A growing family, a parent moving in, or a guest room you finally have space for — adding a bedroom is one of the most direct ways to make a house work better. Sun Shore Construction builds bedroom additions across Greater Boston, with or without a new bathroom. Plans are drawn by a licensed architect or designer (you are welcome to bring your own); we build to those plans and handle the permitting. Licensed and fully insured; proof available on request.

Ways to add a bedroom

• Ground-floor bedroom addition — built out from the side or back of the house; useful when someone in the family should not have to use stairs.
• Bedroom addition with a bathroom — the most practical version: a bedroom plus its own bath, so the new room does not depend on the hallway bathroom.
• Bedroom over a garage or on a second story — see our second-story additions and garage additions.
• Bedroom in a finished basement — if your basement can meet egress and ceiling-height requirements, it can be the lowest-cost way to add a bedroom. See basement finishing.

Will my town allow it? Zoning comes first

Before anything is drawn, we check the rules that decide what you can build on your lot: setbacks from your property lines, lot coverage, and height limits. If a design does not fit the zoning rules as written, some towns allow it with a special permit or variance from the town’s zoning board. That adds steps, so we tell you early.

Permits and inspections — we handle them

An addition needs a building permit, and the work is inspected at each stage. We pull the building permit and coordinate inspections with your town. Electrical and plumbing permits are pulled by the licensed electricians and plumbers we hire for your project — and because we manage the whole job, every permit is our responsibility, not yours.

What affects the cost of a bedroom addition?

We never quote a price sight-unseen. The main factors: the size of the room, foundation type, whether a bathroom is included and how far the plumbing has to run, heating and cooling for the new room, windows, and how the roofline ties into the house. After a site visit we give you a free written estimate, itemized so you can see what is included.

FAQ

Does a new bedroom need a window?

Yes. The building code requires every sleeping room to have at least one emergency escape opening — an egress window or door — so we plan for it from the start.

Should I add a bathroom with the bedroom?

If the new room is for an adult or an in-law, usually yes. For a guest room or child’s room, it depends on where the nearest bathroom is.

Do you handle the permits?

Yes — see above.

Serving Needham, Newton, Wellesley, Brookline, Dedham, Westwood, Dover, and nearby communities. Call (857) 858-2600 or request a free estimate. 中文服务 / Bilingual team.