What Is the Cost of a Bay Window?

How Much Does a Bay Window Cost?

The average cost for a vinyl, medium-sized, three-panel replacement bay window is $1,732 to $3,960, which includes the cost of materials plus installation. Let’s break the cost of installing a bay window down into parts.

Bay Windows

Average Installation Cost $1,732 - $3,960

Cost Breakdown

• Materials 95.4%
• Labor 4.6%

Bay window materials, such as window glass and frames, should cost an average of $1,393 to $2,969 per window.

For each bay window, labor and installation cost an average of $70 to $150. Demolition and materials will be factored into the cost of bay windows.

There are several other factors that can influence the price you’ll pay when you’re replacing a bay window, such as their size, and the type and brand you choose. We’ll break down each of those factors on this page.

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Bay Window Sizes and Prices

Although bay window replacements can be custom-made, they generally range in size from 4 to 10 feet wide by 3 feet high. For a breakdown of the cost of bay windows by size, review the table below.

You can read more about average bay window sizes, the smallest bay windows available, and the largest bay windows available.

Bay Window Costs by Brand

Just as you want to find the best contractor when you replace bay windows, you also want to choose the best brand. Not only does the brand you pick for bay window replacement matter because you want a high-quality product that will last a long time, but the right brand is important because not every product may be appropriate for the look you’re trying to achieve for your home.

One of the top brands for bay window replacement is Andersen Windows. For over a century, the company has been known for both the quality of its windows and its customer service, making it one of the best brands for bay window replacement. From colors to frame types to shapes to operable styles, Andersen Windows has a wide range of products to choose from, and these windows are well-known for their energy efficiency as much as their quality.

Another top brand is Pella — known for its sustainable and energy-efficient products — which boasts over 150 patents so you have a large catalog of windows to choose from. The company provides stylish yet affordable windows, allowing homeowners to replace bay windows without exceeding their budget. Additionally, Pella products can help reduce utility bills, offering further savings.

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Before You Replace Bay Windows: What Impacts Bay Window Prices

If you want to replace a bay window, the following are some considerations that can ultimately impact your project’s cost. Some of these are only applicable to installing a new bay window, some apply to bay window replacements, and some are meaningful to both types of projects.

Size

Bay windows are usually 4–10 feet wide by 3 feet high. When you make your decision, consider the size of your current windows. If the new ones are larger than the ones you have, that will add to the cost of the project.

Eaves

An eave is the edge of a home’s roof that hangs over the exterior siding. Bay windows tend to be installed beneath a home’s eaves, so contractors need to measure them for the proper fit. When there are no eaves on a house, a small roof is constructed for the windows.

Sash

Sashes are necessary to keep any window in place, so you need to pay attention to the kind of sash that fits your specific window. For example, narrow windows work best with a casement sash, while double-hung windows need larger sashes.

Frame and Glass

Usually, bay windows have small frames, although that may differ depending on the type you choose. Also, you should think about the type and color of glass you’d like to use in your windows, as well as the coating the windows should have.

Installation Location

Although these windows can be installed in living rooms, kitchens, bedrooms, or home offices, you should think about the best place to get a bay window replacement. Depending on the size of the room, as well as how much light and ventilation you want, bay windows may not be the right option for certain areas of the house.

Structural Support

Bay windows enhance your home’s beauty but add extra weight, requiring proper support to maintain structural integrity. Options include tension cables, tie rods, reinforced concrete beams, or steel braces, depending on the window type and location. Without support, the home may sag or collapse under the weight.

Budget

While replacing bay windows can add value to your home in the long term, it’s still important to consider your budget in the short term. These windows can be pricey, even when you choose the most affordable options, so as you work with your contractor, don’t forget to keep your eye on the budget.

Climate and Material

Like other windows, it’s essential to work with your contractor to choose the right materials for your bay windows based on your climate. Depending on local weather, certain glass types may offer better energy efficiency and help maintain your home’s desired temperature.

Cleaning and Maintenance

To ensure that your windows always look great, you’ll want to do a deep cleaning at least once a year. This not only includes the interior and exterior of the glass, but also the hardware, frames, and screens.

Lifespan

Bay windows have a long lifespan, so depending on the type you choose, they can last between 20 and 25 years. Of course, this also depends on how well they’re installed, so you want to find someone who specializes in bay window installation to decrease the chances of shoddy work shortening the windows’ life expectancy.

Finding Bay Window Installers

It can be challenging to find the right bay window replacement installer, but Modernize is here to make it easier. We have vetted professionals in your local area, so you can confidently choose a window installer because you know they have the experience needed to get the job done. 

As you explore your options, be sure to use our interactive checklist, which will help you easily weigh the pros and cons of each potential contractor you’re interested in.

We always recommend getting three to four quotes for your project so that you can find the best price.

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