Barndominium construction in Central Texas, from the pad to the keys

Two jobs under one contract. The first is the building: a steel or post-frame structure, a foundation, insulation and cladding, then the plumbing, electrical and mechanical work that makes it livable year round. The second is the lot: the county permit, the septic system, the driveway and culvert, the water source, the electric run and the 911 address. On a platted lot in town the second job is short. On raw acreage it is most of the calendar.

Order beats speed on the lot side. In Burnet County the sequence is fixed and the county will not process an incomplete packet: the 911 address first, then the building permit, then the septic permit. In Williamson County a Certificate of Compliance from the County Engineer has to be processed before the septic application will be. In Caldwell County the approved septic permit is one of the papers the construction permit requires. A build that starts with a floor plan and works backward finds all of this out late.

The full route, from the day you own dirt to the day the power is on, is laid out in building a barndominium in Central Texas. This page is the narrower question: what the construction work is, and how to judge the people who do it.

• Site work: clearing, the pad, drainage, the driveway and the culvert.

• Utilities: septic, water source, electric service, and the 911 address the county wants before it will take other applications.

• Structure: foundation, frame, roof and wall panels, doors and windows.

• Interior: insulation, plumbing and electrical rough-in, mechanical, then finishes.

• Paper: county permits, city permits where they apply, floodplain and aquifer approvals, and any inspections the builder has to contract.

Source: Texas Local Government Code Sec. 233.154(a)(3), read 2026-09-13.

Source: Burnet County On-Site Sewage Facilities and Development Services, read 2026-09-13.

Source: Williamson County frequently asked questions, County Engineer, read 2026-09-13.

Source: Caldwell County Development Ordinance, revised February 14, 2023, read 2026-09-13.

No. Texas does not require a state license to work as a general contractor, though local city or county requirements may still apply. The Texas Residential Construction Commission was abolished and its enabling Act expired on September 1, 2009. The person you hire is an independent builder, because that is what state law makes them.

Three trades on your job are licensed by the state, and you can check every one. Plumbers are licensed through the Texas State Board of Plumbing Examiners, which runs a public license lookup. Electricians are licensed through TDLR, and non-exempt electrical work must be done through a licensed electrical contractor, verified in the TDLR license search. Anyone operating as an on-site sewage installer, apprentice, maintenance provider or maintenance technician must be licensed or registered by TCEQ, with Installer I covering standard systems and Installer II covering all system types, and TCEQ publishes that lookup too.

So the verification you can actually do is license lookups on the trades and paperwork on the builder. Ask for the permit numbers on the last two houses they finished in the county where your lot sits, and call that county office to confirm the numbers. Where a county has adopted the state's optional residential building code standards, the builder, not the county, contracts the required inspections, and the inspector has to be one of six listed qualified persons. Ask who they have used, and note that the rule lets them use one inspector throughout or a different one each time.

Source: Office of the Texas Governor, Business Permit Office, Texas Business Licenses and Permits Guide, read 2026-09-13.

Source: Texas Sunset Advisory Commission, read 2026-09-13.

Source: Texas State Board of Plumbing Examiners, read 2026-09-13.

Source: Texas State Board of Plumbing Examiners, read 2026-09-13.

Source: Texas Department of Licensing and Regulation, Electricians program, read 2026-09-13.

Source: Texas Department of Licensing and Regulation, read 2026-09-13.

Source: TCEQ, Occupational Licenses: On-Site Sewage Facilities (Septic Systems), read 2026-09-13.

Source: TCEQ, On-site Sewage Facilities: Information for Regulators, read 2026-09-13.

Source: Texas Local Government Code Sec. 233.152, read 2026-09-13.

Source: Texas Local Government Code Sec. 233.154(a)(3), read 2026-09-13.

The site work, the trenching and the foundation design. This footprint does not sit on one kind of ground, so the first question is which ground your tract is on, and the second is what the contract says about it.

Llano and Burnet counties are core counties of the Llano Uplift, a large granite batholith and the major structural feature of central Texas, with Precambrian granites and metamorphic rocks forming the central dome. Enchanted Rock is a massive pink granite dome rising above Central Texas. At Inks Lake State Park in Burnet County, on the east edge of the uplift, pink Valley Spring gneiss juts up through the limestone. On ground like that, trenching is the question. Ask how the pad, the utility trenches, the water line and the septic excavation get cut on your tract, and get that answer written into the contract rather than discovered on the first day of machine time.

Limestone raises a second problem on top of the digging. The Edwards Plateau has shallow soils underlain by limestone, many springs, stony hills and steep canyons. Faulting along the Balcones Fault Zone followed uplift of the plateau, and streams crossing the zone recharge the aquifer where permeability is enhanced by dissolution of limestone. The Edwards Aquifer recharge zone is where those rock units crop out, plus nearby outcrops with caves, sinkholes, faults or fractures that could let surface water into the aquifer, which is how a rocky lot turns into an approval that sits in front of the build.

Clay raises the opposite question. In the Post Oak Savannah, a transitional region of oak woodland patches interspersed with grassland at 300 to 800 feet, uplands are sands and sandy loams with clay or clay loams in bottomlands, and a dense clay pan almost impervious to water underlies all soil types at only a few feet deep. That pan is a drainage problem and a drainfield problem at once. In the Blackland Prairies, named for deep fertile black soils on gently rolling to nearly level land at 300 to 800 feet, Houston Black soil cracks 0.5 to 4 inches wide from the surface down 12 inches or more when dry. It formed in clayey residuum weathered from calcareous mudstone of Upper Cretaceous age, mainly on 1 to 3 percent slopes. If that is your tract, ask what the foundation design assumes about that movement and who stamps it.

Bastrop County adds the Lost Pines, over 75,000 acres of loblolly pine across parts of five counties, the westernmost stand of loblolly in the United States, with pollen records showing pines there for over 18,000 years. Those pines come with a habitat question, covered further down this page.

Source: Texas Water Development Board, Report 360 Chapter 9, Paleozoic Aquifers of the Llano Uplift, read 2026-09-13.

Source: Texas Water Development Board, Report 360 Chapter 9, read 2026-09-13.

Source: Texas Parks and Wildlife Department, Enchanted Rock State Natural Area, read 2026-09-13.

Source: Texas Parks and Wildlife Department, read 2026-09-13.

Source: Texas Parks and Wildlife Department, Texas Ecoregions, read 2026-09-13.

Source: USGS, Karst Aquifers: Edwards Balcones Fault Zone Aquifer, read 2026-09-13.

Source: TCEQ GIS metadata, quoting 30 TAC 213.3(25), read 2026-09-13.

Source: Texas Parks and Wildlife Department, read 2026-09-13.

Source: USDA NRCS, Official Series Description, Houston Black Series, read 2026-09-13.

Source: Texas Parks and Wildlife Department, Bastrop State Park, read 2026-09-13.

Source: Bastrop County Development Services, read 2026-09-13.

Six different answers. Only Burnet County issues a building permit for a house. The others permit the development, or the lot paperwork, or nothing at all on the structure itself.

Behind all six sits one state option. The county residential building code standards subchapter applies only to a county that has first adopted a resolution or order opting in, and that is either within 50 miles of an international border or above the stated population threshold. In a covered county, new residential construction in the unincorporated area must meet the International Residential Code as published May 1, 2008, or the IRC version in force in that county seat. The subchapter does not let a county require permission before construction starts and does not create zoning power. At least three inspections are required for a new house or duplex on a vacant lot, and the builder contracts them. The county-by-county walkthrough is in the permit guide for all six counties.

• Travis County, permit and inspections. Any development in the county requires a permit, and development is defined to include structures and buildings, driveways, work in the county right of way, on-site sewage facilities, dividing land, and grading, excavation and clearing to prepare a site. The application states the International Residential Code year the build will follow. Where a professional builder does the work, at least three third-party inspections are required: foundation before the concrete is placed, framing and mechanical before drywall, and completion. Manufactured homes need the permit but are exempt from those inspections. The standards apply to work begun after September 1, 2009.

• Bastrop County, permit and inspections. A development permit is required for all development in the unincorporated county, a single-family home included, and the permit class is set by the parcel's relationship to the mapped 100-year floodplain. Where there is no public sewer, the development permit and the septic permit are applied for at the same time. The county issues no building permit and no certificate of occupancy and inspects nothing itself, but Commissioners Court adopted residential building code standards by resolution on September 14, 2009, and three inspections at foundation, framing and mechanical, and completion are contracted by the builder with a private qualified inspector.

• Burnet County, permit with inspection only in the floodplain. The county issues building permits outside city limits and will not issue the septic permit without one. A Class A permit covers a site outside any flood hazard area and is application and payment only. A Class B permit covers a site inside a designated flood hazard boundary and needs an elevation certificate from a surveyor or a letter from an engineer, a site plan showing the flood zone, and two inspections, pre-pour and finished construction.

• Llano County, development permit only. The county issues no building permits and runs no building department, building code or building inspector. A new house needs a county development permit, which is also the 911 address application, a septic permit, and a floodplain development permit where any of the lot is in a mapped special flood hazard area. Reviews outside the floodplain take seven to 10 business days, longer for floodplain, septic and commercial work.

• Williamson County, no building permit. In the county's own words, Texas counties have not been given general zoning authority by the state legislature, so it does not issue building permits except for health and safety issues and issues no certificate of occupancy. It has not adopted the optional county residential building code standards, so it sets no building code for the unincorporated county and inspects no houses. Before a new home it requires a Certificate of Compliance from the County Engineer, the floodplain check, in hand before a septic application is processed. A lot in a recorded subdivision may already carry one in its plat notes.

• Caldwell County, Residential Construction Permit without structural inspection. It is not a building code permit and the county does not inspect framing or electrical work. What the county reviews is the recorded plat or a metes and bounds survey, the deed, tax certificates showing current taxes paid, a sketch of the proposed structure, the approved 911 address and the approved county septic permit. The parcel has to be an original tract, a legally platted lot, or a tract exempt from platting, or the permit does not issue.

Source: Texas Local Government Code Sec. 233.152, read 2026-09-13.

Source: Texas Local Government Code Sec. 233.153(a), read 2026-09-13.

Source: Texas Local Government Code Sec. 233.153(d), read 2026-09-13.

Source: Texas Local Government Code Sec. 233.154(a)(1), read 2026-09-13.

Source: Texas Local Government Code Sec. 233.154(a)(3), read 2026-09-13.

Source: Travis County Transportation and Natural Resources, Development Services, read 2026-09-13.

Source: Bastrop County Development Services, read 2026-09-13.

Source: Burnet County On-Site Sewage Facilities and Development Services, read 2026-09-13.

Source: Llano County Development Services, read 2026-09-13.

Source: Williamson County frequently asked questions, County Engineer, read 2026-09-13.

Source: Caldwell County Development Ordinance, revised February 14, 2023, read 2026-09-13.

Then a second permit desk applies and the code year changes with it. Confirm the jurisdiction on the address before anyone prices the building.

Austin's extraterritorial jurisdiction also reaches into four counties: Travis, Williamson, Hays and Bastrop. An address outside every city limit can still fall inside a city process.

• Georgetown requires a permit to construct, enlarge, alter, repair, move, demolish or change occupancy of a building, or to work on electrical, gas, mechanical or plumbing systems, on the 2021 International Residential Code effective November 1, 2023. In its ETJ it reviews subdivision, stormwater, utility evaluation, driveway permits and sign permits, and its building permits do apply in the ETJ when the City is the water, wastewater or electric provider.

• Leander requires a permit before any construction starts inside the city limits, on the 2021 IRC for One and Two-Family Dwellings plus the 2023 National Electrical Code with local amendments. In the Leander ETJ the only permits required are for signs and water or wastewater connections.

• Liberty Hill requires a building permit for any construction that physically changes or adds structures, on the 2021 IRC, and the permit expires after 180 days unless construction continues or an extension is granted. In its ETJ, platting and stormwater permits may be required and sign permits are required, but City building permits are not unless a development agreement is in place.

• Marble Falls requires a building permit for all construction inside the city limits, on the 2024 IRC with the 2023 National Electric Code. It has a one mile ETJ where it regulates signs, subdivision, non-point source pollution and water quality, and issues no building, electrical or mechanical permits.

• The City of Burnet requires a building permit for any construction that physically changes or adds a structure, dwellings first on the list, under the 2021 International Codes including the 2021 IRC, the 2021 Fire Code and the 2023 National Electrical Code, for permits received on or after April 1, 2025.

• The City of Llano issues building, plumbing, electrical and mechanical permits through Code Enforcement and inspects all permitted work, under the 2021 IRC and the 2021 National Electric Code.

• The City of Bastrop requires residential permits under the International Residential Code and publishes a checklist for infill new residential construction, on the 2018 IRC with the 2023 National Electric Code. It holds subdivision authority in the city limits and throughout its ETJ, with an interlocal agreement giving Bastrop County review of part of it.

• Lockhart requires a permit for most construction that physically changes or adds a structure, a new dwelling first on the list, on the 2018 IRC adopted by Ordinance 2021-39. Property in its ETJ is subject to city subdivision and signage regulations, not the full city code.

Source: City of Georgetown Development Services, When do I need a Permit?, read 2026-09-13.

Source: City of Georgetown Development Services, Adopted Building Code, read 2026-09-13.

Source: City of Georgetown Development Services, Extra-Territorial Jurisdiction (ETJ) and City Limits, read 2026-09-13.

Source: City of Leander, Permits and Building Inspection, read 2026-09-13.

Source: City of Leander, Building Codes, read 2026-09-13.

Source: City of Liberty Hill, Building Permits and Inspections, read 2026-09-13.

Source: City of Liberty Hill, Frequently Asked Questions (Planning and Development), read 2026-09-13.

Source: City of Marble Falls FAQ, Do I need a permit within the city limit?, read 2026-09-13.

Source: City of Marble Falls Building Division, read 2026-09-13.

Source: City of Marble Falls FAQ, Do I need a permit outside the city limit?, read 2026-09-13.

Source: City of Burnet Building Department, read 2026-09-13.

Source: City of Burnet, Burnet Code Adoption 2021 (PDF, city-hosted), read 2026-09-13.

Source: City of Llano Code Enforcement Department, read 2026-09-13.

Source: City of Bastrop Building and Permitting, read 2026-09-13.

Source: City of Bastrop Development Services, read 2026-09-13.

Source: City of Bastrop Development Process, read 2026-09-13.

Source: City of Lockhart, Do I need a permit? FAQ, read 2026-09-13.

Source: City of Lockhart Council Packet, Ordinance 2021-39 (PDF, city-hosted), read 2026-09-13.

Source: City of Lockhart Construction Standards and Contractor License Information, read 2026-09-13.

Source: City of Austin Planning, Jurisdictional Matters, read 2026-09-13.

Often, and on raw land usually. An OSSF permit is required to construct, install, alter, extend or repair a septic system, and local programs may be stricter than the state minimum. The permitting authority must approve or deny the planning materials and permit application within 30 days of receipt, with a written explanation on denial and an appeal to its supervisory body. Emergency repairs need no permit but must be reported in writing within 72 hours after repairs begin.

The state exemption most landowners have heard about does not survive here. State rule exempts a system from planning materials, permit and inspections when it serves a single family dwelling on a tract of ten acres or larger, meets all the construction standards, causes no nuisance or groundwater pollution, keeps every part at least 100 feet from the property line, disposes of effluent on the property, and is the only dwelling on the tract. A local entity may adopt stricter standards, each justified in writing on public health and safety grounds and reviewed by the TCEQ executive director, and stricter local standards control. That is what happened: Travis County states no lot-size exemption at all and sets a one acre minimum for a home on septic, Burnet County permits and inspects every system whatever the tract size, Bastrop County requires a permit for every installation or modification regardless of acreage with a half acre minimum on a public water supply and one acre without, Caldwell County requires application, permit and inspection whatever the size with a one acre minimum and allows only a licensed installer to build the system, and Llano County permits every system whatever the tract size.

Know which agent holds your address before you plan anything. Travis County has seven OSSF authorized agents, Burnet County eight, Caldwell County five, Llano County three, Bastrop County two, and Williamson County exactly one, the county itself, covering the whole county. LCRA appears as an agent in Travis, Burnet and Llano and does not appear in Williamson, Bastrop or Caldwell. TCEQ's authorized agent lookup is a county search that returns every agent in the county with the area each one serves. In Williamson County the septic application goes through the County Engineer's online portal only, and the Certificate of Compliance has to be processed first.

Source: TCEQ, Getting a Permit for an On-Site Sewage Facility, read 2026-09-13.

Source: TCEQ adopted rule text, 30 TAC Chapter 285, Rule Project No. 2021-030-285-CE, section 285.3, read 2026-09-13.

Source: TCEQ publication RG-472, On-Site Sewage Facility Rules Compilation, 30 TAC 285.10(b)(4), read 2026-09-13.

Source: Texas Health and Safety Code Sec. 366.032(b), read 2026-09-13.

Source: TCEQ, Occupational Licenses: On-Site Sewage Facilities (Septic Systems), read 2026-09-13.

Source: TCEQ OARS county search, Travis County (CNTY_CD 227), read 2026-09-13.

Source: TCEQ OARS county search, Williamson County (CNTY_CD 246), read 2026-09-13.

Source: TCEQ OARS county search, Burnet County (CNTY_CD 27), read 2026-09-13.

Source: TCEQ OARS county search, Llano County (CNTY_CD 150), read 2026-09-13.

Source: TCEQ OARS county search, Bastrop County (CNTY_CD 11), read 2026-09-13.

Source: TCEQ OARS county search, Caldwell County (CNTY_CD 28), read 2026-09-13.

Source: TCEQ OARS county search, identical entry returned for Travis, Burnet and Llano counties, read 2026-09-13.

Source: TCEQ On-Site Activity Reporting System, search by county, read 2026-09-13.

Source: Travis County Transportation and Natural Resources, Development Services, read 2026-09-13.

Source: Burnet County On-Site Sewage Facilities and Development Services, read 2026-09-13.

Source: Bastrop County Development Services, read 2026-09-13.

Source: Caldwell County Development Ordinance, revised February 14, 2023, read 2026-09-13.

Source: Llano County Development Services, read 2026-09-13.

Source: Williamson County frequently asked questions, County Engineer, read 2026-09-13.

A second permit desk on lake land, with its own map. TCEQ designated LCRA as an authorized agent to administer TCEQ's on-site sewage facility rules and standards within LCRA's jurisdiction. LCRA regulates on-site sewage facilities within a 2,200-foot zone around the upper Highland Lakes and within a 2,000-foot zone around Lake Travis. The regulated area is built from two layers: a Restricted Zone at each lake, plus a Water Quality Zone extending 2,000 feet horizontally beyond the outer boundary of that Restricted Zone. Five lakes are named in the rules: Lake Buchanan, Inks Lake, Lake Lyndon B. Johnson, Lake Marble Falls and Lake Travis.

The counties point at it themselves. Travis County names LCRA as the septic agent near Lake Travis. Llano County's subdivision rules send lots inside LCRA's water quality zone to LCRA's rules. Burnet County publishes a link to the jurisdiction map and does not say which lake lots fall inside it, so the map is your job, not the county's.

Inside that jurisdiction a permit is required before constructing or installing any on-site sewage facility, no matter the lot size. Allow up to 30 days from the date the application is submitted for a new system permit, not counting design or site complications. An inspection is required on every transfer of ownership before LCRA will approve the new owner for continued use. On an aerobic treatment unit a maintenance contract is required for the first two years, after which the owner may do the maintenance only after taking the class and passing the test.

One distance is in dispute and this page does not resolve it. LCRA's own pages say the Lake Travis zone is 2,000 feet. Travis County is reported to say 1,000 feet, and nothing checked on lcra.org says 1,000 feet. Ask LCRA and Travis County TNR in writing which distance applies to your address. LCRA publishes an address-searchable OSSF and watershed jurisdiction map. Separately, any property with water frontage on Lake Austin or its tributaries is inside Austin Water's septic jurisdiction no matter how the lot or house or drainfield sits.

The Highland Lakes Watershed Ordinance is the other LCRA layer. It covers the Lake Travis watershed in Travis County, the Colorado River watershed in Burnet County, and a portion of Llano County, above the Regulated Pool Elevation of the Highland Lakes as drawn on the official Ordinance Map. It regulates construction of buildings, roads, paved storage areas and parking lots, plus any land-disturbing and construction activity including clearing, excavating, grading, contouring, mining and depositing refuse, waste or fill. A development permit is required if impervious cover will exceed 10,000 square feet and/or land disturbance will exceed one acre. A single-family residence may be built without a permit by filing a written notification with LCRA if it creates under 10,000 square feet of impervious cover and disturbs under one acre; above 10,000 square feet of impervious cover but still under one acre of disturbance, the notification route stays open only if the site meets the downstream buffer guidelines in the LCRA Technical Manual. Count the drive, the pad, the parking and the outbuildings before you assume you are under. Eleven local governments administer part or all of the ordinance under interlocal agreements, so an LCRA permit may not be the one that applies to your address.

Source: LCRA On-Site Sewage Facilities Program, read 2026-09-13.

Source: LCRA On-Site Sewage Facilities Rules, Section 6, Area of Jurisdiction, read 2026-09-13.

Source: LCRA On-Site Sewage Facilities Rules, Section 10.05(b), read 2026-09-13.

Source: LCRA On-site Sewage Rules Frequently Asked Questions, read 2026-09-13.

Source: LCRA Water Quality Jurisdictions map, read 2026-09-13.

Source: Austin Water, On-Site Sewage Facilities, read 2026-09-13.

Source: LCRA Highland Lakes Watershed Ordinance, Section 1, Title and Scope, read 2026-09-13.

Source: LCRA Highland Lakes Watershed Ordinance program page, read 2026-09-13.

Source: LCRA Highland Lakes Watershed Ordinance program page, Required notifications and permits, read 2026-09-13.

Source: LCRA Highland Lakes Watershed Ordinance, Section 4.1(b), Written Notification, read 2026-09-13.

Source: LCRA Highland Lakes Watershed Ordinance program page, Interlocal agreements, read 2026-09-13.

Source: Travis County Transportation and Natural Resources, Development Services, read 2026-09-13.

Source: Burnet County On-Site Sewage Facilities and Development Services, read 2026-09-13.

Source: Llano County Development Services, read 2026-09-13.

Only in two of these six counties, and only in certain zones. The Edwards Aquifer Protection Program covers eight Texas counties. In the Austin region it covers Williamson, Travis and Hays counties, handled by the TCEQ Austin Regional Office at (512) 339-2929, with the other five counties going to San Antonio. The zone, not the county line, decides what you file. Travis County puts the aquifer question ahead of the site work on the western side of the county.

The recharge zone is where the Edwards Aquifer rock units crop out, plus nearby outcrops with caves, sinkholes, faults or fractures that could let surface water into the aquifer. The contributing zone is the watershed upgradient of the recharge zone, generally north and northwest of it. In Travis County that is all areas except the watersheds draining to the Colorado River above a point 1.3 miles upstream from Tom Miller Dam; in Williamson County it is all areas except the watersheds draining to the Lampasas River above Stillhouse Hollow dam. The transition zone is the area south and southeast of the recharge zone where faults or fractures give surface water a possible path in.

On the recharge zone every regulated activity needs an approved Water Pollution Abatement Plan before construction starts, with no acreage floor. In the contributing zone a Contributing Zone Plan is required, and it is triggered when activities disturb at least five acres or are part of a larger plan of development or sale; below that, no Edwards Aquifer protection plan is needed there. If a site sits partly on the contributing zone and partly on the recharge zone, the whole site is treated as recharge zone and a WPAP is required, and the same escalation applies to a transition zone site draining back to the recharge zone.

Build the review time into the schedule. Administrative review takes up to 30 days and technical review of an administratively complete application takes 90 days, and construction cannot begin until approval issues. A single-family residence may not need its own plan if it sits in a master community with an approved plan, or on a lot larger than five acres with only that one residence, or keeps impervious cover to 20 percent or less of the legal property. Check the parcel in the TCEQ Edwards Aquifer Map Viewer and print the map for the application. In Williamson County a septic system over the recharge zone has to be designed by a registered sanitarian or a professional engineer.

Source: TCEQ GIS metadata, Edwards Aquifer Recharge Zone - Chapter 213 Rules (TSMS), quoting 30 TAC 213.3(8), read 2026-09-13.

Source: TCEQ Edwards Aquifer Protection Program home page, read 2026-09-13.

Source: TCEQ GIS metadata, quoting 30 TAC 213.3(25), read 2026-09-13.

Source: TCEQ GIS metadata, quoting 30 TAC 213.22(2), read 2026-09-13.

Source: TCEQ GIS metadata, quoting 30 TAC 213.3(34), read 2026-09-13.

Source: TCEQ, Contributing Zone Plan page, read 2026-09-13.

Source: TCEQ, Edwards Aquifer Protection Program: What Plans You Might Need, read 2026-09-13.

Source: TCEQ, Water Pollution Abatement Plan page, read 2026-09-13.

Source: TCEQ, What Plans You Might Need, recharge zone branch, read 2026-09-13.

Source: TCEQ, What Plans You Might Need, contributing zone branch, read 2026-09-13.

Source: TCEQ, Edwards Aquifer Private Residences page, read 2026-09-13.

Source: TCEQ, Edwards Aquifer Map Viewer page, read 2026-09-13.

Source: Williamson County frequently asked questions, County Engineer, read 2026-09-13.

Source: Travis County Transportation and Natural Resources, Development Services, read 2026-09-13.

The elevation of the finished floor, the survey work, and sometimes the clearing plan. A permit is required before construction or development begins inside any Special Flood Hazard Area, and the floodplain administrator is responsible for making sure development complies with floodplain management regulations and other applicable codes and that permits are applied for. The FEMA Flood Map Service Center is the official public source for flood hazard information produced for the National Flood Insurance Program, searchable by address, place name or coordinates. Check it before you make an offer.

The Elevation Certificate is the document that carries the proof. It is an NFIP administrative tool used to set the flood insurance premium rate, to document elevation for compliance with community floodplain management regulations, and to support a LOMA or LOMR-F request. Land surveyors, architects and engineers authorized by law certify the elevation information, and Section G is completed by a community official authorized by law or ordinance to administer the floodplain ordinance.

Wildfire is the other hazard with a build consequence. The 2011 Bastrop County Complex fire covered 32,400 acres, with 75 percent of it burning at extreme fire intensity, destroyed 1,660 homes and 36 commercial buildings, and burned for 37 days. Texas A&M Forest Service defines three home ignition zones by distance: Immediate 0 to 5 feet, Intermediate 5 to 30 feet, and Extended 30 to 100 feet, out to 200 feet if available. In the intermediate zone tree crowns should be at least 18 feet apart and the mature canopy no closer than 10 feet to the home; in the extended zone spacing is at least 12 feet at 30 to 60 feet out and at least 6 feet at 60 to 100 feet out. Those distances set where the pad sits on a wooded tract, so settle them before the site plan is drawn. The Texas Wildfire Risk Assessment Portal supplies statewide mitigation and prevention planning data, maps, reports and statistics.

Protected species pull the other way, toward keeping trees. The Houston toad is federally endangered, listed on October 13, 1970, and range-wide audio surveys from 2006 to 2011 detected it in only nine counties, Bastrop among them. Critical habitat was designated in portions of Bastrop and Burleson counties on January 31, 1978, and the seasonally moist sandy soils of the Lost Pines provide critical habitat for it. In Bastrop County a Lost Pines Habitat Conservation Plan decision is part of the county development application where the tract is in the covered area. The golden-cheeked warbler nests and breeds only in mixed Ashe juniper and deciduous woodlands of central Texas, arriving at its breeding grounds from January to March and leaving in late summer. Ask the county development office how a clearing schedule lines up with that window before the machines are booked.

• Travis County: full architectural and site plans, lowest floor elevations and a flood venting plan, an elevation certificate before framing starts, a finished-construction certificate within 30 days, and no effect on the base flood elevation.

• Williamson County: a floodplain development permit in or next to the 100-year floodplain, the structure at least a foot above the base flood elevation, and a surveyor filing a FEMA elevation certificate twice, after the slab and at completion.

• Burnet County: a Class B permit inside a designated flood hazard boundary, with an elevation certificate or engineer's letter, a site plan, and two inspections. One foot of freeboard above base flood elevation is required and two feet recommended in an A zone.

• Bastrop County: two feet of freeboard above base flood elevation, extended to some Zone X areas where base level engineering has set flood depths, with a surveyor certifying the elevation.

• Caldwell County: a home inside or within 300 feet of a floodplain must have its first finished floor at least two feet above the adjoining base flood elevation, with an elevation certificate. The county Director of Sanitation is the Floodplain Administrator.

• Llano County: a floodplain development permit for any development in a special flood hazard area, and reviews there run longer than the seven to 10 business days quoted outside it.

Source: FEMA glossary, Permit for Floodplain Development, read 2026-09-13.

Source: FEMA, NFIP Floodplain Management Requirements study guide, Unit 7, read 2026-09-13.

Source: FEMA Flood Map Service Center, read 2026-09-13.

Source: FEMA 467-1, Floodplain Management Bulletin: Elevation Certificate, read 2026-09-13.

Source: FEMA, Elevation Certificate FAQ, October 2023, read 2026-09-13.

Source: Texas A&M Forest Service, read 2026-09-13.

Source: Texas A&M Forest Service, read 2026-09-13.

Source: Texas A&M Forest Service, read 2026-09-13.

Source: U.S. Fish and Wildlife Service, read 2026-09-13.

Source: Texas Parks and Wildlife Department, Bastrop State Park, read 2026-09-13.

Source: U.S. Fish and Wildlife Service, read 2026-09-13.

Source: Travis County Transportation and Natural Resources, Development Services, read 2026-09-13.

Source: Williamson County frequently asked questions, County Engineer, read 2026-09-13.

Source: Burnet County On-Site Sewage Facilities and Development Services, read 2026-09-13.

Source: Bastrop County Development Services, read 2026-09-13.

Source: Caldwell County Development Ordinance, revised February 14, 2023, read 2026-09-13.

Source: Llano County Development Services, read 2026-09-13.

Address and approvals first, dirt later. The exact order is county by county, but the shape holds across all six.

The long drive, the culvert and any low water crossing are their own project on acreage, and in Burnet County the driveway approval has to be in hand before the 911 address is even assigned, which puts it ahead of every other permit.

• Confirm jurisdiction. County, city limits or ETJ, and which septic agent holds the address.

• Check the maps. FEMA's flood map on any lot, the TCEQ Edwards Aquifer Map Viewer in Travis and Williamson, and LCRA's address-searchable jurisdiction map on lake land.

• Driveway and 911 address. In Burnet County the precinct commissioner signs a county road access permit and sets culvert location, length and diameter at a site meeting; TxDOT approves a driveway onto a Farm to Market, Ranch Road or State Highway. In Llano County nothing may be installed on a county right of way, driveways and culverts included, without the precinct commissioner's written permission, plus a county road cut permit. Williamson County Road and Bridge issues the driveway permit and sizes the culvert. Travis County issues no permit for a driveway onto an unmaintained or unaccepted road, and where it does permit one the approach is concrete, meets the road at about 90 degrees, and uses corrugated metal culvert pipe at least 18 inches across. In Bastrop County the driveway is part of the same development application. In Caldwell County the Unit Road Department permit stays in force even on a tract exempt from platting.

• County approval in the right order. Williamson's Certificate of Compliance before the septic application. Burnet's 911 address, then building permit, then septic permit. Caldwell's septic permit as one of the papers the construction permit requires. Bastrop's development and septic permits filed together.

• Aquifer plan where required, then stormwater. Administrative review runs up to 30 days and technical review 90 days, and construction cannot begin until approval issues. The TPDES Construction General Permit TXR150000 covers construction disturbing one acre or more, or part of a larger common plan of development that will disturb one acre or more; below one acre no coverage is required.

• Site work, pad, shell, trades, finishes, with every required inspection filed as you go rather than at the end.

Source: TCEQ, Stormwater Discharges from Construction Activities: Am I Regulated?, read 2026-09-13.

Source: TCEQ Edwards Aquifer Protection Program home page, read 2026-09-13.

Source: FEMA Flood Map Service Center, read 2026-09-13.

Source: TCEQ, Edwards Aquifer Map Viewer page, read 2026-09-13.

Source: LCRA Water Quality Jurisdictions map, read 2026-09-13.

Source: Burnet County On-Site Sewage Facilities and Development Services, read 2026-09-13.

Source: Llano County Development Services, read 2026-09-13.

Source: Williamson County frequently asked questions, County Engineer, read 2026-09-13.

Source: Travis County Transportation and Natural Resources, Development Services, read 2026-09-13.

Source: Bastrop County Development Services, read 2026-09-13.

Source: Caldwell County Development Ordinance, revised February 14, 2023, read 2026-09-13.

It comes down to who chases the trades and the inspections, and to how your loan pays out. A shell hands you a structure and an envelope and leaves the interior to you. A turnkey barndominium builder carries one contract through to a finished house.

The inspection rule is the part people miss. In Travis and Bastrop counties three inspections are required on a new house and the builder, not the county, contracts them, and the inspector must be one of six listed qualified persons: foundation before concrete, framing and mechanical before drywall, and completion. If you buy a shell and finish it yourself, work out in writing who files what. An owner-builder building their own primary residence, or acting as their own contractor on it, is not penalized for failing to give the statutory notices, but that exemption is about the notices. Ask your county development office what an owner-builder still has to permit and inspect.

Your lender has an opinion too. Fannie Mae's Selling Guide recognizes single-closing construction-to-permanent financing, where the construction loan and the permanent mortgage close together and the construction loan converts automatically when building is finished. Ask what finished means on your lender's paperwork before you choose a shell. The money side of the same decision sits on this site's Central Texas barndominium cost guide, and the trade-off itself is worked through in shells versus turnkey.

Source: Texas Local Government Code Sec. 233.154(a)(3), read 2026-09-13.

Source: Texas Local Government Code Sec. 233.154(a)(1), read 2026-09-13.

Source: Texas Local Government Code Sec. 233.157(c), read 2026-09-13.

Source: Fannie Mae Selling Guide, read 2026-09-13.

Source: Travis County Transportation and Natural Resources, Development Services, read 2026-09-13.

Source: Bastrop County Development Services, read 2026-09-13.

It sets the order of payments and it puts an appraiser between you and the keys. Some lenders name barndominiums outright. Texas Farm Credit states plainly that it finances barndominiums along with traditional and manufactured homes, and offers Construction and Homesite Loans covering homes under construction, barndominiums included, and the homesite itself. Capital Farm Credit states it finances barndominiums and metal homes under its construction lending, and offers Homesite Loans for buying the lot with building deferred to later. The Veterans Land Board publishes exactly two loan programs for Veterans on its Loans for Veterans page: Land Loans and Home Loans. USDA Rural Development runs the Section 502 Direct and Section 502 Guaranteed programs for eligible rural areas and publishes a property eligibility map where an address can be checked.

The appraisal is the part that bites on an unusual house. An appraiser selects comparable sales that match the subject property's physical and legal characteristics, because sales in the same area are the best indicator of value. When few truly comparable sales exist, whether the improvements are unusual or the neighborhood has few sales, the appraiser may use properties that are not truly comparable, provided the analysis is documented and explained. An appraiser may not manufacture a comparable by adding a vacant land sale to the contract price of a home, which is exactly the situation a construction-to-permanent deal creates.

So ask an independent builder for the addresses of finished barndominiums they have delivered in your county. Those closed sales are what an appraiser will be hunting for, and a thin comparable set is a financing problem long before it is a construction problem.

Source: Texas Farm Credit, read 2026-09-13.

Source: Texas Farm Credit, read 2026-09-13.

Source: Capital Farm Credit, read 2026-09-13.

Source: Capital Farm Credit, read 2026-09-13.

Source: Texas Veterans Land Board, Texas General Land Office, read 2026-09-13.

Source: USDA Rural Development, read 2026-09-13.

Source: USDA Rural Development, read 2026-09-13.

Source: Fannie Mae Selling Guide, read 2026-09-13.

Source: Fannie Mae Selling Guide, read 2026-09-13.

Ask in writing, and keep the answers. If a builder cannot name the permitting office for your address, that is the answer.

Then start with the address, not the floor plan. The jurisdiction, the septic agent, the flood zone and the aquifer zone are all answerable from an address and a parcel map before anyone prices a building. Call the office that holds the file: Travis County TNR Development Services, Bastrop County Development Services, Burnet County Development Services, Llano County Development Services, the Williamson County Engineer's Office, or Caldwell County Development Services and the Caldwell County Sanitation Department. On lake land, LCRA as well. On the Edwards Aquifer, the TCEQ Austin Regional Office at (512) 339-2929.

County starting points are on the locations page, and a review of the tract before you commit is land and lot evaluation.

• Which county office issued the last permit you pulled, and what is the file number?

• Who contracts the required inspections on my lot, and which qualified inspector have you used?

• What does your price include on the lot side: pad, driveway, culvert, septic, water, electric run?

• Who is the licensed septic installer, and what is their TCEQ license number?

• Who is the licensed electrical contractor, and who is the licensed plumber?

• What does the foundation design assume about soil movement, and who stamps it?

• If the tract is on granite or shallow limestone, how is rock handled, and who carries that risk in the contract?

• Which approvals are you assuming are already in place, and which are you pulling?

• What happens to the schedule if the septic decision takes the full 30 days, or an aquifer technical review takes 90?

• Show me two finished barndominiums in this county, with addresses.

Source: Texas Local Government Code Sec. 233.154(a)(3), read 2026-09-13.

Source: TCEQ, Occupational Licenses: On-Site Sewage Facilities (Septic Systems), read 2026-09-13.

Source: Texas Department of Licensing and Regulation, Electricians program, read 2026-09-13.

Source: Texas State Board of Plumbing Examiners, read 2026-09-13.

Source: TCEQ, Getting a Permit for an On-Site Sewage Facility, read 2026-09-13.

Source: TCEQ Edwards Aquifer Protection Program home page, read 2026-09-13.

Source: Travis County Transportation and Natural Resources, Development Services, read 2026-09-13.

Source: Bastrop County Development Services, read 2026-09-13.

Source: Burnet County On-Site Sewage Facilities and Development Services, read 2026-09-13.

Source: Llano County Development Services, read 2026-09-13.

Source: Williamson County frequently asked questions, County Engineer, read 2026-09-13.

Source: Caldwell County Development Ordinance, revised February 14, 2023, read 2026-09-13.