Tall pines in the East Texas Piney Woods with a sandy track cutting through green understorey.
Henderson County No county building code

Barndominium Builders in Henderson County, TX

Henderson County is lake country, and that changes who you deal with. On unincorporated land there is no county residential building code, no county building permit and no county building inspector: the county's own hazard mitigation plan answers BUILDING CODE with a flat no and records no full-time building official. What stands in its place is a stack of separate authorities, and near the water the most important one is not the county at all. Within 2,000 linear feet of the Cedar Creek Reservoir flood pool, the Tarrant Regional Water District is the TCEQ-authorized agent for septic systems, under an order TCEQ approved in 2011. Inside that band TRWD requires every system to be designed by a registered sanitarian or a professional engineer and permits systems on tracts of any size, and land platted since the order needs two acres rather than one where the water comes from a private well. Below the 325.00 foot contour TRWD also holds a purchased flood easement and runs its own construction permit. Move inland and the county's septic office takes over.

Henderson County at a glance

County
Henderson County
Population
88,595
Where we build
Athens, Smith County, Van Zandt County, Tyler

ZIPs 75751, 75752, 75148, 75143, 75156, 75124, 75147, 75163 and more

Site visits
On-site visits across Henderson County, Athens and the land beyond it
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Building conditions in Henderson 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 Henderson County , Texas . BUILD CONDITIONS HENDERSON COUNTY…Henderson CountyNO COUNTY BUILDING…ADOPTED RESIDENTIAL CODENO COUNTY BUILDING…This jurisdiction publishes no design wind speed. It is settled in writing with the authority overyour parcel before the frame is ordered.ZONING · UNDEFINEDThere is no county zoning in unincorporated Henderson County, andLocal Government Code section 233.153(d)(2) would not authorise it…WHO ISSUES THE PERMITHenderson County Development & Flood…100 E Tyler Street, Room 302, Athens, TX 75751, (903) 677-7242. Thisoffice handles plats, replats, the development questionnaire and…
Build conditions for Henderson 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.
No county building code
The county's own hazard mitigation plan answers BUILDING CODE with NO in its regulatory capabilities table, and lists no full-time building official among its personnel

Henderson County Hazard Mitigation Plan, Tables 5-1 and 5-2, Henderson County Office of Emergency Management

A water district, not the county, permits septic near the lake
Within 2,000 linear feet of the Cedar Creek Reservoir flood pool the Tarrant Regional Water District is the TCEQ-authorized agent for on-site sewage facilities; the county serves the rest of the unincorporated area and Athens serves its own city limits

TCEQ Authorized Agent search, Henderson County (county code 107); TCEQ Order approving the Tarrant Regional Water District Order for Cedar Creek Reservoir, issued 8 April 2011, section 6

Every septic system near the lake needs a designer
TRWD requires all on-site sewage facilities in its regulated area to be designed by a registered professional sanitarian or a professional engineer, and requires 1.0 acre on a public water supply or 2.0 acres on a private well for tracts platted after the order took effect

Tarrant Regional Water District Order for Cedar Creek Reservoir, section 10(A) and 10(D), adopted 21 December 2010

A flood easement over the shoreline band
The conservation level of Cedar Creek Lake is 322.00 feet msl and the 100 year flood level is 325.00; the water district purchased a flood easement covering the property between those two elevations, and a district permit is required for any structure at or below 325.00

Tarrant Regional Water District, Cedar Creek Lake Improvement Permit Guidelines

Two feet of freeboard in the floodplain
New residential construction in a special flood hazard area must have its lowest floor, including any basement, elevated to two feet above the base flood elevation, certified by an engineer, architect or land surveyor

Flood Damage Prevention Ordinance for Henderson County, Texas, Article 5 Section B(1), approved 2 March 2010

The ground splits almost exactly in half
At about two feet down, 185,066 acres of the county carry 40 percent clay or more while 184,875 acres carry under 8 percent; the same county holds heavy clay and deep sand in nearly equal measure

USDA-NRCS Soil Data Access, SSURGO survey area TX213 Henderson County, component and horizon tables

Also worth knowing before you build in Henderson County

Ten acres buys you nothing near the reservoir
The water district's order says all on-site sewage facilities in its regulated area must be approved and permitted by the district regardless of tract size, and adds that this includes tracts larger than ten acres

Tarrant Regional Water District Order for Cedar Creek Reservoir, section 10(C)

County set-back lines are real
No new building may sit closer than 25 feet from the edge of the right-of-way of any public county road, or 50 feet from a major highway, which includes any state or federal highway

Henderson County Subdivision Regulations (2024) section 3.10, adopted under Texas Local Government Code section 233.032

The electric meter is an enforcement point
No utility may provide water, sewer, gas or electric service to property within a subdivision unless the owner supplies the utility with a certificate of approval or a certificate of exemption from the Commissioners Court

Henderson County Subdivision Regulations (2024) section 1.2(c)

A plat exemption does not switch off the rest
The county's own certificate of legal exemption warns in capitals that even where an exemption applies, flood damage prevention, driveway culverts, OSSF and TCEQ permitting and lot size compliance, TxDOT and 9-1-1 addressing all still apply

Henderson County Subdivision Regulations (2024), Appendix T, Certificate of Legal Exemption

Wells: registration, not acreage
The Neches and Trinity Valleys Groundwater Conservation District exempts a domestic well incapable of producing more than 36,000 gallons a day from permitting with no minimum tract size, but every well must still be registered before drilling, and a well supplying a subdivision that required plat approval is not exempt at all

Neches and Trinity Valleys GCD District Rules, amended 18 July 2024, Rules 1.1(l), 3.1 and 3.4

A live groundwater moratorium that spares household wells
The district adopted a temporary moratorium on new non-exempt drilling, operating and transport permits on 21 May 2026, running through 1 October 2026 or until amended rules are adopted, whichever is later, while expressly continuing to accept exempt well registrations

Neches and Trinity Valleys GCD Resolution and Order No. 2026-001

The sand and the claypan
Axtell soils read 12.5 percent clay in the top eight inches and 45 percent below that, while Tonkawa soils run 94 percent sand to a depth of 80 inches; 145,096 acres are sandy at the surface and 35 percent clay or more at two feet

USDA-NRCS Soil Data Access, SSURGO survey area TX213, chorizon clay and sand values by depth

Design criteria exist in Athens, not in the county
Athens adopts the 2021 International Residential Code and fills in Table R301.2 at 115 mph three-second gust, 76 mph fastest mile, 5 lb per sq ft ground snow, seismic category A, 6 inch frost line and a Very Heavy termite hazard; unincorporated Henderson County publishes no design figures at all

City of Athens Code of Ordinances secs. 5-30 and 5-33 (Ord. No. 2024-O-050, 25 March 2024)

Almost eight percent of the county is water
Henderson County covers 948.4 square miles, of which 74.7 square miles is water and 873.8 square miles is land; 47,116 people live on roughly 789 square miles of unincorporated land, about 60 per square mile

U.S. Census Bureau 2024 Gazetteer counties and places files; Vintage 2025 subcounty population estimates, sub-est2025.csv

A second water authority on the other side of the county
On the Lake Palestine side, the Upper Neches River Municipal Water Authority is the TCEQ-authorized agent for on-site sewage facilities within 525 feet of the 355 msl take line

TCEQ Authorized Agent search, Henderson County (county code 107)

Steady growth, not a boom
88,595 residents in 2025 against an estimates base of 82,151 in 2020, up 7.8 percent

U.S. Census Bureau Vintage 2025 county population estimates, co-est2025-alldata.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 Henderson 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 Henderson 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.

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What a build looks like

Three stages every Henderson 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 Henderson 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 Henderson County. Tell us what you want to build and we will draw it to them.

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Where we build around Henderson County

Henderson 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 Henderson County service area, covering Henderson 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 Henderson County allows.

Barndominium Cost Guide

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

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Is It Legal in Texas?

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

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How Long Does It Take?

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

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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.

Smith County

Smith County
Van Zandt County

Van Zandt County
Tyler

Smith County

Building in Henderson County: common questions

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

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Does a building code apply on unincorporated land in Henderson County?
No. A Texas county has no general building-code authority in its unincorporated area unless its commissioners court has adopted an order under Subchapter F of Local Government Code chapter 233, and there is no record of Henderson County doing so. The county's own Hazard Mitigation Plan answers BUILDING CODE with NO in its regulatory capabilities table and lists no full-time building official. The Subdivision Regulations set out the statutes the county acts under, naming chapter 233 Subchapter B for set-back lines, and Subchapter F is not among them. So outside city limits there is no county building permit, no plan review, no county inspector and no county-adopted wind speed or frost depth. If you want that confirmed for your parcel, the Development and Floodplain Administration Office is on (903) 677-7242.
Who issues the septic permit near Cedar Creek Lake?
The Tarrant Regional Water District, not Henderson County. Cedar Creek Reservoir is a TRWD water supply reservoir, and TCEQ's authorized agent register lists TRWD as the agent for the area within 2,000 linear feet of the Cedar Creek Reservoir flood pool, which the district's order defines as the land below the 325.00 foot mean sea level contour. City land is carved out of that, and the Henderson County septic office serves the rest of the unincorporated county. On the Lake Palestine side of the county the agent is the Upper Neches River Municipal Water Authority, within 525 feet of the 355 msl take line. Three different agents in one county, decided by which water you are near, so establish which one your parcel falls to before you buy.
What does the water district require that the state does not?
Four things, listed in its own order. Every on-site sewage facility in the regulated area must be designed by a registered professional sanitarian or a professional engineer. Every system must be permitted by the district regardless of tract size, and the order says in terms that this includes tracts larger than ten acres. Land subdivided or platted after the order took effect must be at least one acre on a public water supply and at least two acres on a private well, against the state minimums of half an acre and one acre. And new surface irrigation for effluent disposal is prohibited outright, with quarterly maintenance, testing and chlorine-residual reporting on systems that hold a maintenance contract.
Does the shop bay count towards the drainfield size here?
Not by any rule the water district or the county has published. Texas sizes a system off living area rather than total structure area, so a barndominium with, say, 1,800 square feet of three-bedroom living space and a 2,200 square foot shop is a three-bedroom house for sizing purposes. Some authorized agents in Texas redefine that, and the one on the Highland Lakes counts any heated or cooled room that could serve for sleeping, which catches a loft over a shop. The Cedar Creek order does not: the words bedroom, loft and garage do not appear in it at all. Its stringency list is the four items above. Confirm the numbers with whichever agent has your parcel before you draw anything.
Can I build near the water's edge?
Not freely, and this is the question to settle before you sign. The conservation or spillway elevation of Cedar Creek Lake is 322.00 feet above mean sea level and the current 100 year flood level is 325.00. The water district states that it purchased a flood easement covering the property between those two elevations. It also requires a permit for all construction, placement or operation of any structure, improvement or facility of any type, or to excavate or place fill, at or below elevation 325.00, and its structure guidelines say there will be no living quarters built over any area below the spillway elevation, whether spanned, cantilevered or by any other means. A survey with elevations, not a plat, is what answers this.
What permits does the county itself actually issue?
For a house outside a city, the septic permit and, in a special flood hazard area, a Floodplain Development Permit. The county's floodplain ordinance requires the lowest floor of new residential construction to sit two feet above the base flood elevation, certified by an engineer, architect or land surveyor. Beyond that the county reviews plats, requires a 9-1-1 address, and enforces a driveway culvert order adopted on 10 July 2019 with a 15 inch minimum. Its Development Application is a questionnaire, and it says on its face that providing the information does not constitute approval or permit issuance. None of these is a code review.
Is there zoning out here?
No. No Texas county has general zoning power, and section 233.153(d)(2) would not grant it even under a Subchapter F order. Two things are easy to mistake for zoning. The first is real: the county has adopted building set-back lines under chapter 233 Subchapter B, so no new building may sit closer than 25 feet from the edge of the right-of-way of a public county road, or 50 feet from any state or federal highway. The second is airport zoning under chapter 241, a height rule that a county may join a joint board to administer. What genuinely controls land use out here is recorded deed restrictions, and Texas courts enforce them. Read the title commitment before you buy.
What is the ground like, and what does it do to a build?
It does two opposite things, and the county contains both. Measured from the USDA soil survey for Henderson County, about 185,066 acres carry 40 percent clay or more at two feet down while about 184,875 acres carry under 8 percent. Axtell, the second most extensive soil here, reads 12.5 percent clay in the top eight inches and 45 percent immediately below, so the surface tells you nothing. Tonkawa runs 94 percent sand to 80 inches. Texas uses no percolation test; it classifies soil by texture, and clay sits in the slowest class, which means a large drainfield, while a very sandy soil can fail the other way because the state's rules say the fastest class does not treat wastewater adequately through soil contact. A site evaluation, not a county name, answers it for your acre.
Do I need a permit for a water well?
A registration, almost certainly, and possibly more. Henderson County lies in the Neches and Trinity Valleys Groundwater Conservation District, which also covers Anderson and Cherokee counties. Its rules exempt a well used solely for domestic or agricultural use that is incapable of producing more than 36,000 gallons a day, and unlike several Texas districts it sets no minimum tract size for that exemption. But no one may drill without first registering the well with the district, and an exempt well is expressly not exempt from registration. One trap matters here: a well supplying water for a subdivision of land for which plat approval is required by law is not exempt at all, so the platting question decides the well question. The district is on (903) 541-4845.
Does letting the barndominium change anything?
Not which code applies, because no county residential code applies either way. It does affect one defence. Section 233.157(c) shields an individual who builds a house themselves, or acts as their own contractor, and intends it as their own primary residence; let it out instead and that shield is simply not available. Separately, the county does regulate manufactured home, mobile home, tiny home and RV rental communities through an infrastructure development plan with an $850 application fee and a county engineer's inspection, but that instrument reaches those defined structures on rented spaces, not a site-built house you rent to one family. If a rental is the plan, say so early and confirm it with the county.
What if my land is inside a city or a city's ETJ?
Then the answer changes, and around Cedar Creek that happens often. Twenty-one incorporated places have territory in the county, and most of the small ones sit on the lake shore. Inside city limits the city's own adopted code, permit and inspector apply: Athens, the county seat, runs the 2021 International Residential Code and publishes a filled-in Table R301.2 at 115 mph. Athens also runs its own septic programme inside its limits. City land is carved out of the water district's septic jurisdiction as well, unless the city has signed an intergovernmental contract with the district. In a city's extraterritorial jurisdiction the position is genuinely contested, and Texas courts have held that a city has no ETJ building-code authority. Settle which side of which line the parcel is on first.

Building in Henderson County?

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