Walk onto any home lot in San Antonio and you'll hear all three words in the same conversation. A customer asks about "mobile homes," the salesperson shows a "manufactured home," and somebody's cousin swears a "modular" is the better deal. The confusion is understandable, because all three are built in a factory. The difference is which rulebook they're built to — and that one detail follows the home for the rest of its life. Before you compare a single floor plan or price, it pays to know exactly which of the three categories you're looking at, because the label on the paperwork changes what a lender will offer you, what an insurer will charge, and how the state of Texas records who owns it.
What is a mobile home?
A mobile home is a factory-built house made before June 15, 1976. That's the whole definition. Before that date, there was no federal building standard for factory homes — quality ranged from solid to scary, and each state (or nobody) set the rules. The word "mobile" stuck because these homes rolled out of the factory on wheels and were expected to move again.
In everyday Texas speech, "mobile home" still means any factory-built home of any age — we even use it in our own business name, because it's the phrase people actually say. But on paper, a true mobile home is a pre-1976 unit. That age brings real limits: most banks won't lend on one, many insurers won't write a policy, and quite a few mobile home parks won't accept a home that old. If you're looking at a pre-1976 home priced cheap, that price reflects those limits.
What is a manufactured home?
A manufactured home is a factory-built house made on or after June 15, 1976, when the federal HUD code took effect. It's built on a permanent steel chassis, shipped to the site in one or more sections (that's the "singlewide" or "doublewide" you hear about), and installed on a foundation. Every section is inspected in the factory and carries a small red metal certification label — proof it meets the HUD code. Part 2 of this handbook explains that code in detail.
This is the category nearly every "mobile home" for sale in Texas today actually belongs to. A 2026-model doublewide with a farmhouse kitchen and a soaker tub is a manufactured home. So is a 1985 singlewide. Both meet a federal standard; the newer one just meets a newer version of it.
One more thing that surprises buyers: in Texas, a manufactured home can be titled as personal property (like a vehicle) or as real property (like a house), depending on whether it's attached to land you own. That election happens through the state's Statement of Ownership, and it drives the financing options covered in Part 4.
What is a modular home?
A modular home is also built in a factory — but to the same local building codes as a site-built house (in Texas, that's the International Residential Code, as adopted by your city or county). It ships in boxes or panels, gets assembled on a permanent foundation by a builder, and once finished, it's legally just a house. No steel chassis, no red HUD label, no Statement of Ownership.
Because a modular home is treated like site-built construction, it qualifies for ordinary mortgages and standard homeowners insurance from day one. It also usually costs more than a comparable manufactured home — the local-code route means heavier engineering, a costlier foundation, and more on-site labor. Modular makes sense for buyers who want factory efficiency but need the home treated identically to site-built, whether for appraisal, neighborhood deed restrictions, or resale plans.
Why does June 15, 1976 matter so much?
That's the day the National Manufactured Housing Construction and Safety Standards took effect — the HUD code. Congress passed the law after years of factory homes with no consistent standards for fire safety, wiring, or wind resistance. From that morning forward, every factory home sold in the United States had to pass inspection against one federal rulebook.
The date works like a bright line across the whole industry:
- Lending: FHA, VA, and most conventional programs only touch homes built after June 15, 1976. Pre-code homes are cash or specialty-loan purchases.
- Insurance: Many Texas carriers set 1976 as a hard cutoff; others price pre-code homes much higher.
- Parks and communities: Lots of San Antonio-area communities set a minimum home age, and pre-1976 units rarely make the cut.
- Moving: Some counties and transporters restrict moves of pre-code homes entirely.
If you remember one date from this whole handbook, make it this one.
How do the three types compare side by side?
| Feature | Mobile home | Manufactured home | Modular home |
|---|---|---|---|
| Built | Before June 15, 1976 | June 15, 1976 or later | Any year |
| Building code | None / varied by state | Federal HUD code | Local code (IRC) |
| Chassis | Permanent steel frame | Permanent steel frame | None — set like site-built |
| Certification | None | Red HUD label + data plate | State/local inspection tags |
| Texas title | Statement of Ownership | Statement of Ownership (personal or real property) | Deed, like any house |
| Financing | Cash / limited | Chattel loan or mortgage | Standard mortgage |
| Typical cost | Lowest | Middle | Highest of the three |
How can you tell which type a home actually is?
Don't take the listing's word for it — sellers mix these terms up too. Check the home itself:
- Look for the red certification label. A manufactured home has a red metal HUD tag, about the size of an index card, riveted to the outside of each section, usually low on the rear wall. One tag per section — a doublewide has two.
- Find the data plate. Inside a manufactured home — commonly in the electrical panel door, under the kitchen sink, or in a bedroom closet — a paper data plate lists the manufacture date, factory, serial numbers, and the wind and snow zones the home was built for.
- No label or plate? The home is either pre-1976 (a true mobile home), a modular (check for a local-code inspection tag, often near the electrical panel), or a manufactured home whose label was painted over or removed. Labels are never reissued, but the home's record can be verified through IBTS, the national records agency, using the serial number.
- Check the Texas record. TDHCA's Manufactured Housing Division keeps ownership and location records for every manufactured home in the state. A quick online search of the label or serial number shows what the state thinks the home is.
Which type should you buy?
There's no single right answer — it depends on your land, your budget, and your timeline. As a rough compass: if you want the lowest cost per square foot and you're settling on family land or in a community, a manufactured home is usually the value play. If your deed restrictions demand site-built construction or you want the simplest possible resale story, look at modular. And if a pre-1976 mobile home tempts you with a low price, budget for cash, limited insurance, and a home that likely can't move again.
Whatever direction you lean, run the numbers first — Part 3 covers what manufactured homes really cost, and Part 5 walks the purchase step by step. Or skip the reading and ask us your specific question — no charge, no obligation.
Frequently asked questions
Is a doublewide a manufactured home or a modular home?
A doublewide is a manufactured home built in two sections. "Singlewide" and "doublewide" describe size, not category — both are HUD-code manufactured homes with a red label on each section.
Can a manufactured home become real property in Texas?
Yes. If the home sits on land you own and is attached to it, you can elect real property status on the Statement of Ownership filed with TDHCA. That opens the door to mortgage financing and changes how the home is taxed.
Are today's manufactured homes built better than old mobile homes?
Dramatically. The HUD code sets federal standards for structure, fire safety, wiring, plumbing, energy use, and wind resistance, and it has been updated many times since 1976. A new manufactured home shares almost nothing with a 1970 trailer except the factory it started in.
Do manufactured homes lose value?
It depends mostly on the land. A home titled as personal property on rented ground tends to depreciate like a vehicle. The same home attached to owned land as real property often follows the land market — and land in the San Antonio area has been a strong performer.
What's a "park model" — is that a fourth category?
Park models are recreational units under 400 square feet, built to an RV standard rather than the HUD code. They're vacation or guest quarters, not primary residences, and most lenders and counties treat them like RVs.