How Much Does It Cost to Replace a Subfloor?

Gary Evans
by Gary Evans

The structural integrity of your home is dependent on numerous elements working together. For instance, the finished flooring you see all the time is just one element of a complete system. That system is also typically made up of joists, underlayment, and your subflooring.

The subflooring is the layer often positioned over the joists and it is tasked with supporting and distributing the weight from above. You need it to be structurally sound or else it won’t provide the type of support you need. Over time, the subfloor you currently have may also need to be replaced and that will necessitate a significant investment on your part.

On average, the cost of replacing a subfloor is $4.25 per square foot. Commonly used materials for subfloors include concrete, plywood, and OSB and they cost approximately $6, $2, and $3 per square foot respectively. The cost of labor for subfloor replacement is right around $35 per hour. Expect to pay $28-$30 an hour if you need the old subfloor removed too.

Replacing an old and damaged subfloor is a necessity instead of an option. If that part of your home is damaged, you must get it replaced as soon as possible. Read on to gain more insight into the cost of replacing a subfloor.

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Cost to Replace Subfloor by Square Foot

Estimate TypeCost Per Square Foot
Low-End Estimate$1.50
Mid-Range Estimate$4.25
High-End Estimate$7

When you approach a contractor about replacing your subfloor, make sure to ask about their square footage rate. That’s the number you need to gauge how much the project will ultimately cost. The average cost of subfloor replacement comes out to about $4.25 per square foot.

Do not be surprised if you receive a higher rate from the contractor you’re speaking to. Some will present a rate closer to $7 per square foot.

Try to shop around if you don’t like the numbers you’re getting. They are rare, but some contractors will offer a rate of around $1.50. That will likely be the cheapest rate you’ll be able to find for subfloor replacement.

Replacing your entire subfloor is an option, but you don’t have to do that. You can focus on just some segments of your subfloor that are badly damaged.

Note that the numbers we’ve mentioned so far only account for the cost of materials. We’re not including the cost of labor and the impact of other important factors just yet. We will get to those a bit later in the article.

Cost to Replace Subfloor by Material

Material UsedCost Per Square Foot

The material you choose for your replacement subfloor makes a huge difference. Some materials are more durable than others so they will remain in good condition longer.

Certain materials also possess specific qualities that can help them work better in specific households. Examine them closely to see if they make sense as the material to use for your replacement subfloor. Learn more about the different materials that can be used as subflooring by checking out the information below.


First off, let’s discuss concrete as a potential material option for your subflooring. It’s one of the most expensive materials you can use for this particular application. You will have to pay around $6 per square foot if you want to use concrete.

The beauty of concrete, when used for subflooring, is its durability. Concrete is among the strongest materials you can use and you can expect it to last for a long time.

Using concrete is also a good idea because it’s a smooth material. It’s easier to keep your finished flooring even with concrete providing support underneath.


If you want to use something affordable for your subflooring, you should consider plywood. At around $2 per square foot, plywood is probably the cheapest material you will be able to use for subflooring.

Plywood won’t wow you with its durability, but it’s strong enough to last for a while. Just make sure that the plywood is installed properly so you can maximize its durability.

Ask the contractor how much they’ll charge if you want to use plywood. They may offer you a lower rate since plywood is easier to install compared to other subflooring materials.


OSB stands for oriented strand-board and it’s the next material option you can use as subflooring. OSB is another cheap subflooring material as it only costs about $3 per square foot.

For those who may be unaware, OSB is made by pressing and gluing pieces of wood together. That process produces a solid slate that can work well for subflooring purposes.

OSB functions similarly to plywood. If you used plywood as subflooring before and liked it, chances are you will be okay with OSB too.


Aside from common materials like concrete, plywood, and OSB, you can also choose high-performance panels to construct your subfloor. Advantech is one of those high-performance materials and it costs $4 per square foot.

Choose Advantech if you need your subfloor replaced as soon as possible. Workers can install Advantech panels quickly because they are very easy to work with.


Homeowners can also choose Amdry for subflooring. Amdry costs approximately $3.75 per square foot.

What sets Amdry apart from other subflooring materials is its insulating capabilities. Install Amdry if you’re trying to regulate the heat transfer among different parts of your home.

Amdry panels also promote good airflow. Any moisture that seeps into your subfloor will dry up quickly thanks to those panels.


Barricade is the next option you can use for subflooring. The average cost of Barricade subflooring is around $4.50 per square foot.

Similar to concrete, Barricade has gained popularity as a subflooring material because of how sturdy it is. No matter what finishing floor you pair Barricade with, you can expect it to retain its strength.


We’re going back to another budget-friendly option in Delta-FL. The aforementioned subflooring material is available for approximately $2.75 per square foot.

Delta-FL excels at protecting floors against moisture. It effectively stops moisture from reaching other parts of your flooring system. You also don’t have to worry about mold growth as long as you have Delta-FL installed.


Dricore subflooring is sold for about $3.75 per square foot. That’s a good price point for a fairly versatile subflooring material.

Dricore does a little bit of everything in terms of providing a sturdy foundation, insulation, and protection from moisture. It doesn’t excel in any one area, but it is a solid, all-around performer.


If you’re looking for an eco-friendly subflooring option, feel free to use Tyroc. Tyroc panels cost approximately $4.75 per square foot.

The material composition of Tyroc differentiates it from the other available options. It’s made from recycled tires and organic materials.

Beyond being eco-friendly, Tyroc also deserves some recognition because of how well it handles moisture. Tyroc can be both a responsible and practical addition to your home.


To round out our list of subflooring options, let’s take a closer look at Warmboard. Warmboard is also the most expensive option we’re highlighting in this article as it costs close to $7 per square foot.

Notably, Warmboard is pretty limited in terms of application. Optimizing Warmboard means it must be used with radiant heat hydronic systems. It may not be an option you can use in your household.

Still, there are real reasons to like Warmboard. The durability and radiant heating provided by Warmboard are highly coveted qualities that people want to see in their subflooring.

Labor Cost to Replace Subfloor

Estimate TypeCost Per Hour
Low-End Estimate$25
Mid-Range Estimate$35
High-End Estimate$45

Most contractors charge hourly subfloor installation projects. The average hourly rate for subfloor installations is right around $35.

Numerous factors will affect the hourly rate given to you by the contractor. Those factors have been detailed below.

Subfloor Removal

The workers may need to remove your existing subfloor completely before they can install the replacement. That means paying for the removal service as well. You can expect to pay around $28 per hour if you need your current subfloor removed.

That price is a bit steep, but remember that it also includes debris disposal. Paying for that service will save you a lot of trouble.

Size of Your Subfloor

Unsurprisingly, the size of your subfloor makes a huge difference when it comes to determining the cost of the project. Inquire about the contractor’s square footage rate then measure the size of the subfloor you want to replace. You can get a good grasp of how much that project will cost by making those calculations.

Desired Upgrades

Do you want to upgrade your home’s flooring system? Adding heating and some protective features can significantly improve your home. Your floors will also last longer with those features added.

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Related Questions

How Much Does It Cost to Repair a Subfloor?

Labor costs for subfloor repair often end up around $28 per hour. It’s common for homeowners to spend around $400 on subfloor repairs especially if the problem is related to water damage or pests.

Is Replacing the Subfloor in the Basement Expensive?

Yes, replacing the subfloor in your basement is very expensive. It’s the part of your home where subfloor replacement costs the most. Homeowners routinely spend around $4,000 to replace basement subfloors.

How Much Does Replacing the Subfloor of a Mobile Home Cost?

Replacing the subfloor for a mobile home costs approximately $2.50 per square foot. The cost of subfloor replacement for mobile homes is cheaper because less expensive materials are typically used for those projects.

Gary Evans
Gary Evans

Gary Evans is passionate about home improvement. He loves finding out how to make improvements in the easiest, most practical, and most affordable ways. Upgrading his home kitchen is one of his ongoing hobbies. Gary is also a long-time content creator and enjoys spending his free time tending to his hydroponic vegetable garden.

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