Cost to Replace a Window – 2021

| Last Updated: August 24, 2021

National Average Improvement and Repair Cost







$ 640

$ 300

Would you do this project? According to our survey, 49% of respondents preferred DIY compared to hiring a pro.

The average price to Replace a Window noted above is cost data to compare a contractor’s estimate with doing it yourself.

Replacing an old window with a new energy-efficient unit can make a remarkable improvement to a room, not to mention lower energy bills. An awning window provides light and opens outward to catch the breeze, making it a good choice in any room. The sash closes tightly against the frame, making it better than a traditional double-hung unit at stopping air infiltration.

A single large awning window is often used in a kitchen over a sink; pairs of them often flank other windows or are arranged together over large patio doors. When you remodel a basement, replacing an old awning window goes a long way in making the space down under more livable and attractive. Awning windows fold in or out to reveal the glass’s exterior, which allows it to be cleaned from inside your home.

A window contractor will charge $640 to install a 3-ft-by-4-ft awning window, which includes the labor and material. If you have carpentry skills and tools, you can do the job for $300, the cost of the window, and pocket a 53 percent saving. The cost will be higher if new trim on the inside is needed and the exterior siding needs to be replaced around the new window.

You know you should consider replacing a window if you can feel air coming through it on a windy day. The old candle test has been around for a while, but it still works. Hold a lit candle near the window on a windy day and if the flame flickers or goes out, your window needs attention: new weatherstripping, a new system of window jamb liners, or a new replacement window.

Plan the project so you can remove the old window and immediately install the replacement; otherwise, the gaping hole in the wall may invite birds or animals to come inside.

At Pella’s Web site you can learn about different window styles to choose what type of window will be best for you Window Styles.

That sums it up. Knowing the average cost to replace a window lets you compare doing it yourself with what you can expect to pay a contractor.

Welcome! We hope you’ll find the job costs of home improvement projects useful when you’re deciding whether to do a job yourself vs. hire a contractor. We’re the authors of 20 home improvement books, most notably Home Improvement for Dummies©, Bathroom Remodeling for Dummies©, Carpentry for Dummies©, Plumbing for Dummies©, and Painting and Wallpapering for Dummies©. Our most recent book Fix It and Flip It is in its second edition. We’ve appeared as home improvement experts on television programs such as CNN, Dateline, the Today Show, HGTV and many others.