Flat Texas Gulf coastal prairie with brackish sloughs, cordgrass, and wind-shaped live oaks leaning inland.
Nueces County 2024 IRC as adopted here TDI windstorm area

Barndominium Builders in Nueces County, TX

Everywhere else in Texas the answer is that there is no statewide residential code and you must ask your jurisdiction. On unincorporated land in Nueces County it is different. The whole county sits inside the designated catastrophe area, and inside that boundary the Texas Department of Insurance sets a standard by rule: since 1 April 2026 a windstorm certificate of compliance is issued against the 2024 International Residential Code or the 2024 International Building Code. That is not a building permit, and it does not displace a city's own adopted code. What it decides is eligibility, because the certificate is what makes a finished building insurable by the Texas Windstorm Insurance Association, and a coastal lender will very likely want that cover in place. Out on the county's farmland, where no building code reaches the house at all, it is the only construction standard that attaches to it.

Nueces County at a glance

County
Nueces County
Population
352,992
Where we build
Corpus Christi, San Patricio County, Aransas County

ZIPs 78380, 78343, 78330, 78339, 78351, 78347, 78373, 78415 and more

Site visits
Site walks booked county-wide, Corpus Christi included
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Building conditions in Nueces County

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 Nueces County , Texas . BUILD CONDITIONS NUECES COUNTY, TXNueces County2024 IRCADOPTED RESIDENTIAL CODE2024 IRCThis jurisdiction publishes no design wind speed. It is settled in writing with the authority overyour parcel before the frame is ordered.ZONING · NO COUNTY ZONINGFive thousand square feet, less any…Local Government Code section 233.153(d)(2) does not authorise acommissioners court to adopt zoning. What does control lot size is…COUNTY DRIVEWAY PERMIT$550.00Nueces County Public Works fee for an access driveway on acounty-maintained road. Plat application fees are $990 under one…WHO ISSUES THE PERMITNueces County Department of Public W…Nueces County Courthouse, 901 Leopard Street, Corpus Christi, TX78401, (361) 888-0490. The County Engineer is the Floodplain…
Build conditions for Nueces County, drawn from the sourced facts on this page. Every figure above is cited in the quick-facts panel below, with its source and vintage.
The 2024 IRC governs insurability here, by state rule
Structures in the designated catastrophe area constructed, repaired or added to on and after 1 April 2026 must comply with the 2024 editions of the International Residential Code and International Building Code to be eligible for catastrophe property insurance

28 Texas Administrative Code section 5.4013, adopted by the Commissioner of Insurance; Texas Department of Insurance, Adopted Building Codes, tdi.texas.gov/wind/adopted-codes.html

Apply before you begin, not after you finish
A person must give the Department of Insurance written notice of an intent to construct a structure for which coverage is sought before the person begins to construct it, and the sequence runs WPI-1 application, then a WPI-2-BC-8 inspection verification for work begun on or after 1 April 2026, then the WPI-8 certificate

Texas Insurance Code section 2210.2515(b); Texas Department of Insurance windstorm forms listing, forms PC350 and PC439

Miss the inspections and it is engineer only
A certificate for completed construction is issued only on a licensed professional engineer's sealed design or sealed post-construction evaluation report. The association issued its own completed-construction certificate, the WPI-8-C, but accepted applications for it only between 1 January 2017 and 31 May 2020. An existing WPI-8-C is still accepted; a new one cannot be obtained

Texas Insurance Code section 2210.2515(c); Texas Windstorm Insurance Association, Windstorm Certification and Coverage and Eligibility pages, twia.org

The coast is carved out of the engineer exemption by name
The private dwelling exemption from the Engineering Practice Act does not apply to a person providing engineering design or inspection services necessary to comply with windstorm certification standards for a residential dwelling

Texas Occupations Code section 1001.056(c)(1)

The county's freeboard is zero
New residential construction in an area of special flood hazard must have the lowest floor elevated to or above the base flood elevation, with certification by a registered professional engineer, architect or land surveyor, and no additional height is required above it

Nueces County Flood Damage Prevention Ordinance, Article 5 Section B(1), adopted and effective 29 August 2022

Fifty-seven percent of the ground is shrink-swell clay
Victoria clay covers 306,451 of the 534,760 mapped acres that are not open water or urban land, a smectitic Vertisol running 51 percent clay at the surface and 61 percent at depth with linear extensibility of 14.5 to 18.7 through the profile

USDA NRCS Soil Data Access, SSURGO survey area TX355, mapunit and chorizon tables

Also worth knowing before you build in Nueces County

The whole county is in, and here is how that was settled
Three current sources agree: the Department of Insurance states that except for Harris County the entire county of each of the counties on its map is part of the windstorm program and that these areas have not changed with the adoption of the new building codes; the statute lists Nueces among the fourteen first tier coastal counties at section 2210.003(4)(K); and the association's own eligibility page names all fourteen, Nueces included

Texas Department of Insurance, Adopted Building Codes, page dated 23 April 2026; Texas Insurance Code section 2210.003(4)(K); Texas Windstorm Insurance Association, Coverage and Eligibility

The old county map sheets are not the source
The Department of Insurance files its per-county sheets under legacy designated catastrophe area county maps for the 2003 and 2006 building codes, and states that it produces maps for general informational use only with no warranty as to specific accuracy or completeness

Texas Department of Insurance, catastrophe maps index and Legacy designated catastrophe area county maps

The state sets no zone wind speed any more
The Department of Insurance says the required wind speed must be determined for each structure based on the location of the structure, using web-based tools such as the ASCE 7 Hazard Tool, and that most of the designated catastrophe areas are now located within the windborne debris region. Nueces County itself has adopted no code and so publishes none, though a city inside the county may publish its own figures in the edition it adopted

Texas Department of Insurance, Adopted Building Codes, tdi.texas.gov/wind/adopted-codes.html

The 110, 120 and 130 mph figures are legacy
Those three zone speeds sat in the rule for the 2006 code and applied to construction begun between 1 January 2008 and 31 August 2020; the department indexes the county sheets that still show them under legacy maps for the 2003 and 2006 building codes

28 Texas Administrative Code section 5.4011; Texas Department of Insurance, Legacy designated catastrophe area county maps

Two agents, and one of them is a water district
TCEQ's authorised agent search returns four records for Nueces County: the county for the entire county, administered by the Corpus Christi-Nueces County Health District; Nueces County WCID 4 for the City of Port Aransas; the City of Aransas Pass; and TCEQ Region 14 in Corpus Christi. Corpus Christi itself is not listed as an agent, so under TCEQ's own instruction it falls to the county's programme

TCEQ On-Site Sewage Facility Authorized Agent Search, county code 178, tceq.texas.gov/permitting/ossf/aa_search.html

The septic form asks for the house and the building separately
The health district's application has a line for residence size in square feet under single family residence and bedrooms, and a separate line for building size in square feet, and sets a $500 application fee for all locations

Corpus Christi-Nueces County Public Health District, Application For On-Site Sewage Facility, form dated 22 December 2025

The county does issue a construction permit on the islands
A dune protection permit is required for all excavation or construction that might damage or remove sand dunes or dune vegetation on North Padre or Mustang Islands within 1,000 feet landward of mean high tide, reviewed by the Beach Management Advisory Committee and approved or denied by the Commissioners Court, valid three years

Nueces County Coastal Parks, What is a Dune Protection Permit or Master Planned Development, nuecesbeachparks.com; Texas Natural Resources Code chapter 63

A single family house counts as small-scale construction
The county defines small-scale construction as construction activity less than or equal to 5,000 square feet or habitable structures less than or equal to two stories high, and says single family habitable structures are typical of this type of construction

Nueces County Coastal Parks, What is a Dune Protection Permit or Master Planned Development, nuecesbeachparks.com

The flood order names a pair of statutes, and one is not the Water Code
The Commissioners Court recites that the Legislature has in both Texas Local Government Code section 240.901 and Texas Water Code section 16.315 delegated the responsibility of local governmental units to adopt regulations designed to minimize flood losses

Nueces County Flood Damage Prevention Ordinance, Article 1 Section A, adopted 29 August 2022

In the V zones the house goes on pilings
In coastal high hazard areas, generally Mustang Island and Padre Island, new construction must sit landward of the reach of mean high tide, be elevated on pilings and columns anchored against wind and water loads acting simultaneously, and have the space below the lowest floor free of obstruction or built with non-supporting breakaway walls

Nueces County Flood Damage Prevention Ordinance, Article 5 Section F; Nueces County Public Works, Floodplain Development

Sand at one end of the county, clay at the other
The Galveston and Mustang fine sands of the barrier islands run 93 to 94 percent sand and as little as 0.9 percent clay, while Victoria clay west of the city runs above 51 percent clay from the surface down

USDA NRCS Soil Data Access, SSURGO survey area TX355, component and chorizon tables

The surface lies on the sandy loam too
Orelia fine sandy loam covers 33,207 acres and reads 8 percent clay for the first five inches, then 31 percent in the subsoil below it

USDA NRCS Soil Data Access, SSURGO survey area TX355, chorizon table

There is no percolation test in Texas
Soil is classified by texture class, Ia sandy and gravelly down to IV silty clay and clay, with loading rates running from above 0.50 to 0.10 gallons per square foot per day, and Class Ia soils do not provide adequate treatment of wastewater through soil contact

30 Texas Administrative Code chapter 285, including section 285.33(b)(4)(D)

Nineteen in twenty residents live inside a city
The county's incorporated places held 335,770 of its 352,992 residents in 2025, leaving roughly 17,200 people in the unincorporated county, and Port Aransas grew 29 percent since 2020 while Corpus Christi fell 0.3 percent

U.S. Census Bureau Vintage 2025 population estimates, co-est2025-alldata.csv and sub-est2025.csv

Fewer than thirty people to the square mile out there
Nueces County has 839.3 square miles of land, of which roughly 645 lie outside any city limit, and those 645 square miles hold about 17,200 people

U.S. Census Bureau 2024 Gazetteer county and place land areas with Vintage 2025 population estimates

Climate zone 2A
Nueces County is climate zone 2A, hot-humid, on both the pre-2021 and the 2021 IECC and IRC county maps, so the insulation specification does not change with the edition here

Pacific Northwest National Laboratory PNNL-33270, county climate zone data files

A licensed plumber is required even without a building code
The rural plumbing exemption expressly excludes plumbing performed in conjunction with new construction

Texas Occupations Code section 1301.052

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 Nueces County

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

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Where we build around Nueces County

Nueces 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 Nueces County service area, covering Nueces 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 Nueces County 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.

Corpus Christi

Nueces County
San Patricio County

San Patricio County
Aransas County

Aransas County

Building in Nueces County: common questions

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

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Is there really a building code in unincorporated Nueces County?
There is a code standard, but it does not arrive the way people expect, so it is worth stating carefully. The whole county sits inside the designated catastrophe area, and 28 Texas Administrative Code section 5.4013 requires structures constructed, repaired or added to on and after 1 April 2026 to comply with the 2024 International Residential Code or the 2024 International Building Code in order to be eligible for catastrophe property insurance. That is a Department of Insurance rule about insurability, not a building code adopted by a local government, and it does not override anything a city has adopted. Inside a coastal city both are live at once: the city's own edition governs its building permit, and the 2024 edition governs eligibility. Out on unincorporated county land, where nothing published by Nueces County names a residential code at all, the insurance rule is the only construction standard that reaches the house. Either way there is no county permit, no county plan review and no county inspector, and the enforcement is simply that without a certificate the association will not write the policy.
How is the certificate actually obtained?
In three steps, and the first one comes before the slab. Texas Insurance Code section 2210.2515(b) requires written notice to the Department of Insurance of an intent to construct before the person begins to construct, which is the WPI-1 application, department form PC350. During the work an appointed qualified inspector or a department inspector files an inspection verification; for a project begun on or after 1 April 2026 that form is the WPI-2-BC-8, department form PC439. The department then issues the WPI-8 certificate of compliance. There is a second, shorter path for a finished building using the WPI-2E application and a WPI-8-E certificate, but it is not the cheap way round, and the department says plainly that because it is more difficult to inspect a completed structure for building code compliance, it may cost more.
What happens if the windstorm inspections are skipped?
The certificate for completed construction becomes an engineer-only exercise. Under Texas Insurance Code section 2210.2515(c) the department issues it only where a professional engineer licensed by the Texas Board of Professional Engineers and Land Surveyors has designed the improvement and sealed the design, or has completed and submitted a sealed post-construction evaluation report. There is a third kind of certificate, the WPI-8-C, which the association issued itself, and it is worth being precise about it because it is easy to read either way and be wrong. The association accepted applications for WPI-8-Cs only between 1 January 2017 and 31 May 2020, so a new one cannot be obtained for a house built today. An existing one has not stopped counting: the association's current eligibility page still lists properties certified by it alongside the department's WPI-8 and WPI-8-E. On the insurance side, Texas Insurance Code section 2210.258(b) says the association may not insure a structure until a certificate of compliance has been issued for it, and the association's own wording is that without a certificate it lacks evidence that the structure conforms to applicable building codes, and it may be considered uninsurable and ineligible for coverage with the association.
Is windstorm insurance legally required?
No, and it is worth being precise about this. The Department of Insurance states that windstorm insurance is not required by law in Texas, but that if you live near the coast and have a mortgage your lender will likely require you to have windstorm coverage. The association is also a market of last resort rather than a first stop: the department's own eligibility test is that you have asked an insurance company for wind and hail coverage and been turned down. Private carriers are not bound by the certificate rule; the association is. And there is a timing trap worth knowing, again in the department's words: you cannot get an association policy if there is a hurricane in the Gulf of Mexico.
Does a barndominium here need an engineer?
For the windstorm work, yes, and it is in statute rather than in practice. Texas Occupations Code section 1001.056 exempts a private dwelling from the licensing requirements of the Engineering Practice Act, which is why most Texas houses need no engineer. Subsection (c)(1) then switches that exemption off for a person providing engineering design or inspection services necessary to comply with windstorm certification standards for a residential dwelling. The legislature carved the coast out by name in 2009. That does not mean an engineer designs your kitchen; it means the windstorm design and the windstorm inspection cannot be done under the private-dwelling exemption. For a clear-span steel frame with wide door openings it lands the same way for a second reason, which is that the prescriptive tables in the residential code are written for conventional light-frame construction and a rigid frame is designed, not looked up.
What does the county's own flood ordinance require?
Less height than people expect, and that is worth knowing before you budget fill. Article 5 Section B(1) of the Nueces County Flood Damage Prevention Ordinance requires new residential construction to have the lowest floor, including basement, elevated to or above the base flood elevation, certified to the Floodplain Administrator by a registered professional engineer, architect or land surveyor. There is no additional freeboard above that. In the shallow flooding zones, Section D asks for the base flood elevation or the highest adjacent grade at least as high as the depth number on the flood map, and at least two feet where no depth number is given. The ordinance was adopted and made effective on 29 August 2022 and adopts the Flood Insurance Study for Nueces County dated 13 October 2022 by reference. The County Engineer is the Floodplain Administrator, and a Development Permit is required to ensure conformance.
Is flood the same question as wind here?
No, and conflating them is the most common mistake on this coast. They are different perils, different instruments and different bodies. Wind runs through the Department of Insurance rule and the certificate of compliance. Flood runs through the county's own order, adopted under Texas Local Government Code section 240.901 and Texas Water Code section 16.315, and administered by the County Engineer against FEMA's maps. The one place they meet is the county's own text: in coastal high hazard areas, Article 5 Section F requires the pile or column foundation to be anchored against wind and water loads acting simultaneously, and says the wind loading values used shall be those required by applicable State or local building standards. Inside the catastrophe area, that points straight back at the insurance rule.
Who handles the septic permit in Nueces County?
TCEQ's authorised agent search returns four records for the county. The county holds the delegation for the entire county and it is administered by the Corpus Christi-Nueces County Health District. Nueces County Water Control and Improvement District No. 4 is the authorised agent for the City of Port Aransas, which is unusual and matters, because Port Aransas is where the county is actually growing. The City of Aransas Pass and TCEQ Region 14 in Corpus Christi make up the rest. TCEQ's own instruction on that page is to work through it in order: whether you are in a subdivision within 2,000 feet of a lake or river, then whether you are inside a city's limits, and if the city is not listed, contact the county. The health district sits at 1702 Horne Road in Corpus Christi on (361) 826-7223, and its application fee is $500 for all locations.
Does the shop bay enlarge the drainfield?
Not at state level, and the local form is consistent with that rather than stricter. TCEQ sizes a single family system off the number of bedrooms or the living area of the home, whichever lands higher, and living area is not total structure area. The Corpus Christi-Nueces County Public Health District's own application asks for residence size in square feet on the single family residence line and for building size in square feet on a separate line, so it collects both figures rather than folding the shop into the house. What it does not do is publish a sizing rule, so settle the design flow with the district before the footprint is fixed. The same form also commits the applicant to 30 Texas Administrative Code section 285.31 selection criteria including flood hazard, which on this coast is rarely academic.
Where in Nueces County is there actually land to build on?
West and south of Corpus Christi, mostly. About 335,770 of the county's 352,992 residents live inside a city, which leaves roughly 17,200 in the unincorporated county, and the buildable acreage is the farmland along the Robstown, Banquete, Agua Dulce, Petronila, Driscoll and Bishop corridor rather than anywhere near the bayfront. Corpus Christi itself is down 0.3 percent since 2020 and is not where a barndominium goes. The one fast-growing place is Port Aransas, up 29 percent, and that is a different build entirely: barrier-island sand, coastal high hazard V zone rules, a dune protection permit from the Commissioners Court, and a beachfront construction certificate on top. Decide which of those two counties you are building in before you choose a plan.
Do I need any permit from the county at all?
Probably more than one, and none of them is a building permit. In a special flood hazard area you need a Floodplain Development Permit from Public Works, and the application form's attachment list includes a septic system permit and a ground well water supply permit, so the septic is settled first. An access driveway onto a county-maintained road must be approved by Public Works, at a published fee of $550. A new house in the rural county needs an Address Verification Form so the emergency dispatch record is right. Dividing land into two or more lots of five acres or less for residential purposes triggers platting, at $990 under an acre, $1,430 for one to five acres and $1,870 above five. And within 1,000 feet of mean high tide on Mustang or Padre Island you need a dune protection permit approved by the Commissioners Court itself. None of these is a code review: no plans examiner reads your framing and no inspector calls.

Building in Nueces County?

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