Legal Basement Bedrooms
What it takes to legalize a basement bedroom in Denver.
A bedroom in a Denver basement isn't a bedroom until it meets emergency escape, light, ventilation, ceiling height, and smoke alarm requirements. Here's what each one means.
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Experts - Code-Compliant
Installations - Basement Bedroom
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Denver Crew - Financing
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"Legal basement bedroom" is one of the most-searched terms in Denver real estate — and one of the most misunderstood. Whether you're a homeowner trying to add resale value, a Realtor preparing to list, or an investor finishing a rental, the rules are the same and they come from the IRC code adopted by the City of Denver.
The five requirements
- Emergency escape and rescue opening. 5.7 sq ft net clear opening, at least 24" tall × 20" wide, sill ≤ 44" off the finished floor. This is the egress window. See our egress window page →
- Natural light. Glazed area equal to at least 8% of the floor area of the room. The egress window almost always satisfies this on its own.
- Ventilation. Openable window area equal to at least 4% of the room's floor area. A code-sized casement egress window meets this.
- Ceiling height. Minimum 7 feet of finished ceiling height across the habitable area, with limited allowances for soffits and beams.
- Smoke and CO alarms. Hard-wired, interconnected smoke alarms in the bedroom and outside the sleeping area, plus a carbon monoxide alarm within 15 feet of the bedroom door.
What's optional
Despite popular belief, a closet is not a code requirement for a legal bedroom in most Colorado jurisdictions — but it is an appraisal expectation. If you want the room to count for resale value, plan on a closet too.
Where to start
For 90% of Denver basements we look at, the only missing piece is the egress window. The room already has the height, the room already has the smoke alarm, and adding the window unlocks the legal designation in one project. Read our Denver egress code requirements guide for the full code citations, or get a free assessment.
From there, the install itself is what we do every day — see our egress window installation page for the full scope, or read about the code-compliant window well that pairs with it.
FAQ
Legal basement bedroom questions.
No. The MLS, appraisers, and the City of Denver will not recognize a sleeping room without a code-compliant emergency escape and rescue opening. The room must be marketed as bonus space until egress is added.
Call or text us — and turn your dark basement into a bright, legal bedroom.
Pick up the phone or text photos of your basement wall and exterior — we'll tell you exactly what it takes to make the room code-compliant, daylit, and safe. No forms, no pressure, no sales pitch.
Or schedule a basement assessment