Open/Closed Construction

Open Construction
A construction that can be inspected for building code compliance at the construction Site.

What constitutes closed construction? When an inspection can not take place at the construction site because the items are concealed at the factory. Most states require that an inspection take place periodically at the manufacturing plant when this design is used. This way they can insure that proper design and installation procedures have been followed.

Closed Construction:
A construction that can not be inspected at the construction site for building code compliance and therefore must be inspected at the manufacturing facility.

In many states, if a product is determined to be "closed construction", that state requires a license or certificate of approval which indicates that the state or a recognized 3rd party inspection group has visited the manufacturing facility and determined that the product is in compliance with the building codes.

Closed construction is common in assembled buildings with concealed or inaccessible electrical or plumbing. The most common prefabricated building that falls into this category is a trailer office or mobile home.

Closed Construction Inspections & Approval Requirements by State:

	State	Inspection	Design Approval
	Alabama	Third Party	State
	Arizona	Third Party	State
	Arkansas	N/A	N/A
	California	Third Party	Third Party
	Colorado	Third Party	Third Party
	Conneticut	Third Party	Third Party
	Delaware	State	State
	Florida	Third Party	Third Party
	Georgia	Third Party	Third Party
	Idaho	Third Party	State
	Illinois	Third Party	Third Party & State
	Indiana	Third Party or State	Third Party & State or State
	Iowa	Third Party	Third Party
	Kansas	N/A	N/A
	Kentucky	Third Party & State or State	State/IBC Optional
	Louisiana	Third Party (PE)	State
	Maine	Third Party	Third Party
	Maryland	Third Party	Third Party & State
	Massachusetts	Third Party	Third Party & State
	Michigan	Third Party	State
	Minnesota	Third Party	Third Party
	Missippi	Third Party	State
	Missouri	Third Party	Third Party
	Montana	Third Party	State
	Nevada	Third Party	State
	New Hampshire	Third Party	Third Party
	New Jersey	Third Party	Third Party
	New Mexico	Third Party Licensed Inspector	State
	New York	Third Party or State	Third Party & State
	North Carolina	Third Party	Third Party
	North Dakota	N/A	N/A
	Ohio	Third Party	State
	Oklahoma	N/A	N/A
	Oregon	State	State
	Pennsylvania	Third Party	Third Party
	Rhode Island	Third Party	Third Party
	South Carolina	Third Party	Third Party
	South Dakota	N/A	N/A
	Tennessee	Third Party	Third Party & State
	Texas	Third Party	Third Party
	Utah	N/A	N/A
	Vermont	N/A	N/A
	Virginia	Third Party	Third Party
	Washington	State	State
	West Virginia	N/A	N/A
	Wisconsin	Third Party	State
	Wyoming	N/A	N/A