Fort Collins Egress Windows Basement Bedroom Conversion in Fort Collins
A basement bedroom conversion is the whole path from an unfinished or unpermitted basement room to a bedroom the City of Fort Collins recognizes: the emergency escape and rescue opening, the basement finish permit, and the inspections that go with it. The egress portion, which is what we do, runs $3,800 to $7,500 per bedroom. The city’s own Emergency Escape and Rescue Windows guide says the thing most contractors leave out: installing an egress window does not create a legal bedroom. A remodel permit or a basement finish permit does. This page explains what that permit checks so you plan the room once.
What the city checks on a basement bedroom
From the City of Fort Collins Residential Basement Finish Guide, revised December 2025 to mark the 2024 code changes:
| Item | Requirement |
|---|---|
| Escape opening | An emergency escape and rescue opening is required in every bedroom |
| Opening size | 5.7 sq ft net clear (5.0 at or below grade), 24 in height, 20 in width, 44 in max sill |
| Window well | 36 in out from the window, 9 sq ft, ladder over 44 in deep, drained to the perimeter drain if present |
| Path out | Clear unobstructed path from the well to the street or alley; a gate in a fence is fine |
| Room size | 70 sq ft minimum, not less than 7 ft in width or length |
| Ceiling | 6 ft 8 in minimum for bedrooms, living areas, and hallways; 6 ft 4 in under ducts and beams and in showers, storage, and laundry |
| Smoke alarms | Inside the bedroom and outside sleeping areas, connected to the existing system if present |
| CO alarm | Within 15 feet of the bedroom, and inside any bedroom with a fuel-burning fireplace |
| Windows | U-factor 0.28 max, SHGC 0.35 max |
| Foundation walls | R-19 continuous, or R-13 plus R-5 continuous, or R-19 between studs, if uninsulated |
| Bottom plates | Pressure-treated where they meet concrete |
| Mechanical room | Not accessed through a bedroom or bathroom unless the door is solid, gasketed, self-closing, and combustion air is from outside, or the appliances are direct vent |
| Foundation openings | Engineered and stamped plans or letter for a new window in a foundation wall |
The city adds that floating walls are allowed but not required, which is the Front Range detail: on expansive clay, some builders isolate the bottom of a partition wall from a slab that may move.
The permit and the fee
Fort Collins charges a flat $155 for a basement finish permit with no plan check fee, and processes it as a fast-track permit. The submittal is a permit application with the square footage to be finished and to remain unfinished, plus a proposed floor plan. The egress window, labeled new or existing on the plan, needs the Colorado engineer’s stamped letter attached because it alters the foundation wall. Contractor license classes the city allows to finish basements are listed on the guide; homeowners doing their own work file the homeowner affidavit. We file through the city’s Accela Citizen Access portal and schedule every inspection: rough frame, electrical, plumbing, and mechanical, then insulation before drywall, then finals.
For addresses in unincorporated Larimer County, basement finishes are listed as permitted renovations under the 2024 codes the county adopted effective January 1, 2026, and the county takes residential permit applications on paper rather than through its online portal. Windsor requires a basement finish to be its own permit, and Greeley, the Weld County seat, still permits under the 2021 IRC. The egress numbers are the ones everyone calls IRC R310; the 2024 edition renumbers the same requirements as Section R319, and inspectors and older guides still call it R310. The permits page covers each office.
What we do, and what we do not
We do the opening. Engineer’s letter, the egress permit line, excavation, the cut, header and buck, the window, the well with ladder and drainage, backfill, and the egress inspection. Full detail on the egress window installation page. If the existing window is close, an enlargement at $2,800 to $5,000 may do it; Fort Collins has required today’s window dimensions since December 1977, so many 1980s and 1990s basements need a sill drop or a well, not a new hole.
We coordinate with the finish. Cut the opening first. It is the messiest step, and the drywallers will thank you. If you already have a finish contractor, we work to their plan; if you do not, we tell you honestly what the rest of the checklist means for your room.
We do not frame and drywall the room. That is a different trade, and a good one will tell you the same thing about egress.
Why Fort Collins basements get finished
Radon. The EPA puts Larimer County in radon Zone 1, and the state health department reports that about half of Colorado homes test above the 4 pCi/L action level. Most basement finishes here include mitigation, and mitigation and egress do not conflict. Sequence both before drywall.
Rentals. Fort Collins removed its three-unrelated-person occupancy limit effective July 12, 2024, after state law barred occupancy limits based on familial relationship, and since January 1, 2025 most long-term rentals must register with the city and self-certify to the property maintenance code. With CSU enrollment at 34,412, a legal basement bedroom in a rental near campus is a real asset, and an unpermitted one is a liability. The student-rental post goes deeper.
Resale. Under the Fannie Mae Selling Guide, finished rooms below grade are reported separately from above-grade room count and valued on their own line. The egress opening is what lets the room be listed as a bedroom at all. Inspectors measure these windows, and the failed inspection page is what happens when they do not pass.
Pricing
| Scope | Typical range |
|---|---|
| Egress opening per bedroom, new cut | $3,800 to $7,000 |
| Egress opening, deep dig or tight access | $7,000 to $7,500+ |
| Enlarge an existing opening instead | $2,800 to $5,000 |
| Second opening, same visit | Meaningfully less |
| Engineer’s letter | $300 to $700 at cost |
| City basement finish permit | $155 flat, at cost |
Matches the pricing page. These ranges run above the upper Midwest because Colorado labor costs more and the engineering and drainage are mandatory here.
The honest fine print
The permit and inspections belong to the city. We build to the code the city adopted, file the paperwork, and meet the inspector, and nobody can promise the outcome. Send the form with a rough sketch of the room and a photo of the wall where the window would go. Free on-site measure, flat quote, across Fort Collins, Loveland, Wellington, and Timnath.
Frequently Asked Questions
What makes a basement room a legal bedroom in Fort Collins?
A basement finish or remodel permit, with an emergency escape and rescue opening in the room. The city's guide is explicit that the egress window alone does not create a legal bedroom. The permit also checks a 6 foot 8 inch minimum ceiling, a 70 square foot minimum room at least 7 feet in each direction, smoke alarms inside and outside sleeping areas, a carbon monoxide alarm within 15 feet, insulation, and electrical protection.
What does the egress portion cost?
$3,800 to $7,500 per bedroom for the opening: engineer's letter, permit, cut, window, well, drainage, and inspection. Two bedrooms in one mobilization price meaningfully better than two separate jobs. The rest of the finish (framing, drywall, electrical) is separate and depends entirely on your plan.
What is the basement finish permit fee?
The City of Fort Collins charges a flat $155 for a basement finish permit with no plan check fee, and runs it as a fast-track permit. A new foundation opening for the egress window rides on the same permit with the engineer's letter attached.
Will the room count as a bedroom when I sell?
Fannie Mae's Selling Guide reports below-grade rooms separately from above-grade room count regardless of finish, and values them on their own line. A compliant egress opening is what lets the room be presented and valued as a bedroom at all; the appraiser's number is the appraiser's, and nobody honest guarantees it.
The previous owner finished the basement without a permit. Can it be fixed?
Yes. The city's basement finish guide says that if you purchased a property with unpermitted work, they are happy to work with you to permit and bring the space into compliance without fines. The egress opening is usually the biggest missing piece, and we handle that part.