Bay Window Replacement Cost


Bay windows are a sought-after style of window for lots of different homes. They tend to be more expensive than standard flat windows, however.

If you’re looking to replace existing windows with bay windows, or fix broken bay windows, what kind of price should you expect to pay?

Definition of Bay Windows

Many homeowners install bay windows in a kitchen or living room to form an indoor window garden, or reading nook.

This popular type of window has both advantages and disadvantages.

Bay window replacement costs can be steep, but knowing as much as possible will help you keep your expenses down.  

Advantages and Disadvantages of Bay Windows

Some of the advantages of bay windows are:

  • They allow lots of natural light into the home from various angles.
  • They add curb appeal from the structure’s exterior.
  • They create extra seating and shelving space – great for smaller rooms.
  • Bay windows increase property value from the extra square footage in the home.
  • They introduce timeless aesthetic appeal that suits both traditional and modern building styles.

There are also a few drawbacks to bay windows, which are:

  • They cost more than traditional flat-pane windows.
  • Bay window replacements are tougher than just removing a traditional flat or picture window pane, and installing the new window in its place.
  • Fairly extensive building renovations might be required, depending on the window position.
  • Permits might be required for the structural work done.
  • Window cleaning becomes more difficult as there is more surface area.

For an outside observer, bay windows have great curb appeal and draw attention to the house. From the inside, they add space, increase warmth and lighting, and can be functional as well as decorative.

Types of Bay Windows

The main types of bay windows are boxed bay, and full bay.

Boxed Bay Windows:  A boxed bay window generally has a larger front sash and two side sashes that sit at a 90-degree angle to the exterior wall. The sashes can be either casement or double-hung.

Full Bay Windows: Full bay windows are usually much larger than garden box windows, are installed in living rooms and bedrooms, and cost more.

Bay Window Materials

When it comes to the best materials for bay window framing, there are four major options: Vinyl, wood, aluminum, and fiberglass.

Vinyl is one of the cheapest materials on the market. It’s also durable and easy to maintain. However, it might not have the aesthetic quality you’re looking for.

Wood is also an affordable option, and it’s the longest-lasting choice if properly cared for over time.

Aluminum is on par with wood, cost-wise. It can withstand extreme weather conditions, and can also be painted to suit your home design or color scheme.

Fiberglass is a newer material option, and it combines aesthetics with durability.  However, it can be the most expensive choice for bay windows.

Bay Window Replacement Cost Factors

Every bay window project will be different, depending on your home and the scope of the job. However, there are some factors that will influence the cost of your bay window replacements. You should be aware of these things when planning your project:

  • Window material
  • Thickness, coating or rating of glass panes
  • Number of bay windows to be installed at the same time
  • Size of the bay window
  • Replacement bay window or new installation
  • Number of panes used in bay window (usually up to five)
  • Addition of shelves or seating in the bay window interior
  • Labor costs

Bay Window Prices


Bay windows are a very attractive addition for your home, but they can come with an unattractive cost attached!

When getting estimates from contractors, make sure they quote you on the cost of installation as well as the bay windows themselves.

The cost of a bay window replacement will depend on what floor your window is being installed, the size of the window, the number of glass panels, and whether you’re replacing an old bay window or installing a completely new window setup.

As you have no doubt seen from all the variables involved in a bay window replacement, it’s not that easy to estimate the costs.

Here is an overview of the average prices you can expect to pay.

Type Size Price Range Installation Cost
Boxed Bay 3′ x 3′ and upFrom $1,150 $300-$500
Full Bay 6′ x 6′ and up From $3,550 $500 +


Bay window replacements are versatile, and can fit perfectly into your home architecture and your personal style.  

Although a sizeable installation can cost you thousands in materials and labor, these windows add extra lighting and space, and curb appeal.

You will definitely get a return on your investment with this type of window.