An egress window is the code-required emergency exit that makes a basement bedroom legal — and installing one means cutting through your foundation. It costs $2,500 to $6,000 in 2026, averaging around $4,000, depending on your foundation and whether there’s an existing opening.
What you’re paying for
The window is the cheap part. The cost is in cutting the foundation, excavating and building the window well, adding drainage, and finishing — plus permits and an inspection to confirm it meets exit code.
New cut vs. existing opening
Enlarging an existing basement window is the cheaper path. Cutting a brand-new opening through poured concrete is the priciest, since it’s slow, dusty, structural work.
It’s about code, not just light
An egress window must meet size and sill-height rules so a person can climb out in an emergency. That’s why a basement bedroom legally requires one — and why the well and cover matter too.
How to save on an egress window
- Use an existing opening if one exists to enlarge.
- Bundle it with a basement finish that’s already disturbing the area.
- Plan drainage upfront to avoid a wet well later.
- Pull the permit — an uninspected egress can derail a home sale.
| Item | Typical range | Notes |
|---|---|---|
| Egress window unit | $300 – $1,000 | – |
| Cutting foundation / enlarging opening | $800 – $2,500 | – |
| Excavation & window well | $500 – $1,500 | – |
| Well cover, drainage, gravel | $200 – $800 | – |
| Interior finishing & permits | $300 – $1,200 | – |
| Option | Typical range | Notes |
|---|---|---|
| Enlarge an existing opening | $1,500 – $3,500 | – |
| New cut in poured concrete | $3,000 – $6,000 | – |
| New cut in concrete block | $2,500 – $5,000 | – |
| With finished well & cover | +$500 – $1,500 | – |
What affects the price
- New cut vs. existing opening Enlarging an existing window is cheaper than cutting a brand-new opening through a foundation wall.
- Foundation type Poured concrete is the hardest (and priciest) to cut; block and wood-frame walls cost less.
- Excavation & window well Digging the well, adding gravel and drainage, and installing a well and cover are a big part of the job.
- Depth & drainage Deeper wells need a drainage system tied to the foundation drain to prevent water pooling.
- Permits & code Egress windows must meet size and sill-height code for emergency exit, and permits and inspection add cost.
Egress window cost by state
Where you live can change the price as much as the options you pick. Labor is a big part of the bill, and construction workers are paid more in some states than others. A typical egress window job costs about $2,900 to $7,000 in Hawaii (17% above the U.S. average). In Arkansas, it costs about $2,100 to $5,100 (15% below the U.S. average).
See the typical cost in all 50 states and D.C.
| State | Typical range |
|---|---|
| Alabama | $2,200 – $5,200 |
| Alaska | $2,900 – $6,900 |
| Arizona | $2,400 – $5,700 |
| Arkansas | $2,100 – $5,100 |
| California | $2,800 – $6,700 |
| Colorado | $2,500 – $6,000 |
| Connecticut | $2,700 – $6,400 |
| Delaware | $2,500 – $5,900 |
| District of Columbia | $2,700 – $6,500 |
| Florida | $2,300 – $5,500 |
| Georgia | $2,300 – $5,500 |
| Hawaii | $2,900 – $7,000 |
| Idaho | $2,400 – $5,600 |
| Illinois | $2,900 – $6,900 |
| Indiana | $2,500 – $6,100 |
| Iowa | $2,400 – $5,800 |
| Kansas | $2,400 – $5,700 |
| Kentucky | $2,300 – $5,600 |
| Louisiana | $2,300 – $5,400 |
| Maine | $2,500 – $5,900 |
| Maryland | $2,500 – $6,000 |
| Massachusetts | $2,900 – $6,900 |
| Michigan | $2,500 – $6,000 |
| Minnesota | $2,700 – $6,500 |
| Mississippi | $2,200 – $5,200 |
| Missouri | $2,600 – $6,100 |
| Montana | $2,500 – $5,900 |
| Nebraska | $2,400 – $5,600 |
| Nevada | $2,600 – $6,200 |
| New Hampshire | $2,500 – $5,900 |
| New Jersey | $2,800 – $6,800 |
| New Mexico | $2,300 – $5,500 |
| New York | $2,800 – $6,600 |
| North Carolina | $2,300 – $5,400 |
| North Dakota | $2,500 – $6,100 |
| Ohio | $2,500 – $6,000 |
| Oklahoma | $2,300 – $5,500 |
| Oregon | $2,800 – $6,600 |
| Pennsylvania | $2,500 – $6,100 |
| Rhode Island | $2,600 – $6,200 |
| South Carolina | $2,300 – $5,500 |
| South Dakota | $2,300 – $5,400 |
| Tennessee | $2,300 – $5,500 |
| Texas | $2,300 – $5,500 |
| Utah | $2,400 – $5,600 |
| Vermont | $2,400 – $5,800 |
| Virginia | $2,400 – $5,700 |
| Washington | $2,900 – $7,000 |
| West Virginia | $2,400 – $5,700 |
| Wisconsin | $2,600 – $6,200 |
| Wyoming | $2,500 – $5,900 |
These are numbers to plan with, not quotes. Each one is this guide's U.S. range, adjusted for what construction workers earn in that state. See every state cost guide or how we estimate.
Common questions
- How much does it cost to install an egress window?
- Most egress window installs run $2,500–$6,000, averaging about $4,000. Enlarging an existing opening is cheaper ($1,500–$3,500); cutting a new opening in a poured concrete foundation is the most expensive.
- Why do I need an egress window?
- Building code requires an egress window in any basement bedroom or finished sleeping area — it's a code-sized emergency exit and lets light in. Without one, a basement bedroom isn't legal and can cause problems at resale.
- What makes a window 'egress'?
- It must meet minimum size requirements (typically about 5.7 sq ft of opening, with minimum width and height) and a maximum sill height so a person can climb out, plus a window well large enough to exit if it's below grade.
- Does an egress window add home value?
- Yes — it makes a basement bedroom legal and livable, which can add significant usable square footage and resale value. It's often a required step when finishing a basement to add a bedroom.
- Can I install an egress window myself?
- Cutting a foundation wall, sizing to code, and waterproofing the well are high-risk DIY — mistakes cause leaks or structural issues. Most homeowners hire a pro, especially for poured-concrete foundations.
How we estimate: These are typical U.S. prices for materials and for hiring a pro to install them. We checked them against the 2026 sources listed below (see how we get our numbers). Your price depends on where you live, the size of the job and the materials you pick. Get two or three written bids before you choose a contractor.
Sources
We checked the prices on this page against 2026 numbers from these sources:
- Egress Window Cost (2026), HomeGuide
- How Much Does an Egress Window Cost?, Angi
- How Much Does an Egress Window Cost?, Bob Vila