What’s the difference
between “Manufactured” and “Modular” homes?
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A Manufactured home was commonly referred to as a “mobile” home and is
built to a standard called the “FEDERAL CONSTRUCTION SAFETY STANDARDS ACT”
(HUD/CODE). These homes generally are designed with a permanent “steel frame”,
are considered movable, and carry a “title”. Manufactured homes must be complete
with a heating system and water heater from the factory. Most
manufacturers include a range, refrigerator and floor coverings in their base price. Manufactured
homes are generally set on a cement floating slab ( “engineered” design or
designed by the manufacturer) or on concrete piers that extend below the frost level. Manufactured homes can be set on a basement, but
require a special “perimeter” frame system. A manufactured HUD home on a
basement does not make it a “Modular” home.
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A "Modular" home is built to the same code as a licensed, bonded contractor "site
built" home, the International Residential Code (IRC).
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The term “Modular” is used to identify the differing building techniques
between manufactured and modular homes. “Modular” homes are built with the following features as part of their inherent code: 2"x10"
floor joist 16" on center, double 2"x10" perimeter rim joist, 2"x6" exterior
wall studs 16" on center, 2"x4" interior wall studs 16" on center, 2"x4"
roof rafters with a 42 lb. snow load, 1/2" drywall through out the interior
walls, 5/8" drywall on the ceiling, either copper or pex plumbing stubbed through the
floor, low flow water closets, porcelain sinks, all white PVC for gray water stubbed through the floor, flat ceiling
standard, vaulted ceilings optional, pre-wired 200 amp service panel, and
custom floor plans designed by you.
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A “Modular” home must be set on a “frost free” foundation (crawl space with
slab floor) or a basement. A modular home is a permanent set. This home becomes
“Real Estate” once set on the foundation. Because of all the code mandates and
its permanent set, the modular home will do very well at time of
“re-sale”.
THINGS TO LOOK FOR TO IDENTIFY THE TWO
TYPES OF HOMES.
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Steel frame: Manufactured HUD home.
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Title applicable: Manufactured HUD home.
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Attic access panel: IRC Modular home. An IRC modular must have this, HUD
does not!
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16" or larger eve overhang: IRC Modular home.
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“TOTAL” custom floor plans: IRC Modular home. The home buyer can design
their own floor plan.
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Wood clad interior, aluminum clad exterior windows: IRC Modular home.
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All copper plumbing: IRC Modular (some factories are now running PEX to a central location).