Egress Window Installation in Fort Collins, Colorado

Fort Collins Egress Windows installs code-compliant basement egress windows across Fort Collins and Northern Colorado: concrete cutting, IRC R310-compliant windows, code-sized wells, and the drainage that keeps them dry on Front Range clay. A full install typically runs $3,800 to $7,000, the permit and the city-required engineer’s letter are handled for you, and every job starts with a free on-site measure and a flat quote.

If you are finishing a basement bedroom, selling a house where the “fourth bedroom” has no legal exit, or replacing a steel well that has heaved off the foundation and fills with water every spring, this is exactly the work we do, and nothing else. Egress is not a window swap. It is structural work: sawing through a foundation wall, framing the opening to an engineer’s letter, and building drainage that respects the soil under Fort Collins, which the Colorado Geological Survey maps as swelling and collapsing clay over the Pierre Shale.

What makes a window a legal egress window

The numbers come from IRC Section R310, which the 2024 edition renumbers as Section R319 without changing a figure. The City of Fort Collins applies the 2024 International Codes with local amendments to any permit filed on or after April 1, 2026, and the dimensions are the same ones the city has enforced since it adopted the 2021 edition in April 2022. To count as an emergency escape and rescue opening, a window must have:

• Net clear opening of at least 5.7 square feet (5.0 square feet is allowed for a grade-floor or below-grade opening)
• Minimum clear height of 24 inches
• Minimum clear width of 20 inches
• Sill no more than 44 inches above the floor

“Net clear opening” is the actual open hole a person can climb through, not the glass size and not the rough opening. A lot of windows sold as “egress-sized” only hit 5.7 square feet in specific configurations, which is why we size every unit against the real math before ordering.

When the window sits below grade, the code keeps going: the window well must have at least 9 square feet of horizontal area, minimum 36 inches of width and 36 inches of projection, and if the well is deeper than 44 inches it needs a permanently attached ladder or steps, rungs at least 12 inches wide, projecting 3 inches from the wall, spaced no more than 18 inches apart, and encroaching no more than 6 inches into the well. Fort Collins adds two requirements of its own that catch people: a new well has to be designed for drainage and connected to the foundation drain if the house has one, and it needs an unobstructed path to the sidewalk or street. Full details on the egress window installation page and the Fort Collins code reference.

The sentence the city puts in bold

The City of Fort Collins egress window guide says it plainly: installing an emergency escape and rescue window does not create a legal bedroom. A remodel permit or a basement finish permit is required to create or relocate a bedroom, and that permit carries its own rules: a minimum bedroom size of 70 square feet with no dimension under 7 feet, a 6-foot-8 ceiling, smoke alarms inside and outside the sleeping area, a carbon monoxide alarm within 15 feet of the bedroom door, and an escape opening in every bedroom.

That is why we sell the opening as part of a basement bedroom conversion rather than as a hole in a wall. The window is the expensive, structural part. The rest is coordination, and skipping it is how a “bedroom” ends up back on the listing as a “finished room.”

Why Fort Collins basements drive this work

The housing stock spans five egress eras. The city publishes a chart of what its own code required at the time each house was built. Homes permitted between November 1966 and November 1977 needed only a 5-square-foot opening with a 48-inch sill. From December 1977 the 5.7-square-foot, 24 by 20 inch, 44-inch-sill standard arrived, but the 36-inch well with a ladder was not required until May 1998. The city treats a window built to the code of its day as compliant, so a 1970s room can be a legal bedroom with a window that a buyer’s inspector will still call out as small. Where the room was finished later without a permit, or where you are creating a bedroom now, the current numbers apply. The failed inspection page walks through the chart with a tape measure.

Radon made basement finishing standard practice here. Larimer County is in EPA radon Zone 1, the band where the predicted average indoor level is above the 4 pCi/L action level, and the state health department says roughly half of Colorado homes test above it. The practical result: most finished basements in this market get a mitigation system, and once a basement is being finished into real living space, every sleeping room down there legally needs its own egress opening. We coordinate cleanly with mitigation work; the two projects do not conflict.

The rental market changed in 2024. Fort Collins repealed its “U plus 2” occupancy rule, the limit of three unrelated people per dwelling, effective July 12, 2024, after the state barred occupancy limits based on family relationship. What the state left in place are health and safety limits from the building and fire codes. With CSU at a record 34,412 students and most long-term rentals now required to register with the city each year, the number of legal bedrooms in a house near campus is decided by egress, not by a headcount. The city’s rental standards say every escape opening must meet the code in effect when the house was built or provide at least 720 square inches of net clear opening with a sill no higher than 48 inches. The student rental post covers what that means for a landlord.

Home sales force the issue. Appraisers working to Fannie Mae’s rules report below-grade rooms separately from the above-grade room count, and buyers’ inspectors measure basement windows. A “3-bedroom plus basement bedroom” listing gets knocked back the moment the report notes the missing egress, or the buyer negotiates the install off your price. If you are on a closing deadline, the basement bedroom conversion page explains the fastest version of this job we do.

The soil is hard on wells. The Colorado Geological Survey says expansive clay and bentonite underlie many of Colorado’s populated areas, can expand up to 20 percent by volume when wet, and can push with up to 30,000 pounds per square foot. A corrugated steel well anchored to a foundation in that soil gets shoved, and a well without a real gravel column becomes a bucket. Window well replacement and well covers and drainage are steady, year-in-year-out work in this town.

What we install

• Egress window installation: the full job: engineer’s letter, permit, excavation, concrete cut, framed opening, window, well, drainage, backfill, final inspection.
• Window well replacement: code-sized wells with anchored ladders and gravel drainage, for new openings or failed old wells.
• Basement window replacement: modern, efficient units in existing openings. No cutting, works year-round.
• Well covers and drainage: polycarbonate covers plus gravel columns and foundation-drain tie-ins that keep wells dry.
• Concrete cutting: diamond-blade foundation sawing for window and door openings, poured or block.
• Basement bedroom conversion: the opening plus the coordination that lets the room be permitted as a bedroom.
• Permits and inspections: Fort Collins, Larimer County, and each town run their own permitting, and Windsor and Greeley sit in Weld County. We file with the right office.

If you would rather start from the symptom, the problems pages take nine of them one at a time, and the calculators put a range on yours before you call.

What the job actually looks like

Here is the honest sequence, because a homeowner who knows the process gets a better result:

1. Engineer’s letter, permit, and layout. Fort Collins requires a letter or drawings stamped by a Colorado licensed engineer for any new or altered window in a foundation wall, so that comes first. We file the permit through the city’s Accela portal, request utility locates through Colorado 811, and mark the opening: checking footing depth, joist bearing, and any wiring or plumbing in the wall cavity.
2. Excavate. Typically 5 to 6 feet down outside the wall, below the new sill and deep enough for a real drainage column. Fort Collins’ frost depth is 30 inches; the dig respects it.
3. Cut the concrete. Diamond-blade wet sawing on poured walls; block walls come out course by course. This is the loud, dusty, skilled part of the job, and it is where cheap installs go wrong.
4. Frame the opening. The header the engineer specified, and a pressure-treated buck frame anchored to the concrete.
5. Set the window. Sized to beat 5.7 square feet net clear, at or under a U-factor of 0.28, shimmed, insulated, flashed, and sealed.
6. Install the well and drainage. Anchored to the foundation, gravel column tied to the foundation drain where the house has one, which the city requires, or a deep gravel dry well where it does not. On this clay, drainage is the difference between an egress window and a basement leak.
7. Backfill, grade, ladder, cover, final inspection. Backfill graded away from the house, a clear path to the street, the inspector signs off, and the bedroom permit can close.

Pricing, published

Most contractors make you sit through a sales visit to hear a number. Here are ours. Colorado labour runs higher than the upper Midwest and these ranges are adjusted for that.

Foundation type, dig depth, and access move the number. A newer poured wall on an open lot in Timnath digs different than a 1920s wall in the Laurel School district with an alley behind it. The pricing page breaks down every line, and the quote you get after the free on-site measure is flat.

The honest fine print

The permit and the final inspection belong to the city or the county, not to us. Nobody can guarantee a permit approval or promise a room “will pass,” and you should walk away from anyone who does. What we can say is that the work is built to IRC R310 and the Fort Collins amendments, the installer handles the engineer’s letter and the permit end to end, and the inspection is part of the job, not an extra. The crews are licensed with the city, which requires it of every contractor working here, and insured.

And the season is real: excavation runs roughly April through mid-November here. If you want a legal basement bedroom by spring, the smart move is to get measured, engineered, and permitted over the winter. Read more about how we work, check the full FAQ, or send the form for a free on-site measure: we cover Fort Collins plus Loveland, Windsor, Wellington, Timnath, Greeley, and Berthoud. If you landed here searching “egress window installation near me,” that list is your answer, and the concrete cutting and installs are performed by licensed, insured local contractors.