Egress window installation in Denver.

An egress window is the single most valuable upgrade you can make to a Denver basement. It transforms an illegal "bonus room" into a legal bedroom, floods the floor plane with daylight, and gives your family a real second exit in the event of a fire.

But it is also the most consequential cut in your house. Denver foundations are doing real structural work — holding back expansive clay soil, resisting freeze-thaw movement, and supporting the framing above. The cut has to be the right size, in the right location, with the right header detail, properly waterproofed, and tied to a drainage system designed for our climate. That's why homeowners across the metro call Egress Denver for a code-compliant install the first time.

What's included in a Denver egress window install

• Engineering review of foundation type, span, and header requirements
• City of Denver (or local jurisdiction) building permit
• Utility locates and protection of landscaping
• Mini-excavator excavation of the well opening
• Diamond saw cut through poured concrete or block foundation
• Code-sized casement egress window (Andersen, Marvin, or equivalent)
• Galvanized steel or composite window well, anchored to foundation
• Engineered gravel drainage base tied to perimeter drain or daylight
• Interior trim, exterior flashing, and full backfill
• Final inspection with the city

Why Denver homeowners choose us

We've seen the cheap version. Hand-dug wells with no drainage. Headers spanned with framing lumber. Windows sized to "almost" hit code. Five years later, the well floods, the inspector flags the bedroom, and the homeowner pays twice. Our crews build the install you'd want in your own house — engineered, drained, and inspected.

Egress windows pair tightly with our other services. If the existing well is the failure point, see window well replacement. If you'd rather have a full second exit, our basement door installations are the upgrade. And if you're trying to legalize a basement bedroom, start with the legal basement bedroom guide.

Built for Denver basements

Most of the egress retrofits we install are in Denver's mid-century basement belt — 1950s ranches in Wheat Ridge and Lakewood (80214, 80215, 80226), brick bungalows in Park Hill (80207) and Berkeley (80212), Tudor-era homes in Wash Park (80209, 80210), and split-levels in Englewood and Centennial. Almost every one of those homes was built before egress was code, which is why adding a code-sized opening is the most common path to a legal bedroom in those zip codes.

The Denver build environment is also what makes the install non-trivial. Expansive clay soil swells against the foundation. Snow melt arrives fast in March and April. Freeze-thaw cycles work joints loose. We engineer every well and drainage detail for those conditions — not for an east-coast climate the window manufacturer assumed.

Emergency escape, code, and the IRC R310 rule

The egress window requirement is a fire safety rule, not paperwork. Smoke fills a basement stairwell in under two minutes — without a second exit, occupants in basement bedrooms have nowhere to go. The IRC's R310 emergency escape and rescue opening rule (adopted across Colorado) is what makes a basement bedroom legal and safe at the same time. Our Denver egress code guide covers the full requirement.

Natural light & home value

Beyond the code argument, the visual change is the reason most homeowners do it. A code-sized casement window with a deep well delivers 4–6× more light at the floor plane than a standard hopper basement window. Denver appraisers consistently add $15,000–$40,000 in value once a basement bedroom is legal — and the room finally feels like part of the house.

Egress window types we install

Window features that matter in Denver

Beyond hitting the 5.7 sq ft net clear opening, the features that actually matter on a Denver basement window are the ones that survive a freeze-thaw winter and let real daylight in. We spec Low-E insulated glazing on every install for energy efficiency, tempered glass at the low sill heights egress requires, insulated vinyl or fiberglass frames that don't conduct cold into a finished basement, and casement-style operation so the full opening counts toward both ventilation (4% of floor area) and natural light (8% of floor area) requirements for a legal basement bedroom.

Egress window replacement options

Most Denver replacement projects fall into one of three buckets. Like-for-like replacement swaps a failed casement for a new code-sized unit on an existing rough opening and well — the fastest, cleanest project we do. Upsize replacement takes an undersized hopper or slider and enlarges the rough opening to hit the 5.7 sq ft net clear minimum, usually paired with a new well. Full system replacement rebuilds the entire assembly — opening, window, well, and drainage — when the original install failed structurally or floods every spring. Egress Denver scopes which path applies during the free assessment.

Replacing old basement windows

The 1950s–1970s ranch and bungalow belt across Denver was built with small steel-frame hopper windows that were never intended as escape openings. Replacing old basement windows with a code-sized casement is the single highest-ROI upgrade we run on those homes — it brings the room into compliance, floods the floor plane with daylight, and stops the air and moisture leaks the original assembly has been losing for decades.

Upgrading non-code basement windows

If your basement has a window that's smaller than 24" tall or 20" wide, has a sill higher than 44" off the floor, or doesn't open with a single motion, it does not satisfy IRC R310 — and any sleeping room behind it is non-conforming. Upgrading non-code basement windows to a code-compliant egress assembly is what allows the room to legally count as a bedroom for appraisal, MLS listing, and insurance.

Basement window replacement for legal bedrooms

For homeowners specifically pursuing a legal basement bedroom, basement window replacement is almost always the first (and often only) construction step required. Once the egress is in, the rest of the bedroom requirements — ceiling height, smoke alarm, ventilation, and natural light — are typically already met. Pair the replacement with our legal basement bedroom guide to see the full checklist your room needs to pass.