How Much Does Window Replacement Cost?

Highlights

• Window replacement has a typical cost range of $180 to $409 per window, with a national average cost of $280 per window.

• The exact cost to replace a home's windows will depend on the size and type of window, the window frame material, the type and number of glass panes, the installation location, the window brand, and the cost of labor.

• A homeowner may need to replace their windows if they notice visible damage, drafts, leaks, condensation, or decaying frames. Additionally, if a homeowner has trouble opening or closing their window, it might be time for replacement.

• Unless a homeowner has professional experience installing windows, it's best that they hire a professional for their window replacement project. Top window companies include Renewal by Andersen, The Home Depot, Marvin, Pella, and more.

When a home’s windows stop opening and closing properly or if they’re letting in cold air, it may be time for replacement windows. Knowing the overall cost of the best replacement windows can help keep homeowners within the project’s budget and avoid any surprise costs down the road.

So, how much does window replacement cost? According to Angi, the average window replacement cost is between $180 and $409 per window, and the national average cost of window replacement is around $280 per window, depending on window frame material and glass type, window size, and energy efficiency.

Factors in Calculating Window Replacement Cost

Those wondering “How much does it cost to replace a window?” might be surprised by how much the answer can vary. There are many factors that go into calculating window prices, including the frame material, type of glass, location of the window, the overall age of the house, and cost differences between full-frame replacement and retrofit replacement. Window replacement cost is also dependent on the geographic location of the home and a warm or cold climate.

Frame Material 

When replacing windows, homeowners will first need to choose a window frame material. The most common window frame materials are vinyl, wood, fiberglass, aluminum, and composite.

• Aluminum frames can cost anywhere from $75 to $400 per window, with most homeowners paying around $275. However, aluminum frames don’t insulate as well as other materials.

• Composite frames run between $300 and $1,200 per window, or an average of $900. They are the most durable and are constructed of a mix of PVC polymers and wood fiber for maintenance-free frames.

• Fiberglass frames run approximately 15 percent to 30 percent more than vinyl frames. Per window, the national average cost of window replacement with fiberglass windows is $1,250, or between $500 and $1,500. Fiberglass frames are more durable than vinyl and have similar insulation properties.

• Vinyl frames are the most popular and have an average price range from $100 to $900 per window and an average cost of $550. Vinyl is one of the most affordable, durable, and energy-efficient varieties.

• Wood frames run from $150 to $1,300, or $800 on average. Wood frames offer a classic architectural look, and some areas may require wood frames if the home is located in a historic district or is a historic landmark. “If it is a historic home, then you need to maintain the aesthetics of the home,” explains Wayne Owczarzac, owner of Mr. Handyman in Wheaton, Illinois. Wood frames are an easy option to maintain the historical look of a home.

Photo: bobvila.com

Window Size and Type

Different window types affect the overall cost of window replacement. Before installing replacement windows, homeowners will want to consider the window’s size, function, and look. Each window type serves a specific purpose. Generally, the larger the window, the more the replacement window cost will increase. Each window type and its average replacement cost is discussed in more detail in a section below.

Home Size

The cost of window replacement depends in part on the number of windows that will be replaced. The larger the home, the more windows it is likely to have. The average number of windows in a home is 10. Assuming that all of the windows are replaced at once, this would mean the average cost of replacing a home’s windows is around $2,000 to $11,500.

Window Location

Window locations can affect total window replacement cost, as replacement in some areas will result in additional costs per window.

• Basement window replacement costs depend on the window type. Small windows that are just large enough to let in natural light are relatively cheap to replace. However, egress windows, which provide additional escape routes out of a house in case of an emergency, can be pricier, as they often involve clearing the ground outside of the window.

• Bathroom windows tend to be relatively small and close to the ceiling for privacy reasons, which can make them less costly to replace.

• Bedroom windows may be required to be large enough for a person to escape through in case of an emergency. Master bedrooms commonly have large picture windows, and these tend to be the most costly to replace.

• Dining room windows often have large picture, bay, or bow windows, which can mean replacement will be double or triple the normal cost.

• Kitchen windows are most commonly placed above the sink, or there may be several accent windows throughout. Costs will depend on the size and location of these windows.

Replacing windows on an upper floor of a house increases the overall time of window installation and requires additional equipment and labor, therefore increasing the total cost of window replacement.

Glass Size and Type 

Window glass replacement cost will depend on what kind of glass is used. Some types of glass in replacement windows can help lower utility bills and boost energy efficiency. Paying for window tinting costs can help homeowners reduce harmful UV rays in their home, and impact-resistant glass may be recommended depending on the house’s geographic location. Depending on the location and age of the home, tempered or safety glass may be required by law.

Number of Glass Panes

Windows can have anywhere from one to three panes. Windows with multiple glass panes will generally cost more to replace, but they are also more energy efficient because they include extra layers of glass as well as a protective gas for insulation. A single pane costs between $100 and $350 to replace, but a double-pane window replacement costs $280 to $1,500.

Window Brand

As with many products, window prices vary greatly depending on the brand. For example, when customers are comparing Renewal by Andersen vs. Pella for replacement windows, these companies have similar prices to each other but may be pricey compared to other brands on the market. Andersen and Pella have wide ranges. Andersen windows cost between $215 to $3,000 and Pella windows cost $100 to $3,000 per window. Other popular brands include Jeld-Wen, Marvin, Window World, Feldco, Alside, and Simonton.

• RELATED: Read our Bob Vila review of Pella Windows and review of Renewal by Andersen.

Labor

On average, the labor cost for window replacement is between $55 and $65 per hour or $100 to $300 per window. Urban areas with a higher cost of living usually have higher labor costs. The more windows a homeowner replaces at once, the more they’ll likely save. Labor costs are also usually higher for a home that requires custom replacement windows to match historical architecture.

House Age

Homeowners with homes older than 70 years will usually have to double or triple projected pricing. Older homes come with unique challenges, such as unusual window sizes, which can necessitate choosing custom windows as well as repairing or replacing damaged or rotting trim, matching the historical architecture, removing counterweights, upgrading to current building codes, and filling in empty space with insulation.

Geographic Location 

The geographic location of the home can significantly impact the cost of window replacement. Local ordinances and codes could dictate the type of frame and glass that are required for window replacement in each area. If the home is located in a cold climate, budgeting for the cost of triple-pane windows may be the best option for optimal insulation and energy efficiency. If the home is located in a warmer climate, the homeowner may only need to budget for the cost of double-pane windows, as this type of window will usually provide adequate insulation and protection.

Additional Costs and Considerations

When homeowners are budgeting for window replacement cost, there are additional cost factors and considerations to keep in mind. Labor prices can vary due to window size, location, and the level of expertise required to correctly install custom windows. Structural repairs, insulation, waterproofing, job location, and disposal and cleanup costs can add to the total window replacement cost. A window replacement cost estimator can take these factors into account and give homeowners an idea of what they might pay.

Full-Frame vs. Retrofit

The difference between full-frame window replacement and retrofit replacement is a nail fin, which is a flange around the edge for attaching the frame directly to the studs and is found in new construction. In general, it’s recommended to use retrofit windows for existing homes.

Installation of retrofit or replacement windows costs between $100 and $300 each on average for labor, compared to $180 to $1,500 each for full-frame windows. The additional cost comes from the replacement of the entire window frame in addition to the window. Full-frame replacement is recommended for new construction projects, in existing buildings when stripping the walls to the studs, or for a remodel due to wall and window damage.

Structural Repairs

Removing and repairing damaged or rotted wood frames can also add to window replacement cost. This total can change after the initial estimate as a result of the contractor not knowing exactly what will need to be replaced or repaired until they get a good look at the structure when they start replacing the windows. Repairing trim, siding, or drywall can also drive up the cost of window replacement. Siding repair is likely to cost between $214 and $1,468, and drywall repair costs $250 to $765.

Energy-Efficient Upgrades

Including some energy-efficient upgrades as part of a window replacement can add to the up-front cost but may result in energy savings down the road. One common option is weatherstripping. This is the process of attaching foam, felt, or rubber tubes around the window to make it airtight.

Insulation and weatherproofing involve inserting insulation in the gaps surrounding a window. The cost of this work averages $3 to $20 per square foot. However, some of this cost may be recouped in energy savings.

Laminating glass has a similar effect as double glazing with the added benefit of protection from moisture. Low-e coating can result in a 50 percent reduction in heat loss. Tinting, which can also be installed for privacy, blocks sunlight coming in through the window and can help keep the home cool on sunny days.

Disposal and Cleanup

Disposal and cleanup costs are sometimes taken into account when a contractor estimates labor costs, and sometimes they are added as a separate charge of $55 to $65 per hour. Window replacement professionals can remove all job-related debris and clean all interior and exterior work areas.

Ongoing Maintenance

After replacement windows are installed, they may require some maintenance to keep them in good shape. The nature of the maintenance will depend on the window frame material.

Aluminum, wood, and sometimes vinyl may need to be repainted occasionally both inside and out. Regular window cleaning is also a good idea for all windows and can be done by a professional or by the homeowner. Exterior windows on the upper floors of the home may be best washed by a professional window cleaning company for safety. Lastly, any damage to the windowpane or frame could result in costly repairs. Steel, wood, and aluminum windows are some of the most durable, while vinyl has a more frequent need for repairs.

Customizations

It’s worth considering having any add-ons or customizations installed at the time of window replacement for convenience and reduced costs. Window treatments including blinds and shades are popular options and cost between $600 and $1,000. Screens can allow the windows to be left open without the risk of welcoming insects or wildlife into the home. Window screen replacement costs about $70 to $200 per window.

If the window trim is looking worse for wear, it may be worth having it replaced. The cost for window trimming materials is between $1 and $10 per linear foot. Lastly, for those who live in areas prone to hurricanes or other severe storms, shutters can provide protection and peace of mind. The cost per window for hurricane shutters is typically between $2,300 and $7,900.

Photo: depositphotos.com

Replacement Costs by Type of Window

There are many options to choose from when homeowners are deciding to replace windows. The two main factors that affect window replacement cost are window frame material and window design. When choosing a replacement window for a home, the homeowner will want to consider where the window will be located, how often the window will be opened, and what the function of the window will be.

Arched

Arched windows usually cost $350 to $1,000 on average. An arched window is a rounded-top window that is added to other window types for additional design aesthetics.

Awning

Awning windows can run from $400 to $950 per window. Awning windows work well in rainy climates because of the way the window creates a water-resistant awning when opened. These windows open via a crank that doubles as a lock and resists the wind blowing it open or closed.

Bay

Bay window replacement costs $900 to $7,100 on average. Bay windows protrude from the exterior wall and create a small shelf inside; they use flat windows set in an angled frame—a flat center window and two side windows set at a 30- to 40-degree angle. Bay windows usually add to the value of the home as a result of the increased square footage the design provides. These windows tend to cost more because of their large size and the needed expertise of a skilled window installer.

Bow

Bow window replacements cost $1,500 to $6,500. Bow windows rely on custom curved windows that create a circular area. They’re similar to bay windows but have a minimum of five panes of glass compared to three. The overall cost of bow window installation depends on the number of window panels used and the overall size of the window.

Casement

Casement windows can range anywhere from $150 to $1,000 depending on size and material type. Casement windows swing out to the side to open. Some models will open from the left or right side with a hand crank. These windows are made from solid glass and offer a less obstructed view. A casement window usually comes with one casement pane on the left and one on the right.

Circle

Circle windows can be full-round, half-round, elliptical, or oval. Circle windows can cost anywhere from $250 to $825. They usually do not open, but they can add visual interest to any home.

Custom

Due to the additional time and labor that go into creating one-of-a-kind windows, custom windows will often start at $1,000 apiece, but prices can be much higher for complex designs and features. This type of window is an option for homeowners with a unique vision or who have older homes with irregular window sizes.

Double Hung

A double-hung window typically runs anywhere from $150 to $650. Double-hung windows are similar to single-hung windows, but the big difference is that both the lower and the upper sashes move to open the window, which provides increased air flow and circulation. These types of windows have a low window cleaning cost since both sashes tilt inward for easy access, so homeowners may need to hire one of the best window cleaning services to help them keep their windows clean.

Egress

Egress windows cost between $100 and $700. For homes with finished basements, egress windows are often required by law as a safety precaution. While specific building codes vary regionally, egress windows must be large enough to accommodate a person in the event of an emergency.

Energy-Efficient

Installing energy-efficient windows that are ENERGY STAR certified costs between $120 and $1,500. Energy-efficient windows can be a significant investment up front but will typically save homeowners money in energy costs over time.

Fixed

Fixed windows generally cost anywhere from $400 to $950 apiece. These kinds of windows are simply windows that cannot be opened, and they typically have relatively large frames.

Floor-to-Ceiling

Because of their large size, replacing floor-to-ceiling windows has a relatively high price point of $700 to $5,000. For a window that makes a statement, floor-to-ceiling windows are a stunning way to add interest to a room.

Folding

Folding windows have a replacement cost of $500 to $900. This kind of window features multiple panels that allow it to fold in on itself for easy opening, and the complex design is reflected in the replacement cost.

Garden

Garden windows cost around $500 to $2,400. Garden windows are small bay windows that are intended to be used as little greenhouses that protrude from the side of the home. They provide extra square footage, additional shelf space, and natural light for houseplants, herbs, or flowers.

Glass Block

Having glass block windows installed will typically run between $60 and $840. Glass block windows are a popular choice for bathrooms, as they are often made of wavy glass that lets in natural light while maintaining plenty of privacy.

Hopper

A hopper window can cost anywhere from $150 to $650, not including installation. Hopper windows crank open slightly from the top or bottom to let in a light breeze. Since they don’t open fully, they are often utilized in tight spaces.

Jalousie

The cost to replace jalousie windows ranges from $170 to $380. Often seen in warm or tropical regions, jalousie windows function similarly to blinds. The slats of glass or metal can be opened using a lever to create a cross-breeze within the home.

Picture

The cost of a picture window varies based on size but typically ranges from $65 to $700. Most picture windows are made from one large rectangular pane and allow plenty of natural light into a space. Other custom shapes and sizes will bring up the cost.

Pocket

A pocket window replacement is entirely dependent on the size and condition of the existing window frame, but on average costs typically fall between $100 and $400. A pocket window is a catchall term for window replacements that do not require replacing the entire window frame. Instead, the new window is set inside the existing frame.

Single-Hung

Single-hung windows usually cost between $100 and $400. These classic vertically opening windows are very popular. With a single-hung window, only the bottom sash slides open and the upper sash remains stationary. These windows are typically installed on the first floor only because of the dangerous nature of leaning out the window to clean it.

Skylight

Skylight window installation costs can range from $900 to $2,500. Skylights add more natural light if the homeowner is limited on exterior wall options, but they are more complex to install, which leads to higher labor costs.

Sliding

Sliding windows can run from $150 to $800 depending on construction material. Sliding windows work like a single- or double-hung window, but they move horizontally instead of vertically. They are available in styles that allow one or both sides of the window to move.

Storm

Storm windows cost between $90 and $400 each. The benefits of storm windows are that they increase energy efficiency, help protect window trim, and increase the value of a home.

Transom

Transom windows can cost between $200 and $650. Transom windows are a decorative feature installed on or around a door frame. They allow additional light into the home, and some can even be opened for extra ventilation.

Photo: depositphotos.com

Do I need window replacement?

Some reasons for window replacement are obvious: There’s cold air leaking through the windows, visible damage or rot to the frame or glass, condensation forming on the inside of the glass or in between panes, or the windows no longer operate smoothly. All of these factors can increase a home's utility bill by causing the furnace to work overtime in the winter months. Investing in energy-efficient window replacement will help homeowners save money with heating and cooling costs. In turn, these savings will greatly mitigate the cost of replacement windows. There are several specific reasons for homeowners to install new windows.

Difficulty Opening and Closing

Windows become difficult to open and close for a few reasons: an old house that has settled around the frame, an incorrect installation that resulted in balance issues, or frames that have warped and rotted are just a few of them. Windows that don’t close properly may not lock, which also creates a safety issue. Windows need to open and close with ease and create a tight seal against leaks.

Visible Damage 

One of the clearest signs that a homeowner needs to replace their windows is visible damage. This includes cracked or broken glass panes and decay, damage, or mold on the window sill or frame. Broken and damaged windows are serious issues that need to be fixed before they get worse. Homeowners will want to take a close look at their windows; if they notice signs of decay, rot, mold, or other damage, it’s probably time for new windows.

Higher Energy Bills 

If a homeowner notices that the windowpane is cold to the touch in the colder months, that means their furnace is working overtime, driving up energy costs. Leaky and loose-fitting older windows are not energy efficient and lack the correct insulation and tight seal to keep a home warm. “If your windows have air leaks, they will allow cold air to enter your home, costing you more money to heat your home,” explains Owczarzac. “The bigger the leaks, the more [it] costs to heat.” Newer windows that keep the home comfortable when the temperature rises in the summer and drops in the winter can help significantly lower heating and cooling costs over the course of a year.

Drafts

Most homeowners are careful not to leave doors and windows open while the HVAC is running. But failing to replace old, drafty windows can similarly undermine their attempts to keep the home at a comfortable temperature. Installing windows that are properly sealed will eliminate chilly drafts in the winter and spare homeowners from excess heat and humidity in the summer.

External Noise Infiltration

Older windows don’t provide adequate sound insulation and absorption like newer windows. Older windows transfer sound vibrations from the outside to the inside of the home. Newer, energy-efficient double- or triple-pane windows absorb everyday outside sounds, which is beneficial if the home is located on a busy street or in a busy neighborhood.

Leaky Windows

Leaky windows can lead to mold growth. The longer homeowners wait to replace windows that leak and have water damage, the more serious the issue can become. Mold spore inhalation can cause serious respiratory illness, and the best way to avoid this is to replace the entire window.

Condensation Between Panes

Homeowners might notice water droplets accumulating on the surface or in between windowpanes. While it might not seem like a huge concern at first, a window with visible condensation has lost its seal. That means that in addition to moisture building up on the panes, air can also seep through those gaps.

No Double Glazing

Single-pane windows aren’t energy efficient, and they also don’t offer proper insulation or soundproofing. The biggest benefit of installing double-glazed, or double-pane, windows is the increase in energy efficiency. The internal temperature of the home will likely be easier to maintain, and the thermal efficiency can be improved by up to 80 percent. While the initial window replacement cost will be higher, the windows will pay for themselves with reduced energy costs. If the home has single-pane windows, homeowners can consider an upgrade to double- or triple-pane windows to make a difference in their energy bills and improve the curb appeal of their home.

Decaying Frames

As wooden window frames are exposed to moisture, serious safety issues can develop. Built-up moisture and water damage lead to decay, rot, and mold growth. “As soon as you notice any decay or wood rot, get it repaired,” advises Owczarzac. “The longer you wait, the higher the repair cost.” If homeowners notice that their windows are showing signs of decay, window replacement is in order.

Window Replacement: DIY vs. Hiring a Professional 

There are several advantages to hiring one of the best window replacement companies, such as Renewal by Andersen or even The Home Depot. A professional is more likely to know how to deal with several issues that may arise during the process of window replacement installation, such as:

• Mold. Mold growth is a serious issue and will likely need to be treated by professionals.

• Window damage and structural issues. Wood that is rotted or damaged can impact the structural integrity of the windows in load-bearing exterior walls.

• Measurements. If the measurements are not done correctly, the window will not fit and seal correctly, resulting in wasted money and time.

• Home age and code requirements. Homes that are in historic neighborhoods or those that qualify as historic landmarks may not have standard window sizes. Replacing them may require more than a simple retrofit. This can involve removing the frame and installing a new supporting structure that must meet modern code requirements.

• Location. Local ordinances and codes could dictate the placement of new windows. Local professionals are most likely to know what is required in their area.

After searching online for “How much does it cost to replace windows?” a homeowner might hope to save money by doing the job themselves. While it is possible to buy Home Depot windows or windows from another retailer and install them themselves, individuals may not have access to options for a variety of different window designs that are available to a professional window installation company. According to Owczarzac, “Most window replacement is not dangerous, but windows that are very large and on a second story could be dangerous and best left to a professional with the right equipment to get the job done.”

While a homeowner may save money on labor by installing their own windows and saving on window replacement cost, the additional costs incurred from purchasing the appropriate tools, renting a dumpster for cleanup and hauling away debris, and acquiring additional equipment such as ladders and scaffolding can quickly add up. It’s unlikely homeowners will save money by replacing windows on their own, unless they themselves are professional window installers.

How to Save Money on Window Replacement Cost

The cost to replace windows is by no means trivial, and window installation can strain a homeowner’s wallet. Buying cheaper windows is one way to lower window replacement cost, but there are a few other ways to save money without compromising on window quality.

Photo: depositphotos.com

• Use contractor- or builder-grade windows. Terminology matters when buying replacement windows. An architectural-grade window will likely be more expensive than a contractor-grade or builder-grade window. A builder-grade window from a major window company will be a good-quality window that can last for years to come.

• Install standard window styles. Common styles and shapes often make for more affordable windows, while interesting and unusual shapes tend to increase window replacement cost. The most affordable window styles are double-hung, single-hung, sliding, fixed, and casement windows.

• Stick to the basics. Window companies commonly offer additional features that drive up the price of window replacement. Integrated grills, between-glass shades, and trim and hardware supplied and installed by the company may not be important enough for homeowners to spend the extra money on them.

• Negotiate a lower price. Window companies compete for homeowners’ money by allowing room in their prices for negotiation. The replacement window industry expects price negotiation and will likely leave room for compromise.

• Replace more windows. Although it might sound counterintuitive, buying windows in bulk could help homeowners save big time. Many window companies will generally come down on the overall price the more windows the homeowner buys. Additionally, the fewer leaky windows left in the home, the more homeowners will save in the long term on energy bills.

• Get multiple quotes. Getting at least three to eight quotes can yield the best price options. Homeowners may want to let a window company know that they are getting multiple price quotes—the company may be willing to match a lower price offer from a competitor.

• Stick to the off-season. Most window companies are busiest in the spring and fall, so prices are highest during these times due to demand. Keep an eye out for deals and special promotions during summer and winter when companies need to offer incentives to keep business flowing.

Questions to Ask About Window Replacement 

Asking a professional window installation company the right questions can minimize miscommunication and help homeowners get the price range and quality of work they want. There are several questions homeowners may want to ask about window replacement cost before beginning a project.

Before the project:

• Will you give me a free estimate?

• Can you provide a breakdown of the costs?

• What are your certifications?

• Are you insured?

• Can I see some examples of your work?

• Who can I expect to perform the installation?

• Can I expect energy cost savings with my new windows?

• Can I match the design of the replacement windows with the overall home design?

• What are other color options?

• What installation method do you use?

• What type of warranty do you offer?

• How long will the project take?

• Will weather impact the project timeline?

• Is cleanup included in the service?

• Are there hidden fees?

During the project, if there is a problem:

• How can this be fixed?

• What are the next steps?

• What additional costs will be added?

After the project:

• Can you explain the operation of specific windows?

• Where can I leave a review?

FAQs

Choosing the best replacement windows and keeping overall home window replacement costs down can be a daunting process. Knowing the answers to some frequently asked questions about window replacement can help guide homeowners in their decision.

Q. How much does it cost to replace all windows in a house?

The average cost for window replacement is $180 to $409 per window. For a home with 10 windows, a full window replacement will cost $2,000 to $11,500 depending on the type of windows and other factors. The cost will be higher for larger homes with more than 10 windows and lower for smaller homes with fewer windows to replace.

Q. Should I replace all windows at once?

Ultimately, this decision depends on the homeowner’s budget. Window size, style, and material can affect overall window replacement cost. If a homeowner is interested in replacing a window with a bay, bow, or other specially shaped window, it could be a successful onetime project. If there is widespread damage to every window or if the windows are over 20 years old, a full replacement would be in order. In most situations, the homeowner may qualify for volume discounts or promotions if they decide to replace all their windows at once.

Q. What is the best material for windows?

Deciding on window frame material is a personal decision. It’s important to consider what each window offers in terms of function, style, and overall cost.

• Wood replacement windows are more expensive, offer a natural look, and can be painted or stained. They can provide more style options and add to the overall curb appeal of the home.

• Fiberglass windows require less maintenance than wood windows and are less expensive. They’re strong, sturdy, and offer energy efficiency.

• Vinyl windows are affordable, functional, and don’t require painting, staining, or refinishing. Vinyl windows are among the most energy efficient of all window types. They are a great choice for louder environments and have the insulating quality of wood with the added option of foam installation.

Key factors to consider when choosing the best window material are appearance, maintenance, price, durability, and energy efficiency.

Q. What are the most expensive types of windows?

The most expensive types of windows are bay, egress, bow, skylight, casement, garden or box windows, sliding, awning, and glass block windows. Bay windows are the most expensive because they project outward to create additional seating or storage. These are large windows that can only be installed by an expert installer using quality tools and equipment; that’s why homeowners will part with an average of $900 to $7,100 for a bay window. Egress window costs can be on the high end because they have certain size and installation requirements by law.

Sources: Angi, Fixr, LawnStarter