HUD, Modular, UBC, IBC Or IRC

You May have heard of each, But do you know the difference between HUD code and Modular or UBC, IBC, IRC code homes. Let us give you a brief explanation.

HUD Code -- (Manufactured Homes) A national “performance” code preempts all local, county and state codes. After initial and final inspections at the factory, no additional inspections need to be made to the home itself, only foundation and final inspection for occupancy.

UBC Code – (Modular Homes) designed to meet the exact building codes as site built homes for the specific state and local jurisdiction in which the home will be placed. We refer to these homes as I-Code and defines them as the following:

-2003 International Residential Building Code [IRC]
-2003 International Building Code [IBC]
-1997 Uniform Building Code [UBC]


Most of the states have adopted the 2003 IRC and IBC codes or are in the process of doing so. Therefore “the UBC Code” is becoming an obsolete code in most areas. Therefore, the phrase “I-Code” to relate to the International Building Codes is a more up to date name.