A typical layout
A rear shed dormer across a 26 to 32 foot Cape can usually hold a primary bedroom, a walk-in or wall closet, a full bath with a walk-in shower, and often a second bedroom or office. We sketch options at the first visit.
Plumbing upstairs
We locate the new bathroom over or near the existing first-floor plumbing whenever possible to keep costs down.
Typical cost
A dormer designed around a primary suite typically runs $100,000 to $160,000 finished, including the bathroom.
Use the dormer cost calculator →
Questions about primary suites upstairs
Can the downstairs bedrooms stay?
Yes. Many families keep the first-floor bedrooms for kids or guests, or turn one into a den or office.