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Bay Window Installation Costs

Average cost: $1,150 - $3,550

Low End
$1,150
Average
$2,350
High End
$3,550
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Bay Window Replacement

Bay windows are known for making the most of beautiful outside views and giving your home more access to natural sunlight. They are popular in kitchen – dining areas as well as living rooms. While most windows are fixed in the walls of a home, bay windows stretch out and around those boundaries. Bay window replacement is a wildly popular option for homeowners looking to upgrade their home. You’ll be able to see more of your outside space and bring a ton of natural light into your home. We will guide you through everything you would want to know about installing a beautiful new bay window below.

bay window installation

Difference Between Bay & Bow Windows

bay window is a set of three windows, which are angled out and away from the house.  A bay window’s center window is typically a large fixed picture window with smaller windows on each side, often double hung or casement windows are installed (called flankers.) The similar but different window style is the bow window, which typically has four or five windows that curve to create a rounded structure from the exterior of your home. See pictures below.

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How Much Do Bay Windows Cost?

The average cost for a vinyl, medium sized, 3 panel replacement bay window installation is $1,150 to $3,550. Labor & installation costs can be from $300 to $500. Prices will depend on the type of bay window you want and the local installation prices that are common for your area. Let Modernize get you an exact local price below.

How Much Do Bow Windows Cost?

In comparison to a bay window, the cost for a vinyl, 5 panel, replacement bow window installation will average  $3,600 in total for materials and labor. Labor & installation prices can be from $300 to $500 alone. Depending on the size of the bow window to be installed and the local installation prices it could be more or less. Let Modernize get you an exact price today.

bay vs bow windows

Bay Window Prices by Brand

The best window brands will offer bay windows with different frame types to choose from which will determine total installation costs. Typical bay windows come in vinyl, wood frames, wood-clad, and a few other options. The total cost will depend on the size of the bay window and if extra labor will be needed for a new rough cut opening to install.  A premium Bay window by Pella or Andersen windows from their 400 series would cost around $2,100 for the window and $2,882 in total with labor and installation costs. If you were looking for a more affordable bay window, you could install a Simonton Bay Window from their Prism series for around $1,387 in installation costs. See average bay widow prices by brand in the chart below, costs will vary depending on many factors, so use the chart only as a general guide:

Bay Window BrandsPrice per windowInstallation Costs
Alside Bay Window$1,525 $1,989
Andersen 400 Bay Window$2,045 $2,582
Atrium Bay Window$1,756 $2,045
CertainTeed Bay Windows$988$1,300
Harvey Bay Windows$1,050 $1,289
Jeld Wen Bay Windows$1,692 $2,093
Loewen Wood Bay Windows$1,985 $2,208
Marvin Bay Window$1,567 $1,843
Milgard Bay Windows$1,299 $1,567
Pella Bay Windows$1,800 $2,245
Ply Gem Bay Windows$1,389 $1,625
Simonton Prism Bay Window$1,100 $1,387
Simonton Prism Bow Window$995$1,399

Bay Window Sizes

Bay windows can be as small or as large as you want. A small bay window size is usually about 3 ft 6in. in width x 3 ft in height, and a large bay window size can take up the better part of a wall at 10 ft 6 in wide x 6 ft 6in. high. When deciding on the size of a replacement bay window, it’s important to consider what the window will be used for, and the size of the room that it’s going in. Due to the size of many bay windows, not every room in your home will work for a bay or bow window installation. Some sections of the wall may need to be reinforced more than others, because they bear more weight from the house. A large bay window often increases your home’s value quite a bit, making it a great window installation project.


Bay Window Types

  • Angled Bay Windows: New bay windows are offered in two different styles. A standard angled bay window is the most common bay window type installed. It juts out from the exterior wall at a 30 to 45 degree angle and can even offer you a comfy bay window sitting area in the room installed.
  • Boxed Bay Windows: A box bay window or sometimes called a greenhouse garden bay window is squared like a garden window and protrudes from the homes exterior wall at a 90 degree angle. These windows are great for display area or to use as a large indoor gardening area for house plants.
  • Energy Efficient Bay Windows:  A windows energy efficiency will depend on the type of glass installed and any other specialty features added from your bay window manufacturer. Bay windows can be an energy efficient window option when you install a fixed picture window with energy efficient casement windows (flankers) on each side.

bay window installation

Bay Window Repairs

A new bay window should have quite a long life-span especially if taken care of properly. If you need to do some repairs to your bay window, it may be a more cost efficient option than installing a new bay window replacement. Some of the most common bay window repair projects you will run into will be:

  • Bay window glass repair
  • Bay window glass replacement
  • Repairing a bay window sill
  • Repairing an air/water leak in your bay window
  • Rotting bay window frame repair

Some of these projects may be able to be completed as a DIY repair project; however, it may be best to reach out to a professional to get help so that you don’t run into future issues from not having an expert resolve the problem early on.

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