There's no single national definition, which is why this question generates so much argument. Three different standards get conflated, and they don't always agree about the same room. 1. The building code where the house sits. This is the only one with legal force, and it's local. Residential codes typically require a sleeping room to have an emergency escape and rescue opening - a window or door meeting minimum size and sill-height requirements - plus a minimum ceiling height over a minimum floor area, a heat source, and smoke alarm coverage. Note what is usually not required: a closet. That's the most persistent myth in real estate. Buyers expect a closet and its absence affects marketability, but in most jurisdictions code doesn't require one. 2. What an appraiser will count. Appraisers report what's typical and marketable for the local market, and square footage is measured under the ANSI standard, which separates above-grade from below-grade area. A finished basement room with a legal egress window is often still reported as a below-grade room rather than added to the above-grade bedroom count, however nicely it's finished. That distinction moves appraised value. 3. What the septic permit allows. On a property with an on-site system, the permit is rated for a specific number of bedrooms, and that number can cap what may lawfully be advertised regardless of how many rooms exist. Sellers who add a bedroom on a septic system without addressing the permit run into this at the worst possible moment. A fourth practical filter: access. A room you can only reach by walking through another bedroom generally isn't counted as a separate bedroom, and neither is a room whose only access is through a garage or an unfinished space. What to do with this if you're selling: count bedrooms the way an appraiser and the permit will, not the way you'd like to. Overstating the count is a disclosure problem, an appraisal problem, and occasionally a licensing complaint. If you've converted a space and never permitted it, say so and price it accordingly - bonus room, office, or flex space is accurate and still sells. If you're buying: ask which rooms the seller is counting and why, verify the escape opening with your own eyes, and if there's a septic system, ask for the permit. Your lender's appraiser will look at all of it eventually; better you look first. Because the code piece is local, verify the specifics with your municipal or county building department rather than relying on a general answer, including this one. Dustin Woodley, Camelot Properties, LLC - serving Montgomery, Prattville, Millbrook, Wetumpka, Pike Road, Auburn, Opelika, Lake Martin and the Tri County River Region area.


