When gable dormers make sense
- Adding light and headroom to an existing upstairs bedroom
- Creating a code-compliant egress window for a bedroom
- Improving curb appeal on the front of a Cape
- Pairing with a rear shed dormer for space in back and style in front
What's included
Framing, structural header, roofing and flashing tied into your existing roof, siding and trim, the window, and interior finishing around the new opening.
Typical cost
Gable dormers typically run $15,000 to $30,000 each, depending on size, window, and interior finish.
Use the dormer cost calculator →
Questions about gable dormers
Will a new dormer match my existing roof?
We match shingles as closely as possible. If your roof is near the end of its life, it's usually smarter to re-roof the whole house at the same time.