Bay windows add style, natural light, and extra space to a home, but they aren’t cheap. Unlike standard windows, a bay window is made up of at least three individual windows set in a structure that extends outward from your home. This adds curb appeal, but the extra materials and construction drive up the price.
Expect to pay between $1,800 and $2,000 for a standard bay window installation. Smaller fiberglass models start around $1,000, while high-end, energy-efficient versions with premium materials can exceed $7,000. Prices vary based on window size, frame material, and installation complexity — and if additional framing or construction is required, costs can climb even higher.
Our team spoke with industry professionals, surveyed homeowners, reviewed the best window brands, and gathered data from retail sites to uncover the main cost factors affecting bay window installation. This guide breaks down what impacts bay window pricing, how different materials compare, and what to expect when budgeting for installation.
- Price Range: $1,200+
- Glass and Hardware Warranty: 10–20 years
- Labor Warranty: 2 years
- BBB Rating: A+
- State Availability: 47 states
- Installs its own patented Fibrex framing
- Includes a transferable 20-year warranty on glass and a 10-year warranty on nonglass materials
- Holds an A+ rating with the Better Business Bureau
- Doesn’t carry aluminum, fiberglass, or wood frames
- Can have long wait times between consultation and installation, according to customer reviews
You can purchase the following window styles from Renewal by Andersen:
- Awning
- Bay/bow
- Casement
- Double-hung
- Picture
- Sliding/gliding
- Specialty windows with geometric shapes
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How Much Do Bay Windows Cost by Material?
There are four main types of materials for bay windows, and the cost varies significantly depending on which one you choose. Aluminum and vinyl bay windows are usually the most affordable, but wood and fiberglass hold up for much longer.
The window glass material also plays a role. “Energy-efficient glass options can also add to the price,” said Roy Neely, a handyperson expert at Memphis, Tennessee-based Frontdoor.
We interviewed additional experts to understand the price variance of bay windows by frame material. Andrew Prchal, the president and co-founder of Gunner Roofing in Stamford, Connecticut, stated that he charges up to $2,500 for a wood bay window, excluding installation.
You may also end up choosing the bay window type based on the other windows used in your home’s exterior.
| Type | Low-End Cost | High-End Cost |
| Aluminum | $500 | $2,000+ |
| Vinyl | $700 | $1,800+ |
| Fiberglass | $800 | $3,500+ |
| Wood | $900 | $2,500+ |
Pros and Cons of Window Materials
Each window frame material comes with benefits and drawbacks:
- Aluminum: These windows are lightweight and hold up well, but the insulation isn’t nearly as good as other types.
- Fiberglass: These windows aren’t cheap, but they’re the strongest, especially when load-bearing qualities are essential. Depending on the construction of your home, this may be the best bet for strength, support, and longevity.
- Wood: Although these windows require more maintenance, they offer many options for custom solutions. Be prepared to invest more time in maintaining wood bay windows.
- Vinyl: Weather resistance makes these windows the most popular choice for bay window replacement. You won’t have much to do to take care of a vinyl window, but in very warm climates, they may deteriorate faster.
How Much Do Bay Windows Cost by Brand?
Some brands are more expensive than others. Where window installation companies like Andersen set the national average for windows, Pella and Jeld Wen are often at the top end of the list. It’s important to get more than one quote on a bay window cost so that you can make the best decision and get the best on your window.
When comparing one window brand to another, it’s important to remember that each brand has different window series. Some of the high-end series of windows from Anderson may be more expensive than Pella’s, and vice versa.
| Brand | Bay Window Cost |
| Anderson 400 Bay Window | $2,000 |
| Harvey Bay Window | $1,050 |
| Jeld Wed Bay Window | $1,700 |
| Simonton Bay Window | $1,000 |
| Pella Bay Window | $1,900 |
| Alside Bay Window | $1,600 |
How Much Do Bay Windows Cost by Size?
The main factor affecting bay window project costs is window size. Unlike most window styles that use standard sizing, bay windows typically have larger center and side windows that serve aesthetic—and occasionally functional—purposes. Due to their larger size, you likely need to consider customization options and structural modifications to your home if you don’t have the proper opening.
Bay window cost by size is a simple math equation. The larger the window, the more it costs. This applies to both material and labor costs. In addition, standard bay window sizes are more affordable than custom bay windows, so keep that in mind as you design your space.
You can choose a window from 3 to 10 feet wide and 3 to 6 feet high, but the additional cost of a 10′ x 6′ window may exceed your budget. Large bay windows can increase your home’s value, which is a consideration for those trying to sell the home in the near future. Standard bay window sizes and costs are as follows (excluding labor):
| Window Dimensions | Bay Window Cost |
| 4′ x 3′ | $750 – $1,850 |
| 6′ x 3′ | $850 – $2,900 |
| 8′ x 3′ | $900 – $3,250 |
| 10′ x 3′ | $850 – $4,000 |
How Much Do Bay Windows Cost by Type?
Another factor that influences the total price is the type of bay window you choose. Expect the standard bay windows to be the most affordable, and as you get more involved in the style and design of the window, the project cost goes up.
For starters, it’s important to know that bay windows come in multiple types that fall under two categories: fixed and operating. As the name suggests, fixed bay windows contain window panels that won’t open. An example of a fixed bay window is a picture window. Operating bay windows, which include casement windows, open and close.
Full Bay Windows
A full bay window is large and tall and has 30-degree or 45-degree side windows installed. A full bay window is the standard type of bay window and provides significant natural light. Full bay windows cost in the $1,800–$2,000 range for an average size with reasonable installation fees.
Energy-Efficient Bay Windows
As soon as energy efficiency is included in a window project, expect the window materials to go up by about 25% or more. Window treatments are difficult to install on bay windows, so if you’re concerned about energy costs, it’s worth looking into this at the start of the project.
Angled/Circle Bay Windows
Angled or circled bay windows are around the same price as full bay windows, or slightly more. If you get to the point of a bow window, expect pricing to be closer to $2,000–$3,000 for a standard bow.
Sometimes, the panes of glass have to be custom manufactured for a circular bay window, and therefore, prices can rise considerably higher.
Oriel Bay Windows
If you have a historic home, Victorian or Oriel bay windows are probably part of your design.
The best thing about Oriel bay windows is that you can put them on any level of the home. Usually, the exterior walls of most homes don’t have bay windows on the second floor for construction reasons, but oriel windows work through the home.
The most significant difference between Oriel bay windows and full bay windows is the woodwork done under them. They cost around the same as full bay windows.
Boxed Bay Windows
Boxed bay windows don’t have the traditional 30-degree or 45-degree angles you see from other bay windows. With the box window, there are two side windows installed at 90-degree angles with the large picture window in the front. The best thing about boxed bay windows is that they’re typically easier to install and require less work from a design or construction standpoint, so pricing is usually in the $800–$1,200 range.
What’s The Difference Between Bay Windows and Bow Windows?
A bay window is typically made up of a large picture window with two side windows that come out at a 45-degree angle. The angle of the smaller windows must be the same on both sides. The inside of the bay window creates a unique space that can be used as a window seat or reading corner.
On the other hand, bow windows consist of five or six windows put together to create a semicircle shape protruding from the home. With these styles, you have to install more windows, which increases the cost.
Bay Vs. Bow Windows: Which Are Cheaper?
Bay windows are often cheaper than bow windows because of the amount of glass and the ease of installation. However, if you choose a Low-E, energy-efficient window for the bow and a cheap vinyl by-window, you may see prices come closer together.
Although it’s hard to compare exactly, bow windows usually cost about $1,000 more than bay windows.
Bay Window Replacement Vs. Repair Cost
The cost of bay window replacement is higher than that of a bay window repair. Sometimes, a repair can mean just replacing a piece of glass, which could cost just a few hundred dollars compared to thousands of dollars for the entire window replacement.
When deciding about replacement vs. repair, get quotes for both. If your bay window isn’t that old, then the repair may make more sense. However, repairing an old window, knowing that it’ll soon need replacement, may not make much sense.
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Expert Tip: If you think the glass in the window is all that needs to be replaced, consider talking to a glass repair company as opposed to a window manufacturer. The competing quotes can help you save some money.
Bay Window Replacement Costs
The replacement costs of a bay window are typically a bit less than a new bay window, but the savings will likely only be a few hundred dollars. The difference in price for these standard windows is usually seen in labor costs. If your bay window can be replaced without doing any work to the center window frame, expect costs to be slightly lower.
In addition, if you had to undergo quite a bit of construction initially to install a bay window, the replacement is a much smaller home improvement project. Expect these costs for a bay window replacement to range from $900 to $2,500, with a few hundred dollars extra in labor.
Total labor costs for bay window installation typically start around $300. However, this can increase significantly depending on where you live and any additional work the professional encounters during the installation process. Some bay windows have a small roof that protrudes over the bay window itself. If you are installing a new bay window or replacing one, expect that the bay roof will add anywhere from $500 to $1,500 to the total cost of the project.
Structural Work
Bay windows don’t just replace an existing window — they reshape part of your home’s exterior, which is why labor costs tend to be higher than a standard window install. It’s easy to install bay windows in certain areas of the home, but other areas have load-bearing walls that need more to maintain their structural integrity. If your home needs structural work done during the bay window installation process, expect costs to be $500 to $1,000 or more.
“Installing a bay or bow window is significantly more complex than installing a standard single-hung window,” Neely said. “A bay or bow window requires structural modifications, as it projects outward from the house, unlike a flat single-hung window. In contrast, a single-hung window typically fits within an existing window opening and doesn’t require structural changes.”
Expert Tip: If you have a reliable handyman, ask them what the structural costs will be and if they can set the home up for an easy install of the bay window; then do the installation yourself. This takes a bit of construction knowledge but can save some money.
The Benefits of Bay Windows
Although the cost of a bay window may make you wonder if this project is worth the cost, there are some reasons to enhance your space with one.
More Floor Space
The interior space created by the bay window will end up being one of your favorite places in the home. Unlike other windows, the space inside the bay window area is completely usable. Many people place chairs, a breakfast nook, or even a piano in this spot.
Increased Home Value
Bay windows can increase the total value of a home. The improvement in value comes from a better design and a more impressive indoor space. Expect the increase in home value to be greater than the total cost of your bay window installation.
More Natural Light
The bay window lets light in from several different angles. This means that at any point of the day, you will notice more light entering the home. If you have a room that was otherwise a bit dark, the bay window installation will completely change the natural lighting.
Better View
For homes with a view of the water or nice landscaping and green space, a bay window is the perfect option. They give a warm and inviting feel more than just a single picture window.
Nook Seating
Bay windows are common in kitchens and dining spaces, and they can be a great place for built-in seating. The seating can be bench-style, so there is added storage under the seats.
DIY Vs. Professional Bay Window Installation
Some people choose to install their own bay windows, while others pay for professional installation. Professional installation is more expensive, and although the average price ranges from $150 to $600 per window, most quotes we found were above $350 for bay window installation.
If you attempt this process on your own, you must ensure you have some knowledge of construction. Bay windows aren’t quite as simple as installing casement windows or double-hung windows, and the weight of the bay window is heavy. Although DIY installation can save you money, make sure it’s enough money to make it worthwhile.
Neely explained that while installing bay windows yourself can save money upfront, there are multiple risks involved if you install them incorrectly. “Without the right skills and knowledge, a homeowner might struggle with the structural modifications required, leading to potential issues such as improper sealing, uneven installation, or compromised support. This can result in costly repairs down the road.”
This is why professional installation can minimize the risk of future problems with your bay windows. “Professionals have the tools and experience to handle the complex installation process, ensuring the window is both aesthetically pleasing and functional,” Neely told us.
Any of the window contractors below can help you with your window installation. Contact them to get free quotes.
This site receives compensation from the companies featured in this listing, which may impact where and how products appear. This listing doesn’t feature all companies, products, or offers that may be available.
How To Save on Bay Window Installation Projects
Expect to pay a minimum of several thousand dollars for your new bay windows. That said it is possible to save money on bay window installation costs. Here’s how:
Buy Multiple Windows at Once
One of the best ways to save money on bay window installation projects is to purchase more than one window at once. If you replace all the windows in your home, you’ll get a larger discount. It’s also easier to save on shipping and labor if you are having a large project done as opposed to just one window.
It also makes sense to get several quotes. If you get just one quote, you won’t have much to compare it to and could overpay for the installation.
Request Multiple Quotes
Since bay window replacement is a home improvement project, we highly recommend requesting at least three quotes from different window brands and contractors to compare options and pricing.
“Homeowners should get multiple quotes from qualified contractors to ensure they receive competitive pricing, high-quality workmanship, and the best overall value for their investment,” Jung said.
Although reducing the price of your bay window project may be top of mind, choose a reputable company with a solid warranty rather than settling for the cheapest option. Our team reviewed the best window replacement companies using our rating methodology, which considers a brand’s glass and labor warranties, window options, and installation procedures.
Choose Simpler Designs
As with most home improvement projects, the simpler design and materials you select, the less you’ll spend on bay windows. Kevin Jung, the director of product engineering at Waltham, Massachusetts-based Harvey Windows + Doors, which is part of the Cornerstone Building Brands family, recommends choosing smaller windows and a mixture of fixed and operating window units. Additionally, opt for vinyl window frames instead of more expensive wood frames.
How Do Bay Window Costs Compare To Other Window Types?
Bay windows tend to cost more than other types of windows. The table below illustrates how bay windows compare to other popular window styles:
| Window Type | Low-End Cost | High-End Cost |
| Storm | $100 | $400 |
| Single-hung | $200 | $400 |
| Double-hung | $430 | $915 |
| Awning | $430 | $830 |
| Egress | $300 | $1,500 |
| Glass block | $500 | $1,000 |
| Casement | $500 | $1,000 |
| Skylight | $500 | $2,000 |
| Picture | $700 | $1,300 |
| Bow | $2,000 | $4,000 |
So, Are Bay Windows Worth the Cost?
Bay windows are worth the cost for the impressive look and design they can bring to the home. Most bay windows change the look of the home’s exterior and interior. They provide natural light and can create a new area for reading, eating, or spending time with your family. Bay windows can also enhance your internal living space by adding a reading nook or panoramic views. “Homeowners who enjoy decorating and want to create unique interior spaces would particularly benefit from bay or bow windows,” Neely said.
However, bay window prices are generally much higher than other window styles. Correct installation may require modifications to your home. If budget is your main concern, consider a more affordable window style. And remember, get several quotes for bay windows to ensure that you’re getting the best deal possible.
Frequently Asked Questions
Bay windows provide natural light, the addition of indoor living space, and a better view of the outside. The downsides of bay windows include trouble with energy efficiency, high installation costs and the labor and construction involved with putting one in.
Some homeowners will call bay windows bow windows, but they’re exactly the same type of window. Sometimes people call these alcove windows.
You can turn regular window openings into bay windows with the proper construction and design. This sometimes requires customization of the window or the place where the window is installed.
Check with your local ordinance about the bay window and whether or not you need permission to put it in a bay window. Chances are you’ll need some type of permission as it is a structural change to a home.
Bay windows aren’t out of style and are still used in modern construction. However, the bay window style is changing to allow for a more clean line look.
Bay windows typically go about two feet away from the home.
Bay windows are expensive, so naturally, you’ll want to ensure they last many years. Performing regular maintenance on your bay windows can keep them in great condition. While most maintenance steps apply to all window frame materials, some are material-specific.
Neely recommended regularly cleaning your bay window’s glass and frames to prevent buildup in addition to inspecting the window’s caulking and seals. “For wooden frames, applying a protective sealant or paint will help protect against moisture and weather damage,” he added.
