How Much Does it Cost to Install or Replace a Basement Window in 2024?

On average, it costs around $800 to install a basement window.

The cost to install a basement window is anywhere from $600 to $1,100, with the national average being around $800, including materials and labor. Typically, your final cost will depend on the size and type of window you select, as well as the complexity of installation.

For instance, if you opt for a pre-made window, it will likely be more affordable than custom-made windows. Smaller hopper windows might cost only around $280, while an egress window could actually end up costing you over $5,500 in total.

When selecting the right window for your basement, it’s essential to consider various aspects. Choosing an egress window is necessary for safety reasons if you plan to use your basement as a living area. Make sure it’s large enough for an adult to escape through quickly in case of an emergency.

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Average Basement Window Costs

National Average Cost$800
Typical Price Range$600 – $1,100
Extreme Low-End Cost$280
Extreme High-End Cost$5,500

Basement windows come in various sizes and styles, and the installation cost can range from $600 to $1,100 in total. Whether you’re looking for larger windows that bring in more natural light or smaller, energy-efficient alternatives, there are several factors that can affect the ultimate price, including:

  • Window Size and Type; 
  • Frame Material
  • Manufacturer;
  • Labor Cost.

The national average for installing a basement window is around $800 in total, but this can go up or down based on the project’s specifics. If you just need a small window to improve the ventilation system, a basic hopper window could cost around $280, while a custom-made egress window could be between $5,500 and higher.

It’s important to remember that if the installation requires extra work, such as framing and concrete cutting, then the final sum may be significantly higher. Generally, an installer will charge between $45 and $80 an hour for labor.

Basement window on a table
Photo Credit: Tim Ide / Flickr / CC BY 2.0 DEED

Basement Window Cost Estimator by Size

Window size is a key factor in determining the total cost of your basement window installation. When deciding on a window size for your basement, it’s important to consider local building codes and regulations. Depending on what you plan to use the space for, you might require a larger window.

If your basement is unfinished and used just for storage, a small window should do the trick for ventilation and light. These usually range from $80 to $450 without installation. 

For finished basements with living spaces, you’ll likely need egress windows that must be large enough for an adult to pass through easily (width over 20” and height over 24”). On average, a large window can cost anywhere from $550 to $1,000 for the window itself.

Here is an overview of cost estimates based on window sizes:

SizeAverage Cost (Window Only)
Small $80 – $450
Medium $350 – $550
Large$550 – $1,000


Typically, codes also require the installation of a window well and ladder with the egress window, which will add to your cost. 

Other Factors That Affect Basement Window Cost

Installing basement windows comes with several other factors that can affect the total price. Whether you’re looking for a cost-effective way to let in more natural light or want bigger windows to turn your basement into an extra bedroom, you need to take various elements into account, including:

  • Basement Window Type
  • Frame Material
  • ​​Type of Order
  • Labor Costs
  • ​​Energy-Star Basement Window

Basement Window Type

Basement windows come in a variety of types to fit different needs. The most common is an egress window, which provides a safe exit in an emergency. Hopper windows are another popular choice, offering ventilation and the ability to open them from the inside. Glass block windows let light in without compromising safety. 

Bear in mind if you’re setting up a living area down below, it must have an egress window. Sliding or casement windows are great options to provide egress. 

The following table shows the average cost of basement window installation depending on the type:

Window TypeAverage Cost (Window Only)
Hopper$100 – $350
Awning $505 – $1,650
Glass Block$85 – $475
Single-Hung$245 – $635
Double-Hung$250 – $975
Sliding$280 – $695
Casement$360 – $540
Egress$100 – $700

Hopper Window

Installing a hopper window in your basement is a stylish, secure choice for providing light and airflow. With sizes ranging from 12″ to 24″ wide and 30″ to 36″ high, they offer the perfect solution when you have limited space. 

Prices usually range from $100 to $350 without installation. Additionally, they provide an extra safety measure and are more energy efficient due to the downward opening style.

Awning Window

An awning window is a perfect addition to a basement room or storage space to provide ventilation and keep drafts at bay. It opens from the bottom and swings out, allowing you to cool the area.

Prices vary based on size and materials but typically range from $100 to $600, with installation adding a few hundred more. 

Glass Block Window

Glass blocks are an attractive and secure way to bring light into basements. They do not open, but some models come with vents. Available in various sizes, they can be combined with other basement window-type options for ventilation and lighting. Prices range from around $85 to over $475, depending on the size and design.

Because of their heaviness and unbreakable nature, glass block windows provide a secure alternative to conventional windows. However, installing them may require the help of a professional contractor due to the necessary specialized equipment for proper installation.

Single-Hung Window

Single-hung windows feature two sashes, with one being stationary and the other operable. It works by sliding the movable sash (the bottom portion) up and down to open and close. They’re straightforward to install and cost around $245 to $635 per window. Remember, if you’re using them for egress, you’ll need a well too.

Double-Hung Window

Double-hung windows are similar to single-hung windows but with two operable sashes, allowing you to open the bottom or top depending on your needs. This window type is a good choice for smaller spaces due to its versatility and flexibility.

On average, the cost of double-hung windows ranges from $250 to $975 depending on the size, materials, and other factors. Unlike other windows, these have a reasonably low air leakage rate and provide optimal ventilation.

Sliding Window

For basements, sliding windows offer many advantages. They are easy to operate, require minimal maintenance, and are energy-efficient. Sliding windows open by simply sliding one sash over the other. This makes them especially useful when the basement walls are narrow or short.

Moreover, they are multi-functional and can be used for ventilation and illumination. On average, these windows cost more than other types, ranging from $280 to $695 for the unit itself.

Casement Window

Casement windows are a great choice for an above-ground basement space. They’re easy to open and close thanks to the hand crank-open feature and locking mechanism, and they provide lots of light and ventilation. 

Plus, they’re secure, energy-efficient, and meet higher egress requirements in small areas. On average, these windows cost around $360 to $540 per unit, depending on their size and design.

Egress Window

A basement egress window is essential for ensuring your home meets the building code requirements if the basement is used as a living space. It is a specially designed window, larger than a standard window, that provides a means of escape in an emergency. According to the code, egress windows must meet the following standards:

  • Minimum width of the opening of 20” 
  • Minimum height of the opening of 24”
  • Minimum net clear opening of 5 square feet.

*Note: Note that the minimum opening size for an egress window is 5.7 sq. ft. above ground and 5 sq.ft.below ground.

Installation of an egress window can increase natural light in a basement and help cool the space. There are several popular types of egress windows available:

  • Casement and sliding styles are the most common.
  • Awnings that allow full opening are another good option.
  • Single-hung and double-hung are also used. Since their opening is about half the frame size, you’ll need a window that is double the size required by the building code to fit the basic standards for egress.

Basement egress windows also require a window well of at least 9 sq. ft. that allows the window to open fully. A ladder or steps is required if the well is deeper than 44”.   

Egress windows can be installed during new construction or added to an existing basement. It’s best to have a professional install it since they have the specialized knowledge and skills required.

Generally, the price for an egress window ranges from $100 to $700 per unit. The overall egress window installation cost, including labor, is typically between $2,445 and $5,265.

Frame Material

The frame of your windows in the basement is an important consideration. Depending on your budget and the look you desire, each type of frame has its own unique benefits and drawbacks. Vinyl, wood, fiberglass, and aluminum frames come in various price points but have different looks and characteristics.

Vinyl, for example, is a budget-friendly option, costing between $100 and $800 per window. They are moisture-resistant, require low maintenance, and offer excellent energy efficiency. Additionally, double-pane windows can add more insulation than a single-pane one. Meanwhile, aluminum and steel frames are durable. However, they don’t provide the same level of insulation as the other materials.

For a more classic and timeless look, there’s no substitute for wood frames, which add a cozy and organic feel to your home. However, wooden frames require more maintenance than other materials. Lastly, fiberglass frames provide superior insulation and don’t require much upkeep but come with a higher price tag.

Frame Average Cost Range
Vinyl$100 – $800
Aluminum$100 – $450
Fiberglass$300 – $1,300
Wood$170 – $1,300
Steel$300 – $1,400

Type of Order

Homeowners often have two alternatives when it comes to window projects: prefabricated or custom. Prefab windows are much more affordable, available in standard shapes and sizes, and typically faster to deliver, while custom solutions provide more options to suit any size or shape requirement.

Usually, prefabricated basement windows cost around $120 to $300 per unit. But if you’re looking for something more bespoke, custom windows may set you back anywhere between $600 and $850 without installation.

Labor Cost 

Installing fees for basement windows can vary greatly, depending on several factors, such as:

  • Window type and size
  • Project complexity
  • The contractor you choose. 

On average, a window installer will charge around $45 to $80 per hour. Typically, a new window installation cost can fall between $250 to $750 on labor costs, while a window replacement costs about $110 to $290 per unit (labor only).

If you opt for an egress window, installation costs can be on the pricier side at an average of $3,705, including materials and labor. On the other hand, a small hopper window project will cost less, hovering around $350 in total. 

Type of Basement WindowAverage Installation Costs (Window and Labor)
Egress Window$3,705
Hopper Window$350

Remember that by replacing an old window with a larger window, other cost factors might come into play. The window replacement cost may go up if the window opening needs to be enlarged or you need to add extra support for the new window. 

On average, enlarging the opening and making related modifications will set you back between $450 to $1,300. So, make sure to factor this into your budget when starting the installation process.

​​Energy-Star Basement Window 

Installing Energy-Star windows in your basement reduces energy costs and makes your home more energy-efficient. Compared to standard basement windows, Energy-Star windows are more airtight, keeping cold air out during winter and preventing heat from escaping.

According to their required standards, Energy-Star windows come with additional features such as:

  • Insulated frames
  • Double or triple-pane glazing with inert gases
  • Special coatings that prevent unwanted heat flow into and out of your house. 

The cost of installing Energy-Star windows in your basement will depend on the size and type of the unit and any extra features you may desire. Generally, an Energy-Star window with standard features can range from $300 to $500 per window. While the cost may be higher than standard windows, the energy savings you gain can make it worth the investment.

Installing basement windows involves more than just the cost of the window itself. For instance, you may want to consider additional services to help improve your home’s energy efficiency, such as caulking and weatherstripping the windows. Plus, if you’re installing an egress window, you’ll likely need a staircase or a window well cover.

All these home improvements can add up and make installation costs for the basement windows a bit higher than expected.

Basement Window Well Installation

If you’re installing a basement egress window, you’ll have to consider the cost of a window well. Prices can run from $405 to $1,490, depending on the material and the complexity of the setup. A window well cover can add an extra $270 to $1,105 to the total.

A window well is an excavated space that you dig out around a basement window essential for a below-ground basement window installation. It offers the extra space for a window to open fully and also prevents water from entering your home’s interior.

It is recommended to hire a professional contractor to ensure the job is done properly. An experienced professional will be able to explain the installation costs and recommend the best option for you.

Weather Stripping

Installing weather stripping is an essential part of window installation. It can help reduce heat leakage and energy costs, so it’s well worth it. The cost of materials and installation can range from $150 to $500 for a single window. 

You can install weather stripping as a DIY project, but it’s generally best to call a professional to ensure it’s done correctly. That way, you can be confident you’re getting the most out of your money and maximizing energy savings.

Caulking Cost 

Caulking is a must-have for any house, ensuring the window sill and frame are sealed properly. The cost to caulk a single window typically ranges from $55 to $90, including materials and installation. If you need to caulk multiple windows, consider getting free quotes from contractors to negotiate a better deal.

Remember that caulking can save you money in the long run as it prevents costly repairs down the line from the damage caused by moisture.

Basement Insulation Cost 

Insulating your basement is a great way to boost your home’s energy efficiency and reduce noise levels. The cost of insulating your basement varies depending on the size and type of insulation you choose. 

On average, you can expect to pay between $1.60 and $2.80 per square foot to have your basement insulated, which takes into account the cost of both materials and installation.

Investing in basement insulation is an important and worthwhile home upgrade that can pay off in the long run, especially if you plan to make your basement a part of the living space.

Window Repairs and Replacement

Windows need occasional repair or replacement due to wear and tear or improper installation. Whether it’s your basement window or the one in your living room, maybe it’s time to take action if you notice any damage. Any signs of a broken seal, scratches, or cracks can detrimentally impact the energy performance levels in your home.

The cost of repairing a standard-size window can range anywhere from $170 to $565, depending on the type of repair. If a window needs replacing, the cost can be much higher. Replacement window prices run from as low as $310 to as high as $1,330 in total. 

Overall, it’s best to act quickly and repair or replace any compromised window in your home. Delaying or ignoring any damage can only mean higher HVAC costs.

Pro Cost vs. DIY Cost

If you want to save money on your window installation, it may be tempting to take the do-it-yourself route. But it’s important to be aware that professional window installation is the safest and most reliable way to go. While it may cost more, it comes with the assurance that it’s done properly and safely.

On the other hand, if you’re only dealing with a minor project, such as a small awning window replacement, DIY could be an option that saves you some money.

Note that for egress window installation, professional help is highly recommended.

If you do decide to take on the project yourself, materials and tools can cost between $350 and $500. The overall cost can range from $450 to $1,100 for a small awning window. The following table gives a breakdown of the DIY window installation costs:

ItemAverage Cost
Replacement Awning Window$100 – $600/ window
Safety Glass$14
Tape Measure$18
Framer’s Square$13
Putty Knife$10
Expanding Foam Sealant$10
Interior and Exterior Window Grade Sealant$25 – $80
Caulk Gun$6
Power Driver and Bits$120 – $240
Utility Knife$12
Finish Nails$6
Fasteners$15 – $45
Total Cost of DIY Basement Window Installation$450 to $1,100

While professional installation of an awning window replacement can cost anywhere from $350 to $1,350 in total, the DIY cost of this installation would range from $450 to $1,100. So, if you’re up for the challenge, DIY could save you some money.

Pro Cost$350 – $1,350
DIY Cost$450 – $1,100 

However, remember that the peace of mind you get when you go with a professional installer is worth its weight in gold. Professional installation ensures that the job is done correctly and efficiently. They know what materials to use, how to measure accurately, and apply the correct expertise to the job.

Basement Window Cost by Location

The national average cost for basement window installation is between $600 and $1,100 in total. However, the price can vary depending on the location.

For instance, if you live in a big city where labor or building materials are more expensive, your total window installation cost will likely be higher. On the other hand, if you live in a small town with more favorable labor rates, you may be able to get away with spending less.

In addition, if you live in a colder climate, your cost to install the windows may be higher than in a warmer location due to the additional materials needed to insulate against cold weather.

FAQ About Basement Windows

How much does it cost to put a window in a basement? 

Putting a window in your basement can cost anywhere from $600 to $1,100 on average, depending on the window size and type. This price tag covers the materials and professional installation. 

How hard is it to install a window in your basement?

Adding a window to a basement can be tricky. If you don’t have the know-how, it’s best to leave it to the professionals. You’ll need to make sure it’s adequately insulated and meets local building code regulations.

Do I need a permit to install a window in my basement?

In most cases, yes, you’ll need to get a permit from your local building department if you want to install a window in your basement. Before starting the project, ensure you have all the necessary paperwork in order. That way, you’ll avoid any headaches down the line.

Can you add a window to an existing basement?

It’s definitely possible to add a window to your basement, but it’s not something you should do on your own. Changes to the foundation walls and drainage are required in order to accommodate the window, so it’s best to get in touch with an expert to make sure everything’s done right.

How much does it cost to install a window in an existing wall? 

Installing a window in an existing wall can set you back anywhere from $1,200 to $4,000 in total, depending on the job’s complexity. The size and type of window, as well as any modifications, will all play a role in the final cost.

If you’re thinking of tackling this project alone, you may end up spending less, but it’s always a good idea to consult a professional first.

Do basement windows add value?

Basement windows certainly can add value to your home. They can bring in natural light and ventilation, making the space brighter and more comfortable. More light and airflow can make a basement feel less oppressive and give the home an overall cozier, inviting feel. Plus, they can provide an extra point of access to your outdoor space.

Find a Window Installation Pro Near You

A basement window is an important upgrade for any home. Not only does it add natural light and ventilation, but it also increases security by providing another way out. 

Regarding installation or replacement, you can expect to pay anywhere from $600 to over $1,100 if you hire a window professional, depending on the size and window type. Investing in a basement window is well worth it to ensure your home is safe and bright.

Note: Window Gnome may get a referral fee for matching you with contractors in your area.

Main Photo Credit: Sery Content Development MT / Flickr / CC BY 2.0 DEED

Luminita Toma

Luminita Toma is a nature-loving writer who simply adores pretty flowers and lawns. After plenty of research and writing on lawn care and gardening, she's got a keen eye for plants and their maintenance. When she's got some spare time, there's nothing she enjoys more than chilling with her friends, hitting the theatre, or traveling.