Omaha Egress Windows: Making a Basement Bedroom Count

A basement egress window typically costs $2,500–$5,000 installed, with a $3,500 national average, according to Fixr's 2025 cost guide; a custom unit can run $3,000–$7,500. Omaha enforces the 2018 International Residential Code, which asks for at least 5.7 sq ft of clear opening, 24 in of height, 20 in of width and a sill no higher than 44 in.

Why so many Omaha basements need one

Basements are the norm here. The Energy Information Administration's 2024 housing survey found that 69% of Nebraska homes have one, against 30% of homes nationally. Omaha's housing is also older than most: the median home in the city was built in 1973, about 61% of homes predate 1980, and nearly 18% were built in 1939 or earlier (U.S. Census, ACS 2020–2024).

Houses of that era often came with short hopper or glass block windows set high in the foundation wall. They were meant to let in some daylight, not to let anyone out. That gap tends to surface at a few predictable moments:

• finishing the basement and adding a bedroom;
• a buyer's inspection that questions a downstairs "bedroom";
• getting a house ready to list;
• replacing a rotted or cracked basement window anyway.

What Omaha counts as a sleeping room

The City of Omaha's amendments to the 2018 code, effective July 1, 2020, add a plain test. A sleeping room is any room in the house that is greater than 70 sq ft, has built-in closet space and typically could be used as a bedroom. Kitchens, family rooms, bathrooms, halls, storage, utility rooms and workshops are excluded.

Every sleeping room needs its own emergency escape and rescue opening (IRC R310.1). Omaha also struck out the exception that lets a home with fire sprinklers skip that opening in basement bedrooms, so sprinklers don't change the answer here. Our guide to Omaha's basement bedroom rules walks through the definition room by room.

Egress work for Omaha homes

• Basement egress window installationCutting or enlarging the opening, setting the unit, the well and the trim.
• Window wells and coversWell sizes, ladders, drainage and covers that still open from below.
• Basement window replacementSame-size swaps, the replacement exemption, and when to go egress size.
• Egress window cost, 2026National cost-guide figures for covers, wells, windows and full cuts.

Omaha code background

• Omaha's basement bedroom rulesThe 70 sq ft and closet test, the sprinkler exception Omaha removed, and remodels.

The measurements an inspector checks

Section R310 of the 2018 IRC, which Nebraska adopts in state law (Neb. Rev. Stat. 71-6403) and Omaha enforces with its own amendments, sets these minimums:

• Net clear opening: 5.7 sq ft with the window fully open; 5 sq ft for grade-floor or below-grade openings.
• Clear height at least 24 in and clear width at least 20 in.
• Sill height no more than 44 in above the floor.
• Operation from inside, without keys, tools or special knowledge.
• Window well of at least 9 sq ft, at least 36 in out from the wall and 36 in wide.
• Ladder or steps, permanently fixed, once the well is deeper than 44 in.

All three opening dimensions have to be met at once. A window can be 24 in tall and 20 in wide and still fall short of 5.7 sq ft, which is why the specific unit matters more than the rough opening size.

Wells, covers and Omaha winters

The window is half the job. The well outside it has to stay usable in the months when you'd least want to climb through it. Omaha Eppley Airfield averages 27.1 inches of snow a year and about 135 nights at or below freezing (NOAA 1991–2020 normals). The wettest months are May, at 4.66 inches, and August, at 4.60.

That is why the cover and the drainage deserve as much thought as the window. The code lets you cover a well, but the cover must come off or open from inside without a key, a tool or extra force (R310.4). The well itself should drain into the foundation drainage system or another approved method (R310.2.3.2). The window wells and covers page goes into sizes, ladders and cover types.

Test for radon before you finish the space

Douglas County sits in EPA Radon Zone 1, the group with the highest predicted indoor levels, and the EPA's map notes that every home should be tested regardless of zone. A basement about to become a bedroom is a sensible place to run a test first, while walls are still open and a mitigation pipe is easy to route.

Who does the work

This site publishes information and does no installation itself. A request sent from it is passed to a single independent egress window installer serving Omaha, who then phones you. Before you agree to anything, ask who pulls the permit with City of Omaha Permits and Inspections, which window unit is proposed and its net clear opening, and for a written, itemized price. The Omaha egress window price guide lists typical ranges line by line.