What Is the Cost to Finish a Basement in 2025?

The average cost to finish a basement is about $32,000, but the price can range from $2,800 to $100,000 or more, depending on a number of factors. Costs per square foot typically fall between $7 and $23. The materials, permits, appliances and labor required for your specific project will determine your final cost.

What is the most expensive part of finishing a basement?

The most expensive aspect of finishing a basement is generally the required materials themselves, which can constitute about 70% or more of your total cost. Labor is a significant expense as well, and may account for as much as 20% (or more) of project costs. Permits to meet local building codes typically range from 1% to 2% to as much as 10% of your total project expense.

Here’s a rough idea of what you can expect to pay for major components of the work:

Is finishing a basement worth the money?

Finishing a basement may increase your home’s value, and you can expect to recoup about 70% of what you spent on it if you sell your home^[0]

Advantages of finishing a basement

• Increased home value. Depending on where you live, the features of your basement and your home’s condition, finishing a basement may add as much as 10% to your home’s value. This can equate to a return on investment of about 70%, meaning your home’s value may increase by about 70% of the cost of finishing the basement.

• Lower energy bills. When your basement is unfinished, your home’s HVAC system needs to work harder to control the temperature in your entire home. Finishing the basement removes a source of cold in the winter as well as a source of extra heat in the summer, creating a more energy-efficient home^[0]

• May attract buyers. Homebuyers may consider a finished basement a desirable feature.

• Possible rental income. If you plan to rent out your finished basement and your basement space meets local building codes for safety and egress, the rental income might offset your costs, bringing you a larger return on your investment.

• Versatile way to increase usable home square footage. Finishing your basement can increase your personal enjoyment of your home. You’d have more usable living space, allowing you to enjoy an additional bedroom, den, playroom, home theater, kitchen, bathroom, music studio, gym or other type of room that suits your lifestyle.

• Can take noisy activities away from the home’s main living space. A finished basement is an excellent space for loud music practice, parties or play areas that won’t disturb the rest of the household or the neighborhood.

• May create a safe space during severe weather. During severe weather or natural disasters, the basement may be the safest area of the house. A finished basement allows you to enjoy that shelter in a comfortable living space.

Disadvantages of finishing a basement

• This project can be costly. Finishing a basement is a sizable expense that may require financing to complete.

• You probably won’t recoup 100% of your expenses. Unless you plan to rent out the space for many years, your return on investment will likely come in at around 70%.

• May raise your property taxes. Finishing your basement may increase your property’s taxable value. To find out whether and how much your property taxes will increase if you finish your basement, contact your town or city’s municipal office for a rough estimate of how your property tax bill will change^[0]

• You’ll need to meet building codes. Permit(s) and municipal inspections are likely part of this project.

• Moisture may be an issue. Because basements tend to be moist spaces that are vulnerable to flooding, you may need to invest in dehumidifiers, a sump pump and additional flood insurance.

• Lighting may not be optimal. Basements are often naturally dark spaces, which may make it necessary to buy and install extra windows and/or lighting fixtures.

• Access to plumbing and electrical lines may become more difficult. Adding walls and a ceiling to your basement may make electrical and plumbing lines invisible or hard to reach. If you don’t install removable access panels when you finish your basement, you may need to cut walls open if you need repair work done.