iModular.com connects Texas schools, churches, contractors, and businesses with modular buildings and portable classrooms for sale or rent — and gives you a direct, nationwide path to sell a used building you no longer need. Complete the short form below and vetted suppliers will respond with pricing in minutes, or call the National Modular Building Helpline at (800) 806-7485. Matt Banes, iModular.com’s president, answers that line personally, seven days a week.
Have a used modular building or portable classroom in Texas you need to sell or trade in instead? iModular.com buys modular buildings nationwide — call (800) 806-7485 and ask for Matt directly.
Why Texas buyers work with iModular.com
Most modular building websites route you straight to a quote-only chatbot. iModular.com has been in the modular building business since 1998, and the phone is answered by the same person who runs the company — not a call center. Whether you’re a school administrator sourcing classroom space for the next school year, a facilities director backfilling swing space during a renovation, or a contractor who needs a job-site office on short notice, you get a straight answer about sizing, permitting, and timeline before you commit to anything.
Our process is the same one we use on every California project we deliver directly: right-size the building to actual occupancy and use, confirm what the state and local jurisdiction will require before you’re surprised by it, and coordinate delivery so the building lands ready for its final inspection. As one example of that process in practice, we remodeled, delivered, and installed a 24′×40′ office with a handicap-access ramp for the San Gabriel County Water District in California. For Texas projects, we apply that same sizing and permitting know-how to scope your project and connect you with the right supplier and delivery partner — ask us how that works for your site.
Texas modular building codes: what TDLR requires
Texas regulates modular buildings differently than most states, and it catches a lot of first-time buyers off guard. Commercial modular buildings and industrialized housing built at a factory and transported to a Texas site fall under the Texas Department of Licensing and Regulation\u2019s Industrialized Housing and Buildings (IHB) Program — Chapter 1202 of the Occupations Code, Title 16 of the Texas Administrative Code, Chapter 70. TDLR licenses the manufacturers, requires inspection of each building at the factory by a Texas-approved third-party inspector, and issues a permanent TX insignia (decal) once the building passes — the Texas equivalent of the state approval label California buyers see from HCD.
Since July 1, 2024, industrialized housing and buildings built in Texas must comply with a specific set of mandatory codes:
- International Building Code (IBC), 2021 Edition
- International Residential Code (IRC), 2021 Edition
- International Fuel Gas Code (IFGC), 2021 Edition
- International Mechanical Code (IMC), 2021 Edition
- International Plumbing Code (IPC), 2021 Edition
- International Energy Conservation Code (IECC), 2015 Edition
- International Existing Building Code (IEBC), 2021 Edition
- National Electrical Code (NEC), 2020 Edition
TDLR’s IHB program certifies the building unit itself. Your local city or county still handles the site-specific side — the installation permit, foundation, and utility connections — the same split you’ll find in most states. Because requirements can vary by jurisdiction and by how the building will be used, always confirm scope with TDLR and your local building department before finalizing a project; we walk every Texas buyer through this before you sign anything. See our full TDLR certification guide for the details.
Moving a modular building in Texas
Texas gives modular and portable buildings their own transport permit rather than lumping them in with general oversize freight. The TxDMV Portable Building Single-Trip Permit covers a load up to 14 feet high and 80 feet long for a flat $15 fee — multiple modules can even be loaded end-to-end at their narrowest width, up to 80 feet of total length with no more than 4 feet of rear overhang. Anything larger needs a general single-trip permit instead, which runs $60 plus a weight-based highway maintenance fee.
Escort (pilot car) requirements for manufactured housing and portable buildings kick in at 16 feet wide (one escort) and 18 feet wide (front and rear escorts). Our standard modules ship at 12 feet wide — comfortably under that threshold — which keeps most Texas deliveries logistically simple. We handle the permit application and escort coordination as part of every delivery, so you never have to interpret TxDMV paperwork yourself. See our full transport permit guide for the details.
Modular buildings for every Texas industry
Texas’s growth is putting pressure on space across every sector we work in — not just schools. We source, deliver, and help permit modular buildings for:
- Private schools and churches — classrooms, admin offices, and worship or fellowship space, including many fast-growing congregations and private schools across the Houston, Dallas–Fort Worth, San Antonio, and Austin metros
- Oil, gas, and energy field offices — dispatch offices, crew quarters, and equipment shelters for operators working the Permian Basin, Eagle Ford, and other Texas plays
- Construction site offices — job-site trailers for general contractors and developers keeping pace with Texas’s construction volume
- Government and municipal buildings — field offices and admin space for cities, counties, and districts (many Texas public entities buy through cooperative purchasing contracts such as BuyBoard or TIPS-USA — ask us how that affects your procurement timeline)
- Commercial and industrial buyers — sales offices, break rooms, and support buildings for manufacturing, logistics, and retail operations
Frequently asked questions
Do I need a permit to install a modular building in Texas?
Yes. The building itself is certified through TDLR’s Industrialized Housing and Buildings program before it ever leaves the factory, and your local city or county handles the separate installation permit covering the foundation and site utility connections.
How much does a modular building cost in Texas?
Pricing depends on size, condition, and whether you buy or rent. For a full breakdown of what drives modular building pricing, see our modular building cost guide, or request pricing above for numbers specific to your project.
Can I move a used portable classroom within Texas without a special permit?
No — any load exceeding Texas’s standard legal size limits needs a TxDMV permit, but Texas makes this easy for portable buildings specifically: the dedicated Portable Building Single-Trip Permit is a flat $15 for loads up to 14 feet high and 80 feet long, far simpler than a general oversize freight permit.
Matt Banes, iModular.com President — California and Texas modular building specialist. iModular.com has bought, sold, and delivered modular buildings and portable classrooms nationwide since 1998. Last updated: September 16, 2026.
Explore more
- What types of modular buildings are available?
- How much does a modular building cost?
- Should I rent or buy a portable classroom in Texas? \n
- Modular buildings for Texas private schools & churches
- Get pricing in another state