ellsworth Drive issues the permit and inspects the work.
Does Pasadena have zoning, and what governs where a shop building can go?
Pasadena is a non-zoned municipality — the city says so in its own Official Zoning Letter, and its Planning Department confirms there is no zoning map. What governs instead is the building code, the setback and platting rules in Chapter 9 and the subdivision ordinance, and recorded deed restrictions. Those restrictions are private agreements the city is not a party to and will not interpret; you search them at the Harris County Clerk. One city rule worth knowing early: a shop, barn or garage over 1,200 square feet must be built to commercial standards, even though it stays in private residential use.
Do I need an engineer for the foundation?
In Pasadena, yes, always. The city amended IRC R401.2 to require that every foundation and footing regulated by the code be designed and sealed by a Texas-registered engineer. That goes further than the statewide rule, which only removes the private-dwelling exemption where the soil is expansive. And in the windstorm sliver east of SH 146 a second requirement stacks on top: Occupations Code section 1001.056(c)(1) removes the private-dwelling exemption for engineering design and inspection work needed to meet windstorm certification standards. A clear-span steel frame is engineered work in any case.
Is there anywhere in Pasadena to actually put a barndominium?
Rarely, and it is honest to say so. Pasadena is a built-out Ship Channel city of about 148,500 people whose population has fallen since 2020; what remains vacant is platted subdivision lots and industrial land, not acreage. Inside the city the realistic projects are an infill house on an existing lot, a replat to combine lots, or a shop building behind a home you already own. If the plan is five, ten or twenty acres, the land is north and east of here — Liberty, Chambers and Montgomery counties — and in the unincorporated parts of those counties there is no residential building code at all, which changes how a project gets inspected and financed.

Building in Pasadena?

Start with the plan. Tell us what you want to build and we will draw it, then confirm what Harris 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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