Budget for bow window costs based on factors such as brand, material, number of panes, customizations, labor, replacements vs. new installations, and more.
How Much Does Installing a Bay Window Cost in 2026?
Normal Range: $2,000 - $4,000
Putting in a bay window costs an average of $2,500
How we get this data
Photo: gollykim / E+ / Getty Images
Photo: gollykim / E+ / Getty Images
Cost Overview:
Bay window installation costs between $2,000 and $4,000, with labor making up $1,000 to $1,500 of your total project expense.
The type of framing material you choose and the window size determine your final installation cost, with aluminum costing less than fiberglass or wood.
You should account for building permits, delivery fees, construction cleanup, and energy-efficient glass upgrades when creating your bay window budget.
Hiring a local window repair professional ensures your bay window is properly sealed and structurally supported to last for years.
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This article was updated using automation technology and thoroughly reviewed for accuracy by HomeAdvisor Editor Ryan Noonan.
Bay windows cost an average of $2,500 to install. Prices range from $1,000 for a smaller bay window with single-pane glass to $8,000 for a larger, energy-efficient window with custom features. Proper budgeting and hiring a professional helps ensure a successful installation.
Bay Window Cost Factors
The average total cost to install a bay window is $2,500, with labor costing between $1,000 and $1,500 per window. Higher-quality materials and larger windows, as well as add-ons like energy-efficient glass, may raise the cost. Here’s a breakdown of the cost factors that will make up your bay window installation total.
Types
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Bay window materials cost $500 to $3,000, depending on the type of window. Small box windows fall in the lower end of this range, while circle bay windows tend to be more expensive. These are the different types of bay windows to choose from:
Box: Box bay windows are small and popular in kitchens for growing herbs.
Full: Full, or canted, bay windows feature a large, flat center glass panel and two smaller, angled glass panels.
Circle: Circle bay windows feature curved glass panels.
Oriel: Oriel windows provide decorative and structural support and add a classic look to a home.
Labor
Hiring professional window installers costs between $1,000 and $1,500 per window. You may pay more if a new opening is required for the window installation than if you place a bay window in an existing opening. Here are some labor costs to consider:
If you need to open up a wall for your window, you can expect to pay an average of $3,000, plus an additional $550 for a structural engineer and $250 to $500 for a general contractor.
The cost to install hurricane windows is between $30–$65 per hour. They typically take two hours to install.
Construction cleanup costs $475 on average.
Permits
Obtaining building permits costs about $50 to $250 for window projects, but the final cost depends on the location.
Delivery Fees
You may incur additional fees to have the windows delivered to your home. Professional window installers may also charge fees if your home is far from their business location.
Features
You may opt for add-ons to make your windows more energy-efficient or functional with features like specialized trim or glass. The more features you include, the higher the cost of each bay window will be:
Energy-efficient glass: Triple-pane glass, gas-filled glass, or other energy-efficient glass panels increase the window cost by up to 25%.
Trim: Interior trim finishes or repairs can add $0.50 to $10 per square foot to the cost of each window.
Bay Window Cost by Framing Material
Although the average price for a bay window is $2,500, this number fluctuates based on the type of framing material you choose.
| Framing Material | Average Cost |
|---|---|
| Vinyl | $2,500 |
| Wood | $2,800 |
| Aluminum | $2,000 |
| Fiberglass | $3,200 |
| Composite | $2,800 |
Bay Window Installation Cost by Size
Bay windows are available in a variety of sizes to suit your style and needs. Most bay windows range from 4-to-10-feet wide and 3-feet tall. Wider and/or taller bay windows can cost up to $7,500 for just the window materials, and labor costs may increase for larger windows.
| Size (in Feet) | Cost (Materials Only) |
|---|---|
| 4x3 | $1,400 |
| 5x4 | $2,500 |
| 6x4 | $3,000 |
| 5x5 | $3,200 |
| 5x6 | $4,500 |
| 5x8 | $6,000 |
| 6x6 | $5,400 |
| 6x8 | $7,500 |
DIY vs. Hiring Bay Window Installers
Homeowners may save about 10% to 15% of the total installation cost by choosing the DIY route, but mistakes or improper installation can be costly. Since bay windows extend beyond the walls of the home, they need proper support.
Whether replacing an existing window or installing a new bay window entirely, it is important to call a professional window installer. A qualified installer will ensure the correct size and properly install and seal the window so that it is built to last. Hire a professional window installer to ensure your bay window is installed safely and correctly.
How HomeAdvisor Gets Its Cost Data
No place is more important than your home, which is why HomeAdvisor connects homeowners with local pros to transform their houses into homes they love. To help homeowners prepare for their next project, HomeAdvisor provides readers with accurate cost data and follows strict editorial guidelines. After a project is complete, we survey real customers about the costs to develop the pricing data you see, so you can make the best decisions for you and your home. We pair this data with research from reputable sources, including the U.S. Bureau of Labor Statistics, academic journals, market studies, and interviews with industry experts—all to ensure our prices reflect real-world projects.
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