Egress Window Cost in Minnesota (2026): Install, Well, and Code

An egress window in Minnesota costs $4,500 to $9,000 installed, including cutting the foundation, the window, the well, the cover, and drainage. A simple install in a poured wall with easy exterior access can come in near $4,500; a block foundation, deep bury, or a hardscaped exterior pushes past $9,000.

You need one for every basement sleeping room, without exception. It is also the single item that turns a finished basement into a legal bedroom — and legal bedrooms are what appraisers count.

Minnesota egress code, exactly

Requirement	Minimum
Net clear opening	5.7 sq ft (5.0 sq ft allowed at grade level)
Clear opening height	24 inches
Clear opening width	20 inches
Sill height above finished floor	no more than 44 inches
Window well projection	36 inches from the wall
Window well area	9 sq ft minimum
Ladder/steps in well	Required if well is deeper than 44 inches
Operation	Openable from inside without keys, tools, or special knowledge

Note that "net clear opening" means the actual hole a person passes through with the sash fully open — not the rough opening and not the glass size. A window that satisfies width and height minimums can still fail the 5.7 sq ft area test. This trips up DIY buyers constantly.

Cost breakdown

Item	Cost
Permit	$150–$400
Excavation	$600–$1,800
Cutting the foundation (poured concrete)	$900–$2,200
Cutting block foundation + lintel	$1,200–$2,800
Egress window unit (casement or sliding)	$700–$2,200
Window well (steel, poly, or block)	$500–$2,000
Well cover	$250–$800
Drainage — gravel + tie to drain tile	$500–$1,500
Ladder/steps	$200–$600
Framing, trim, interior finish	$600–$1,800
Backfill and grade restoration	$400–$1,200

What drives your price up

• Block foundation instead of poured — requires a steel lintel and careful cutting.
• Deep bury. A window well more than 44 inches deep needs a ladder and more excavation.
• Utilities in the way — gas meter, electrical service, AC condenser, sewer cleanout.
• Hardscape — a patio, driveway, or retaining wall over the dig zone.
• Tight access — no way to get equipment to the wall means hand excavation.
• Winter installation — frozen ground adds $500–$1,500.

The detail that actually matters: drainage

A window well is a hole next to your foundation that collects water. If it is not drained, you will get water in your new bedroom — and it will be your fault, not the weather's.

Correct: a gravel base at least 6–8 inches deep, a vertical drain tied into the perimeter drain tile or sump system, and a well that extends above finished grade with soil sloped away from it. A cover keeps snow, leaves, and rain out.

Contractors who skip the drain tie-in save $500 and cost you a flooded basement. Ask specifically how the well drains.

Does it add value?

An egress window is the cheapest legal bedroom in real estate. In the Twin Cities:

• Cost: $4,500–$9,000
• Value added by converting an unfinished basement room into a legal 4th bedroom: typically $15,000–$35,000 on appraisal
• Rental value if you rent by the room: $650–$900 per month

It is one of the few home improvements where the return is not close.

Frequently asked questions

How much does an egress window cost in Minnesota? $4,500 to $9,000 installed, including foundation cutting, window, well, cover, and drainage.

Is an egress window required for a basement bedroom? Yes. Every basement sleeping room in Minnesota requires an emergency escape and rescue opening. Without one, the room cannot be listed or appraised as a bedroom.

Can I install an egress window myself? Cutting a structural foundation wall requires a permit and, in many cases, engineering. This is not a DIY project, and inspectors check it.

How long does installation take? One to three days for most installations, weather permitting.

Do I need one for a basement office or family room? Not for a non-sleeping room, though it is a good safety upgrade in any finished basement.

We install egress windows across the Twin Cities, permit and drainage included. If you are finishing a basement, do this first — it dictates the layout.