Can a Modular Home Be Placed on a Concrete Slab?

Modular Home Directly on Concrete Slab

• A modular home is not placed directly onto a concrete slab. It must be placed on a full basement, pilings or a crawl space

Crawl Space

• Metal or concrete piers are placed on top of a concrete slab to create a crawl space underneath the modular home. The crawl space consists of a space between 28 and 42 inches in height between the surface of the concrete slab and the underside of the modular building. There are no other foundations that reach into the ground underneath the concrete slab. The purpose of the slab is to transmit the loading of the entire modular home into the ground below.

Piers or Piling

• One method of providing foundations for a modular home that doesn't include a concrete slab is the piling foundation method. Concrete or metal piers are installed under the main structural load points of the modular home. These piers transmit the building load into the soil in the ground below. Piers are used when loadings are large or in locations where loadings need to be transferred to more stable soil farther underground.

Basement

• A method of providing foundations for a modular home that doesn't include a concrete slab is with the use of a basement. A basement foundation consists of a concrete block or poured concrete wall constructed in an excavated area of the site. Basement foundations follow the line of the external walls exactly. Basements also increase the amount of livable space within the building.