
Basement Egress Windows in Eastham, MA
Mussato Building Group installs basement egress windows in Eastham, MA. We are a family-owned general contractor founded in 2004, with more than 100 projects completed and a 5.0 rating from 21 Google reviews. Our base in South Yarmouth is about 19 miles away, and we work across Eastham and North Eastham.
- Family-owned since 2004
- Licensed + insured in MA
- 100+ projects completed
- 5.0 stars from 21 Google reviews
- BBB accredited
Egress windows in Eastham
Eastham is the gateway to the Outer Cape and home to the Salt Pond Visitor Center of the Cape Cod National Seashore.
An egress window is usually what makes a basement bedroom legal. Eastham homes are on septic systems, so a new bedroom always starts with the septic design. On septic, the new bedroom also needs the Eastham Board of Health to confirm the system can carry it under Title 5, so we check that before we cut the foundation.
Near the bay, Nauset Marsh, and the ocean, groundwater and heavy rain are the main risks for a new window well. We build the drainage at the bottom of the well and grade the soil around it so water moves away from the opening.

“I’ve worked with Joe and his team on several projects and the workmanship is consistently excellent. Their attention to detail and the ease of communication is second to none. Highly recommended.”
Egress window permits in Eastham
We prepare the drawings, file the applications, and schedule the inspections. Here is what a project like this usually needs:
- Building permit from the Eastham Building Department for the foundation cut and the new opening.
- Review by the Eastham Board of Health under Title 5 if the window is for a new bedroom on a septic system.
- Flood-zone review if the house sits in a FEMA flood zone.
- Code check of the opening, sill height, and well
- Foundation cut for the new opening
- Egress window set, flashed, and sealed
- Window well with ladder or steps where needed
- Drainage at the bottom of the well
- Interior framing, insulation, and trim around the window
- Replacement of small basement windows
- Building permit and inspection
Basement Egress Windows in Eastham: FAQ
Do I need a permit for an egress window in Eastham?
Yes. Cutting a foundation wall is structural work, so the Eastham Building Department issues a building permit and inspects the opening. We handle it.
Do you install egress windows in Eastham and North Eastham?
Yes. We install basement egress windows all over Eastham, including Eastham and North Eastham. Our base in South Yarmouth is about 19 miles away.
What size does the egress window need to be?
At least 5.7 square feet of clear opening, at least 24 inches of clear height and 20 inches of clear width, with the sill no more than 44 inches above the floor.
Does a basement bedroom in Eastham need anything else?
Enough ceiling height, and septic or sewer capacity for the extra bedroom. Eastham homes are on septic systems, so a new bedroom always starts with the septic design.
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