What Legally Counts as a Bedroom in Minnesota (2026)

Before you add a bedroom, list one, or rent one out, it has to actually be a bedroom. In Minnesota that is a code question, not a marketing question — and the answer is more specific than most homeowners expect.

The five things a legal sleeping room needs

Minnesota's residential code follows the IRC. A room used for sleeping generally needs all of the following.

Requirement	What it means in practice
Emergency escape and rescue opening	A window or door opening directly outside. Typically 5.7 sq ft net clear (5.0 sq ft at grade), 24 in minimum clear height, 20 in minimum clear width, sill no more than 44 in above the finished floor, openable from inside without a key or tool
Ceiling height	7 feet over the required floor area
Floor area	At least 70 sq ft, with no horizontal dimension under 7 feet
Heat	A permanent heat source capable of maintaining 68°F
Smoke and CO alarms	Interconnected smoke alarm inside the room; CO alarm within 10 feet of the sleeping area

Your city's building official has the final say, and a few metro cities layer on rental-license requirements on top of the state code. We confirm with the inspector before framing.

The closet myth

Minnesota code does not require a closet. This surprises people because "no closet, not a bedroom" gets repeated constantly. Where it comes from is real estate practice, not the code book: appraisers and MLS conventions expect a closet, and renters shop for one. So while a closet is not legally required, we build one on nearly every conversion — it costs a few hundred dollars and it is the difference between a room that shows as a bedroom and a room that shows as a "flex space".

The one that fails inspections: egress

Ceiling height and floor area are usually a yes or no you can measure in five minutes. Heat is a duct run. The requirement that actually stops projects is the escape opening — especially in basements, where the existing hopper window is nowhere near 5.7 square feet.

Cutting a new egress window into a block or poured foundation, setting a well with real drainage, and getting it inspected typically runs $4,500 – $10,000 in the Twin Cities. Read the full breakdown in our egress window cost guide.

What a conversion costs

Planning ranges for Twin Cities work, not quotes:

Conversion	Typical range
Dining room or den with existing egress	$3,500 – $9,000
Splitting one oversized room into two	$6,000 – $14,000
Basement bedroom including egress window	$14,000 – $28,000
Garage conversion to bedroom	$24,000 – $42,000

Why the permit matters more than the paint

An unpermitted bedroom is a problem three times: when a buyer's appraiser refuses to count it, when a rental inspector flags it, and when an insurer looks for reasons to argue about a claim. Permits on this kind of work are not expensive and the inspections are routine. Do it once, correctly, and the square footage is yours to keep.

Next step

Not sure whether your space can be a legal bedroom? Send us the room dimensions, ceiling height, and a photo of the window — we will tell you straight, before you spend anything.