Mobile home vs. manufactured home: what's the difference?

Pipeline Park team · Updated October 24, 2026

In short

A manufactured home is built in a factory to the federal HUD Code, which took effect June 15, 1976. "Mobile home" is the term for factory-built homes made before that date. Modular homes are factory-built too, but to the same state and local codes as site-built houses.

The short answer

People use the words interchangeably, but lenders, insurers, communities and state titling offices don't. The dividing line is a date: June 15, 1976, when the federal Manufactured Home Construction and Safety Standards (the "HUD Code") took effect.

Mobile home: a factory-built home made before June 15, 1976, before there was a national building standard.
Manufactured home: a factory-built home made on or after June 15, 1976, to the HUD Code, on a permanent steel chassis.
Modular home: built in sections in a factory, but to the state and local building codes that apply to site-built houses, and usually set on a permanent foundation.

What the HUD Code changed

Before 1976, each manufacturer set its own construction standards. The HUD Code created one national standard for design, strength, fire safety, energy efficiency, plumbing, heating and electrical systems. It has been updated several times since, including stronger wind standards in 1994 after Hurricane Andrew.

That's why a 1975 home and a 1977 home can look alike but be treated very differently. Many lenders won't finance pre-HUD homes, some insurers won't cover them, and many communities won't let one move in.

How to tell which one you're looking at

The HUD certification label

Every transportable section of a manufactured home built since June 15, 1976 carries a small metal certification label, usually on the outside at the end of the section away from the hitch. If there's no label on any section, the home may be pre-1976, or the label may have been removed during siding or skirting work.

The data plate

Inside the home, look for a paper data plate, often inside a kitchen cabinet, near the electrical panel, in a utility room or in a bedroom closet. It lists the manufacturer, serial number, date of manufacture, and the wind, roof-load and thermal zones the home was built for.

Lost labels

If the label or data plate is missing, the Institute for Building Technology and Safety (IBTS) can issue a letter of label verification for HUD-code homes, and the manufacturer may be able to supply a copy of the data plate. Lenders often ask for one of these.

Why it matters when you buy or sell

Financing. FHA, VA, USDA and conventional manufactured-home loans generally require a HUD-code home. Pre-1976 homes are usually cash deals.
Community rules. Many communities set a minimum year for incoming homes, and some won't accept homes older than a set age at all. Check before you buy a home you plan to move.
Title. Manufactured homes are usually titled like vehicles (personal property) unless they've been converted to real property with the land. That changes how you transfer ownership and check for liens.
Insurance. Expect fewer options and higher premiums for older homes, and for any home outside the wind zone it was built for.

Reading listings with this in mind

Sellers on Facebook Marketplace, Craigslist and other sites use "trailer," "mobile home" and "manufactured home" for the same thing, so the word in the title tells you little. The year does. A listing that says "1974 single wide" is a pre-HUD mobile home whatever the title says; "1998 Fleetwood 16x76" is a HUD-code manufactured home. When the year is missing, ask for a photo of the data plate before you drive out.

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General information, not legal, tax or financial advice. Rules for titles, permits, moving and installation vary by state and county, so check with your local authorities.