Inside Luling the city permits it instead. Two of the three county rules here are new this year: a fire code effective August 13, 2026, and a flood ordinance effective June 10, 2026.
Keep reading
The county adopts no building code of its own.
Inside Luling
City permit for all construction, storage buildings named
Luling requires a permit for all construction and installation projects in the city, residential and commercial, including new buildings, additions, foundations, driveways and storage buildings, with plan review and inspections by a contract engineering firm.
What the county's page says
Its 2023 commercial permit packet bases commercial permits on the 2018 International Building Code family and the 2017 National Electrical Code, while an older process document on the site still names the 2009 codes; the fee schedule sets the commercial building permit at $15 for the first $1,000 of value and a sliding rate per $1,000 above it, plus plan review at half the permit fee plus the engineer's cost.
Source City of Luling permits and inspections, 509 E. Crockett St. (mailing), 2510 E. Pierce St. (physical), read 2026-09-20.
Unincorporated Caldwell County
County site construction permit for commercial work; no county building code
The Caldwell County Development Ordinance, adopted March 24, 2020 and amended February 14, 2023, requires a construction permit with engineer-certified drawings before land clearing or construction for any subdivision or site construction, with commercial site plans approved by the County Engineer.
What the county's page says
Commercial site construction is all construction, grading or added impervious cover not otherwise exempt; one- to three-family residences with their garages, sheds, barns and other outbuildings, agricultural structures not intended for common public use, and agricultural improvements generating fewer than 50 daily trips are excluded.
Source Caldwell County Development Ordinance, revised February 14, 2023, and the subdivision and development fee schedule, read 2026-09-20.
Which office has your lot decides everything below.
Which office permits a metal building in Caldwell County?
The county, unless the lot sits inside a city. The Caldwell County Development Ordinance, amended February 14, 2023, takes a construction permit with engineer-certified drawings before land clearing or construction. It excludes one- to three-family residences with their outbuildings, and agricultural structures not intended for common public use.
The set goes to the county's contract engineer before an intake meeting, and technical review runs 30 business days once that meeting deems it complete. The permit starts at $500 and doubles if work starts before approval. Sanitation and Development Services, 1700 FM 2720, Lockhart, (512) 398-1803.
A second county permit applies from August 13, 2026, when the Commissioners Court adopted a fire code based on the 2024 International Fire Code. Local Government Code Chapter 233 limits a county fire code to public buildings, commercial establishments and multifamily dwellings of four or more units; warehouses are on the county's commercial list. The court has 30 days to issue or deny, and occupancy waits on a certificate of compliance.
None of that travels across a county line. Both ends of the range are on metal building permits in Austin and Travis County; the neighbors keep their own sheets, Bastrop and Travis.
From each county's own record, read 2026-09-20.
On a phone this table scrolls sideways.
| County | Outside its cities, for a commercial metal building |
|---|---|
| Caldwell | Site construction permit, engineer-certified drawings, plus a fire code permit from August 13, 2026 |
| Bastrop | Development permit only. No building permit, no certificate of occupancy, no fire code |
| Travis | Development (Non-Residential) permit, engineer-sealed site plan, plus a Fire Marshal permit |
SourcesTexas Legislature Online, Local Government Code Chapter 233, county regulation of housing and other structures, read 2026-09-20; Caldwell County Development Ordinance, revised February 14, 2023, and the subdivision and development fee schedule, read 2026-09-20; Caldwell County Fire Code adopted August 13, 2026, and the order adopting it, read 2026-09-20; Bastrop County Development Services, and the Development Services application fees, read 2026-09-20; Travis County TNR Development Services, Commercial Site Plan, read 2026-09-20; Travis County Fire Marshal, permits and plan reviews, and Travis County Code Chapter 201, read 2026-09-20.
Floodplain, septic and the right-of-way permit in Caldwell County
Three more county permits, one office. The Flood Damage Prevention Ordinance effective June 10, 2026 requires a Floodplain Development Permit for all construction and development in the mapped flood zones and makes the Director of Sanitation the Floodplain Administrator. Within 300 feet of a floodplain the finished floor sits two feet above base flood elevation, and the driveway is a right-of-way permit on that same form.
TCEQ's directory lists Caldwell County as the septic authorized agent outside the cities, with Mustang Ridge, San Marcos, Uhland and Niederwald covering their own limits. On a commercial site the septic and site construction applications are filed and processed together. The rest of that path is on commercial septic, water and electric for a shop or warehouse.
SourcesCaldwell County Flood Damage Prevention Ordinance, signed May 14, 2026, the floodplain application and the Subdivision and Development Fee Schedule, read 2026-09-20; Caldwell County, sanitation and development services, and the septic permit application packet, read 2026-09-20; Caldwell County Development Ordinance, revised February 14, 2023, section 4.6 and Appendix C, read 2026-09-20.
Inside Lockhart or Luling, who issues the permit?
The city does, and the two sit differently here. Luling requires a permit for all construction and installation projects in the city, residential and commercial, and its own list names storage buildings, read at the city's permits page on 2026-09-20. Lockhart, the county seat, runs its own permits, and no Lockhart page was read here, so nothing about its rules is stated. Martindale, Mustang Ridge, Uhland and Niederwald run their own permits too.
In a city's extraterritorial jurisdiction the ordinance says permitting follows any interlocal agreement, and where none exists both the city and the county approve, the stricter rule prevailing.
SourceCaldwell County Development Ordinance, revised February 14, 2023, section 1.1, read 2026-09-20.
Clays northwest, Carrizo sands southeast: the ground under Caldwell County
Caldwell County is two grounds. The 1978 USDA soil survey of Caldwell County puts the western two-thirds in the Texas Blackland Prairie, mostly deep clays or clay loams, and the eastern third in the Texas Claypan area with sandy surface layers. It rates the Crockett-Heiden association, about 41 percent of the county, high for shrink-swell potential and high for corrosivity to uncoated steel. Southeast, the Demona-Patilo-Silstid sands formed in the Carrizo Sand cover about 22 percent.
Occupations Code 1001.056 exempts a one-story building of no more than 5,000 square feet with no clear span over 24 feet from engineering licensing, and withdraws that exemption for a residential slab on expansive soil unless the work meets the International Residential Code as the jurisdiction applies it. Caldwell County asks for engineer-certified drawings anyway, so a Texas professional engineer seals the set. The design side is on the concrete slab and foundation for a metal building.
SourcesTexas Legislature Online, Occupations Code Chapter 1001, engineers, read 2026-09-20; Caldwell County Development Ordinance, revised February 14, 2023, and the subdivision and development fee schedule, read 2026-09-20.
What do metal building contractors in Caldwell County line up beyond the county permits?
Three state items sit on top of the county's answer. TDLR takes no registration or plan review under $50,000 in total estimated cost, the Texas Accessibility Standards still apply there, and $50,000 or more submits a full set of construction documents under Administrative Rule 68.50. TCEQ stormwater coverage starts at one disturbed acre, or less inside a larger common plan. Constructing, altering or repairing a septic system takes a permit.
Pedernales Electric Cooperative's tariff, effective June 1, 2026, lists Caldwell among the counties it may serve. Bluebonnet Electric Cooperative runs a retail center in Lockhart; its service-area page names no counties, so the line design appointment at (800) 842-7708 answers its footprint here. A driveway onto a state highway goes to the TxDOT district office on Form 1058, and the state right of way stays untouched until that permit is executed and the district has its notice.
The whole sequence is on building a metal building in the Austin area. A commercial metal building or a metal shop or workshop is priced by an independent local metal building contractor who works Caldwell County.
SourcesTexas Department of Licensing and Regulation, Architectural Barriers frequently asked questions, read 2026-09-20; Texas Commission on Environmental Quality, stormwater general permit for construction activities (TXR150000), read 2026-09-20; Texas Commission on Environmental Quality, getting a permit for an OSSF such as a septic system, read 2026-09-20; Pedernales Electric Cooperative, service for individual residential or commercial locations, and the tariff and business rules, read 2026-09-20; Bluebonnet Electric Cooperative, line extensions, line design appointment, and the commercial developers package (revised June 4, 2024), read 2026-09-20; Texas Department of Transportation, Access Management Manual, chapter 2 section 4, permits, and the Use of Right of Way by Others Manual, access driveways, read 2026-09-20.
The permit stack in Caldwell County, TX
Every permit and rule this county publishes for work outside its cities, with the office to call, the number, where it was read and when.
| Authority | What the county's site says | Office | Source |
|---|---|---|---|
| Building permit outside city limits | The Caldwell County Development Ordinance, adopted March 24, 2020 and amended February 14, 2023, requires a construction permit with engineer-certified drawings before land clearing or construction for any subdivision or site construction, with commercial site plans approved by the County Engineer. Commercial site construction is all construction, grading or added impervious cover not otherwise exempt; one- to three-family residences with their garages, sheds, barns and other outbuildings, agricultural structures not intended for common public use, and agricultural improvements generating fewer than 50 daily trips are excluded. A Commercial Site Construction Permit application needs engineer-certified drawings, an engineer's summary letter, proof of TDLR registration, a deed, tax certificates, a cost estimate, proof of potable water and, where they apply, concurrent septic and driveway applications; within 300 feet of a floodplain the finished floor sits two feet above base flood elevation. The ordinance adopts no building code and does not say whether a detached accessory building on a residential lot needs any county permit. The fee schedule sets a Site Construction Permit at $500 under $10,000 of construction cost, $500 plus $15 per $1,000 above $10,000 up to $1 million, and $15,350 plus $7.50 per $1,000 above that, doubled if work starts before approval; a Residential Construction Permit is $225. The application goes to the county's contract engineer before an intake meeting, and technical review takes 30 business days after the intake meeting deems it complete. | Caldwell County Sanitation and Development Services, 1700 FM 2720, Lockhart, (512) 398-1803 | Caldwell County Development Ordinance, revised February 14, 2023, and the subdivision and development fee schedule, read 2026-09-20 |
| County fire code permit for a commercial building | The Commissioners Court adopted a Caldwell County Fire Code based on the 2024 International Fire Code, effective August 13, 2026, under Local Government Code Chapter 233, Subchapter C. It applies in the unincorporated county to public buildings, commercial establishments (a list that includes warehouses, general offices and shopping centers) and multifamily dwellings of four or more units, and no one may build or substantially improve such a project without a permit under the code; the commercial site development permit is reviewed for fire code compliance, and the building itself needs separate fire code permits as the Fire Code Official determines, inspected by the County Fire Marshal's Office. The fee is $480 for a building up to 5,000 square feet and $672 plus $0.05 per square foot above 5,000, covering plan review, permit issuance and up to two inspections, with a separate permit for each structure. The fire code names the Fire Marshal's Office at 110 S. Main St., Lockhart, and no county page read gives a phone number for it. | Caldwell County Fire Marshal's Office, 110 S. Main St., Lockhart | Caldwell County Fire Code adopted August 13, 2026, and the order adopting it, read 2026-09-20 |
| Floodplain development permit | The Flood Damage Prevention Ordinance signed May 14, 2026 and effective June 10, 2026 requires a Floodplain Development Permit for all construction and development in the mapped flood zones and appoints the Director of Sanitation as Floodplain Administrator; violations are a misdemeanor fined up to $500 per violation. The county's Subdivision and Development Fee Schedule lists a floodplain permit or revision at $750, with the consultant's review cost passed through to the applicant on top of that. The application, which doubles as the right-of-way and driveway permit application, is emailed to the county's contract engineer before an intake meeting. | Caldwell County Sanitation and Development Services, Floodplain Administrator, (512) 398-1803 | Caldwell County Flood Damage Prevention Ordinance, signed May 14, 2026, the floodplain application and the Subdivision and Development Fee Schedule, read 2026-09-20 |
| On-site sewage facility (septic) permit | Septic permits, inspections and complaints are handled by appointment through the Sanitation and Development Services office; TCEQ's directory lists Caldwell County as authorized agent for the unincorporated county, with Mustang Ridge, San Marcos, Uhland and Niederwald each covering their own city limits. For commercial site construction served by septic, the septic application is filed with the site construction application and the two are processed together. The septic packet lists $400 for a single-family conventional system and $450 for an engineered system, says an approved permit is good for one year, that review takes five days after a complete submittal and inspections need 24-hour notice, and that an engineered design is required for Type 1a soil, a floodplain site or a restricted subdivision; the packet lists no fee for a commercial system. | Caldwell County Sanitation and Development Services, 1700 FM 2720, Lockhart, (512) 398-1803 | Caldwell County, sanitation and development services, and the septic permit application packet, read 2026-09-20 |
| Driveway permit onto a county road | Any driveway construction, expansion or rehabilitation, utility work, fill, grading or paving in the county right-of-way requires a Work in the Public Right-of-Way Permit under the Development Ordinance; up to three driveways with a combined width of 30 feet may be permitted per lot, and right-of-way permits expire six months from issuance. The application is the same form as the floodplain application and goes to the county's contract engineer. The Unit Road Department page carries only contact details and does not mention driveway permits. | Caldwell County Sanitation and Development Services, (512) 398-1803 | Caldwell County Development Ordinance, revised February 14, 2023, section 4.6 and Appendix C, read 2026-09-20 |
| Extraterritorial jurisdiction coordination | Inside a city's extraterritorial jurisdiction, permitting follows any interlocal agreement; where none exists, development has to be approved by both the municipality and the county, with the more stringent provisions prevailing. | Caldwell County Sanitation and Development Services, (512) 398-1803 | Caldwell County Development Ordinance, revised February 14, 2023, section 1.1, read 2026-09-20 |
Caldwell County's two 2026 rules, the August 13 fire code and the June 10 flood ordinance, sit in the permit directory beside what the other five counties ask. All six counties on one sheet: the Central Texas metal building permit directory.
Inside the cities
| City | What the city's site says | Department | Source |
|---|---|---|---|
| Luling | Luling requires a permit for all construction and installation projects in the city, residential and commercial, including new buildings, additions, foundations, driveways and storage buildings, with plan review and inspections by a contract engineering firm. Its 2023 commercial permit packet bases commercial permits on the 2018 International Building Code family and the 2017 National Electrical Code, while an older process document on the site still names the 2009 codes; the fee schedule sets the commercial building permit at $15 for the first $1,000 of value and a sliding rate per $1,000 above it, plus plan review at half the permit fee plus the engineer's cost. | City of Luling permits and inspections, 509 E. Crockett St. (mailing), 2510 E. Pierce St. (physical), (830) 875-2481 | City of Luling permits and inspections, 509 E. Crockett St. (mailing), 2510 E. Pierce St. (physical), read 2026-09-20 |
Also inside this county, each with its own permit office to confirm with: Lockhart, Martindale, Mustang Ridge, Uhland, Niederwald.
The ground under Caldwell County, and the documents that describe it
The 1978 soil survey puts the western two-thirds of Caldwell County in the Texas Blackland Prairie, mostly deep clays or clay loams, and the eastern third in the Texas Claypan area with sandy surface layers. The Crockett-Heiden association is the largest at about 41 percent, and the survey says these soils have high shrink-swell potential and high corrosivity to uncoated steel, so construction sites need extensive study; the Branyon-Lewisville association, about 13 percent, has high to very high shrink-swell potential. The survey states outright that cracked streets, pavements and house foundations on a given soil are related to its high shrink-swell potential. Source: USDA Soil Conservation Service, Soil Survey of Caldwell County, Texas (1978), introduction, general soil map and how the survey was made, read 2026-09-20.
The Demona-Patilo-Silstid association, deep sandy soils, is about 22 percent of the county, formed in the Carrizo Sand in the southeast; the Wilcox Group crops out in the central third, and the clayey Burleson, Ferris, Heiden and Houston Black soils formed in the Navarro Group in the northwest. Most ground water in storage is in the Carrizo Sand and the Wilcox Group in the southeastern part of the county, and the Navarro Group in the northwest does not yield good-quality water in most places. Source: USDA Soil Conservation Service, Soil Survey of Caldwell County, Texas (1978), parent material and water supply, read 2026-09-20.
Asked before pricing
Do metal building contractors in Caldwell County need a county permit outside the cities?
For commercial work, yes. The Caldwell County Development Ordinance revised February 14, 2023 takes a construction permit with engineer-certified drawings before land clearing or construction, and the County Engineer approves commercial site plans. It excludes one- to three-family residences with their outbuildings and agricultural structures not intended for common public use.
What changed when Caldwell County adopted a fire code on August 13, 2026?
A second county permit appeared. The Commissioners Court adopted a code based on the 2024 International Fire Code, effective that date, and no one may build or substantially improve a public building, a commercial establishment such as a warehouse, or a multifamily dwelling of four or more units in the unincorporated county without a permit.
What does Caldwell County ground do to a metal building slab?
It moves, and it is rated corrosive. The 1978 USDA soil survey rates the Crockett-Heiden association, about 41 percent of the county, high for shrink-swell potential and high for corrosivity to uncoated steel, and says sites in it need extensive study. That is the county, not your parcel.
How long does a commercial site construction permit take in Caldwell County?
The county's own figure is 30 business days of technical review, counted from the intake meeting that deems the application complete, under the Development Ordinance revised February 14, 2023. A septic or right-of-way application filed with it is processed alongside it.
Free estimate, six questions
Price a metal building in Caldwell County
The county tells a contractor which permit office your lot answers to. The building and the timing tell them what to look at first. Pricing it is free, and you owe nothing either way.
Ready to put a price on the building?
Your request goes to an independent local metal building contractor serving Central Texas, not a national lead list. Pricing it is free, and you owe nothing either way.
Last reviewed 2026-09-20.