The two totals, and why they are so far above the window
| Source | Range | National average | Updated |
|---|---|---|---|
| Fixr | $2,500 to $5,000 | $3,500 | August 29, 2025 |
| Bob Vila | $2,621 to $5,662 | $4,129 | January 21, 2024 |
These are close enough to be useful and different enough to be independent, which on this site is worth saying. The averages are $629 apart, our arithmetic, and the ranges overlap across almost their whole length.
Now put that next to what the window costs. Bob Vila prices the unit at $100 to $700 per window and fitting it at $100 to $250 per window.
Our arithmetic, marked as ours: window plus fitting comes to $200 to $950. Against a national average of $4,129 on the same page, the window and its fitting are a small fraction of the job. Bob Vila also gives labor as $40 to $100 per hour, or roughly $100 to $1,000 per window in total.
Our reading. Everything above $950 on that page is ground work. If you are pricing an egress window, you are mostly pricing a hole in the earth outside your basement wall, and that is the line to interrogate on a quote.
Why a basement egress window costs what it does
Fixr names the mechanism plainly: an egress window installed below ground requires excavation and the installation of a window well, and it states that because of extra features such as window wells, it is less costly to install one above ground, in a living room for instance, than in a sub-floor room like a basement.
It also notes a code constraint on the well itself: the International Building Code stipulates dimensions for these wells, and a window that swings inward allows a smaller well, because the sash does not have to clear the well sides when it opens.
Our reading, marked as ours, and this is the practical lever. The direction the window opens changes the size of the hole you have to dig and line. That is not a detail a brochure will raise, and it sits upstream of the largest cost on the job. If a quote assumes an outward-opening unit, it is worth asking what an inward-opening one would do to the excavation and the well.
The other lever is simply where the window goes. If your reason for an egress window is a bedroom that needs a legal escape route, the room is fixed. If it is a basement conversion still being planned, the position within the basement, and how deep that corner sits, moves the excavation cost more than any window choice does.
What makes it an egress window at all
An egress window is a code item before it is a product: a window large enough and low enough for a person to escape through and for a firefighter to enter. That is why it comes up at all, usually when a basement is being made into a bedroom.
Our note, marked as ours. We have not reproduced specific opening dimensions here, because neither of our two sources states the full requirement and local adoption of the code varies. The size your jurisdiction requires is a question for your building department, and it is worth settling before you price anything, because it determines the window, and the window determines the well, and the well is most of the money.
How it compares with an ordinary window
Against the figures on our window replacement page, an egress window is several times the cost of a standard replacement, and almost none of that difference is the glass.
Our reading. That makes it one of the few window jobs where shopping the unit is close to pointless and shopping the groundwork is the whole exercise. Get the excavation, the well and the drainage itemised separately on every quote. Two quotes that differ by a thousand dollars usually differ in how much digging each one assumes, not in the window.
What to take from this
- Budget $3,500 to $4,129 as the working average, from two sources that agree closely.
- The window is $100 to $700. The rest is excavation, the well and labor.
- Above ground is cheaper than a basement, on Fixr's own statement, if you have a choice of location.
- Ask what an inward-opening unit does to the well size. It can shrink the biggest cost on the job.
- Settle the required opening size with your building department first. It drives everything downstream.
- The other windows priced mostly by their building work are the bay, on our bay window page, and the skylight, on our skylight page.
Sources
- Fixr, Cost to Install an Egress Window, updated August 29, 2025 (the $2,500 to $5,000 range and $3,500 national average, the note that below-ground installation requires excavation and a window well, the International Building Code requirement on well dimensions, and the statement that above-ground installation costs less)
- Bob Vila, How Much Does an Egress Window Cost to Install?, updated January 21, 2024 (the $2,621 to $5,662 range and $4,129 national average, the separate figures for the window unit and for fitting it, and the hourly and per-window labor figures)
Price figures are national US ranges from the sources above as of the date shown. Your local price depends on labor rates, permits and site conditions. Read how we get our numbers.