Louisville Basement Bedroom Egress Requirements

Does a basement bedroom need an egress window in Kentucky?

Yes. Every sleeping room needs an emergency escape and rescue opening, and a basement bedroom is a sleeping room. This applies whether you pull a permit or not, and it is the most common reason a Louisville basement finish fails inspection.

A finished basement with no bedroom in it generally does not need one. The requirement attaches to sleeping rooms, so a family room, an office or a play space is a different conversation.

Worth knowing that a room without compliant egress cannot be listed as a bedroom when you sell. An appraiser will not count it, and that changes what the finished space is worth.

What size does a basement egress window have to be?

Four numbers have to be met at once, and this is where people come unstuck.

The net clear opening has to be at least 5.7 square feet. That relaxes to 5.0 square feet when the sill is at or below grade, which covers most basement installations. The opening has to be at least 20 inches wide and at least 24 inches high. The sill can be no more than 44 inches above the finished floor.

The catch is that 20 inches by 24 inches works out to 3.3 square feet, which is well under the minimum. Hitting both dimensional minimums does not get you there. One of them has to be considerably larger.

Net clear opening also means the actual hole a person can climb through with the sash fully open, not the size of the window unit. A casement gives you nearly the whole frame. A single-hung only gives you the bottom half, so it has to be much bigger to qualify.

How high can the sill be?

Forty-four inches from the finished floor. That is measured after your flooring goes in, so a subfloor system and a finished floor eating an inch and a half of height moves the sill closer to the limit rather than further from it.

Does the window need a well?

If the opening is below grade, yes. The well has to project at least 36 inches from the foundation, and it has to be at least as wide as the window opening.

Any well deeper than 44 inches needs a permanent ladder or steps, with the lowest rung no more than 18 inches above the bottom. A ladder can stick into the required well space by a maximum of 6 inches.

Wells also need drainage. Without it the well collects rain and holds it against the foundation and the window you just installed.

How much does it cost to add an egress window?

Nationally a professionally installed basement egress window runs around $2,700 to $5,900, with most projects landing near $3,850 to $4,200. Retrofits that involve cutting concrete and excavating a new well sit at the higher end, often $4,000 to $8,000.

That is real money, and it is usually recovered. Converting a basement room into a legal bedroom typically adds considerably more to an appraisal than the window cost.

Do you need a permit for an egress window in Louisville?

Yes. Cutting an opening in a foundation wall is structural work and it goes through Louisville Metro Construction Review. Anyone offering to do it without a permit is offering you a problem at resale.

We cover the permit process more broadly in Louisville basement finishing permits.

What a walkout changes

If your lot slopes, a door to grade satisfies the escape requirement on its own and no window is needed. It also makes the space far more usable. Whether it is possible comes down to your grade, covered in walkout basement door installation.

Getting it done

The opening gets cut before the wall around it is framed, so this happens early in a project alongside basement framing. The window and wall work is egress window installation in Louisville, and the outside half is egress window wells and covers.

We do this across the metro, including basement remodeling in the Highlands, where cutting into stone foundations needs more care.

Call and we will tell you whether your wall and your grade will take one, or get a free written estimate.