Types of Manufactured Home Foundations

Pier and beam foundation prepared for a CrossMod manufactured home, with two houses on either side and a crane in the background

Learn more about the different foundation options for manufactured homes. From pier and beam to a slab, basement or crawl space, we’ll go over the different features to help you decide which one is the best fit for your needs.

A home’s foundation is key to keeping it strong, sturdy and secure. In addition to supporting and distributing the home’s weight, the foundation also keeps out moisture, pests and the elements.

When you purchase a new manufactured home, there are several types of foundations to choose from. Each have different features, as well as potential pros and cons. Your local home center consultant can help you evaluate which one is the right fit for you depending on factors like the layout of your land, climate, local building codes and your budget or financing.

Common manufactured home foundations include:

  • Pier and beam foundation
  • Crawl space
  • Slab foundation
  • Basement foundation

Some types of foundations are considered permanent, like you’d find with a traditional site-built home. Others are non-permanent, which can affect potential appreciation or resale value but means you may be able to move the home in the future.

Now, let’s take a closer look.

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Pier and Beam Foundation

The pier and beam foundation system is widely used for manufactured homes. This system uses one or more metal platforms that are placed under the foundation piers. Steel bracing then secures the platforms to the I-beams under the home.

Pier and beam foundations:

  • Are one of the most affordable types of foundations
  • Typically take less time to build than other systems
  • Can be used in areas that see seismic activity, floods or heavy frost
  • Are not typically a type of permanent foundation
  • Could potentially shift over time
  • Mean your home will be raised off the ground and have skirting, which can affect its curb appeal. You may also need to have stairs or a ramp installed

Runner Foundation

Runner foundations have runners made of concrete, gravel or stone, and steel that go along the length of the home to create beams or pads to support it.

Runner foundations:

  • Are also an affordable option
  • Are a good choice for a flat lot
  • Make it easier to access utility connections under the home
  • May be best for drier climates, as they do not always allow for a lot of ventilation
  • Are not recommended in areas that see seismic activity

Slab Foundation

There are several different types of slab foundations, but they typically sit on top of the ground with ground anchors that are embedded in concrete. A slab foundation needs to be insulated around its perimeter to help keep the ground beneath the foundation warmer and your home more comfortable.

Slab foundations:

  • Are often an affordable, time-efficient option
  • Can be used in areas that see seismic activity or floods
  • Can potentially be used in certain wind zones or areas that see heavy frost, depending on the specific requirements for your location
  • May not work for a sloping lot
  • Can make it difficult to access utility connections under the home
  • Are not always considered a permanent foundation, depending on how your home is anchored to it
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Crawl Spaces

A crawl space foundation, sometimes called a pit foundation, is similar to a basement. It has an excavated floor and is usually built using poured concrete footers that go into the soil and anchor the home down. The home then rests on a perimeter wall and is supported by piers strategically placed for support points, which are customized to each home.

Crawl space foundations:

  • Generally fall into the middle price range compared to other foundation options
  • Can work well if you have a sloping lot because the size of the crawl space can be adjusted
  • Offer good frost and seismic resistance
  • May not be ideal for hurricane- or flood-prone areas
  • Are a permanent foundation
  • Don’t provide the extra living space or storage of a basement

Basement Foundation

Not only does a basement provide a strong support system for your home, but it can also add extra living or storage space and potentially increase your home’s value.

Basement foundations:

  • Are the most expensive foundation option and can typically cost tens of thousands of dollars
  • Take longer to build and install due to their materials, as well as their structural design
  • Can be used on a sloping lot
  • Can be used in areas with seismic activity or frost
  • Are not recommended in flood hazard areas
  • Are a permanent foundation
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With this info, you’ll be better prepared to decide which type of foundation fits your needs and wants. All offer great support for your new manufactured home, and your home center will work with you on the specific details for the option you choose.

Want to learn more about how manufactured homes are built? From energy efficiency and construction codes to Clayton’s brand partners and more, we’re breaking down the details on the Home Building category of our Studio blog. Check it out today!

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