Cost to Install a Casement Window – 2021

| Last Updated: August 24, 2021

National Average Improvement and Repair Cost







$ 678

$ 365

Would you do this project? According to our survey, 54% of respondents preferred DIY compared to hiring a pro.

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

What’s the cost to install a casement window? The contractor cost to install a casement window is $678 vs. doing it yourself for $365 and saving46 percent.

A casement window is a good choice when a room needs ventilation. It opens on its side at the turn of a crank, so it’s easier to operate than lifting a traditional double-hung window. We’ve often installed a casement in small bathroom makeovers because the window’s narrow shape takes up so little wall space but allows opening and closing with relative ease.

Casement windows are made of wood or vinyl, and they come in a variety of sizes and shapes. Like any good window, a casement closes tightly and prevents air infiltration, with the bonus feature of a foldaway handle that won’t interfere with shades or blinds. You’ll find them at home centers, lumberyards, and window companies.

A window company will charge $678 to replace an old window with a new, good quality 2-by-4 foot wooden casement style window. That includes labor and material and assumes the new window is the same size as the existing one and it will fit into the rough opening so it’s a direct replacement. If enlarging or decreasing the opening is needed, the carpentry work on the interior and exterior will increase the cost.

You can buy the unit for $365 and install it yourself, pocketing a 46 percent saving. You’ll need carpentry skills and tools; it will take several hours to remove the old window and prepare the opening for the new one.

Installation involves positioning and securing the new unit in the opening, finishing it with trim and molding both on the interior wall and on the exterior siding of the house.

Here’s Pella’s glossary of Window Styles.

The bottom line: compare the price of a contractor’s bid to install a casement window with what it costs to do it yourself and make your decision. 

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.