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A basement bedroom needs a code-sized egress window. Under IRC R310, it needs at least 5.7 sq ft net clear (5.0 sq ft at or below grade), 24 in. clear height, 20 in. clear width, and a sill no higher than 44 in. We cut the opening, install the window and set the well across the Denver metro. (IRC R310)
What we install
Egress windowsLarger openings so basement bedrooms have a way out.Egress Window Installation →
Window wellsNew or replacement wells, with ladders where needed.Window Well Installation & Replacement →
Well coversKeep out snow, leaves and debris.Window Well Covers →
Concrete cuttingNew openings cut in the foundation.Basement Egress & Concrete Cutting →
Well cover photo: Madison Scott-Clary, CC BY 2.0, cropped
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Costs vary by depth, soil and window size — see our cost guide.
How it works
- Step 1Tell us about your projectName, phone and ZIP. That’s it.
- Step 2We’ll call you backWe go over your project and answer questions.
- Step 3Get your free quoteNo obligation.
Need a permit?
Basement bedrooms generally need an escape opening under IRC R310 (ICC; Arapahoe summary). In Denver, new egress windows need a permit (Denver CPD).
Areas served
- Aurora
- Lakewood
- Littleton
- Arvada
- Westminster
- Thornton
- Centennial
- Highlands Ranch
- Parker
- Castle Rock
- Englewood
- Broomfield
- Wheat Ridge
- Northglenn
- Brighton
- Lone Tree
- Castle Pines
- Ken Caryl
- Golden
- Commerce City
- Denver
- Boulder
- Longmont
- Erie
- Louisville
- Lafayette
- Superior
- Evergreen
Counties and small towns
Frequently asked questions
How big does a basement egress window have to be?
Under IRC R310, the minimum net clear opening is 5.7 sq ft (5.0 sq ft for a grade-floor or below-grade opening), with at least 24 in. of clear height and 20 in. of clear width, and the sill can be no more than 44 in. above the floor. Your city may amend these numbers, so check with them.
Ready for a free quote?
Free and no obligation.