How Much Does it Cost to Replace a Subfloor in a Mobile Home

A subfloor in a mobile home is an essential component that provides the foundation for the finished flooring. Damage to the subfloor can happen for many reasons. Some of the most common causes include moisture and water leaks, pests, and age.

The common signs of damage to the subfloor on mobile homes as warping, rot, or soft or spongy spots on the floor. If you notice any of these signs, it’s best to replace them soon. But how much will it cost? The cost can vary depending on the square footage of your mobile home and a few factors. Let’s take a look at some of the most critical factors.

Factors that Affect the Cost to Replace a Subfloor in a Mobile Home

In addition to labor costs and the size of your home, the following factors can affect the final cost of subfloor replacement in a mobile home:

Materials used

There are a few options for materials to replace a subfloor in a mobile home. Each has its pros and cons and can impact the cost. Here are a few examples:

  • Plywood: This is a popular and affordable option. It is durable, easy to install, and offers a good base for a variety of flooring options.
  • Particleboard: This is a less expensive option than plywood, but it is not as durable. It is more susceptible to moisture damage, warping, and pest infestation.
  • OSB: Oriented Strand Board is a kind of engineered wood made from compressed wood chips. It is more affordable than plywood and is more moisture-resistant.
  • Concrete: This is a more expensive option, but it is durable and resistant to moisture. It is also a good option for mobile homes located in areas with high water tables.
  • Laminate: This is an easy-to-install, affordable, and durable option. It is best to use as a finish flooring option.

Condition of the existing subfloor

The condition of the current subfloor can have many impacts on the cost of replacing it. Here are a few things that may incur additional expenses:

  • Damage: If the existing subfloor is damaged, it will need to be repaired or replaced before the new one can be installed.
  • Age: An older subfloor may have been exposed to moisture or rot, which causes it tougher to repair or replace.
  • Type of subfloor: The types of current subfloor can also affect the cost of replacing it. For example, if the subfloor is made of particleboard, it may need to be replaced with a more durable material such as plywood.
  • Leveling: If the existing subfloor is not level, it can add costs as additional work will be needed to level it out before installing the new subfloor.
  • Pest infestation: If there is any pest infestation, it will need to be treated before replacing it with the new subfloor.

Estimated Cost to Replace a Subfloor in a Mobile Home

When estimating the cost of subfloor replacement in a mobile home, it’s necessary to calculate the size, location, and materials used. Here are some examples to give you an idea of what to expect:

  • For a 1,000-square-foot single-wide mobile home, the cost could be between $5,000 and $10,000.
  • For a 1,500-square-foot double-wide mobile home, the cost could be between $7,500 and $15,000.
  • For mobile homes over 1,500 sq. ft, the cost could be between $10,000 and $20,000 or even more.


Replacing a subfloor in a mobile home is a big decision and requires careful consideration. By understanding the factors that affect the cost replacement of a subfloor and seeing real-world examples, you can make an informed decision on whether this renovation is good for you. Don’t forget to gather multiple quotes and select a contractor with the experience and reputation to deliver quality work. So, take your time, and make an educated decision that will bring you the satisfaction you deserve.