Holly Park – The Holly CollectionHolly Park specializes in building both manufactured and modular homes. At a glance, manufactures and modular homes often look alike. Yet, there are some important differences.
Manufactured HomesA manufactures home is built in a factory in accordance with the national building code administered by the United States Department of Housing and Urban Development (known as the HUD code). When a manufactured home arrives at the final destination, it is 80 to 90 percent complete and usually includes appliances, carpets, lights, and utilities ready for hookup.
HUD studies every manufacturer's proposed home plan to ensure it meets the code's criteria. No manufacturer is allowed to build and sell a home under the code until it is approved. HUD also inspects manufactured housing factories to assure the factory is building homes according to the code and the factory has a proper quality control system. A satisfactory inspection of properly built homes results in the attachment of a "label," literally a sticker demonstrating the home is legal.
The HUD code is a pre-emptive code. This means no state or local building official has authority over the home. However, other building taking place on site, such as the foundation, a garage, storage shed, attached porches, additional rooms or even a swimming pool would be governed by state and local codes.
Modular HomesA modular home is also built in a factory, but often a substantial amount of work is finished at the destination. Typically, any where form 70 to 90 percent of the construction is completed before being shipped to a final construction site where a local contractor sets the sections on a foundation and completes the construction. Modular houses can be three stories high, involving two, four, six or more modules or sections.
A modular home is not built to the national code. It is subject to state and local building codes, which are based on national model codes of its choosing. These codes are the very same codes governing "site-built" or "stick-built" homes.
Most states, even counties and cities, will add their own unique requirements to the code. Imagine two houses built next to each other with a state border running between them. It is entirely possible the house built in one state would not meet the state or local codes of the other state just a few feet away.
Many states inspect the homes while being built in the modular home factory. If the inspection is satisfactory, it allows a state label to be applied to the home. In some states, the state version of the model code is not pre-emptive, and local building officials have some say over the design of the home. Let's suppose that modular home factory builds homes which it sells in five or ten different states. It must get separate approval from each state, and it may also need to build to special requirements at the local level.
Because state modular codes always involve the approval of a manufacturer's "building system," you will often hear modular homes referred to as "systems-built homes."