
Home/Home additions
Need more room but don't want to move? Jose builds room additions, bump-outs and in-law suites, and he runs the job himself from framing to finish.
SHT 01 Home additions
Moving costs a lot. Closing costs, a new mortgage, maybe a new school for the kids. For a lot of families, adding on makes more sense. You keep the house and the street you like, and you get the room you need.
Genesis Building Services builds home additions for homeowners in Fitchburg and across Central Massachusetts. Owner Jose Nieves quotes the job and runs it himself. The person you talk to on day one is the same person on the job at the end.
An addition is a big job. You want one person to call, a clear price up front, and someone who shows up. One Google review says he “showed up every day and got it done within the time frame they quoted me.”
Every addition in Massachusetts needs a building permit from your town. Ask Jose how that works for your job when he comes out for the free estimate.
A new bedroom, family room or office built onto the side or back of your house.
Push a wall out a few feet so a tight kitchen, bath or bedroom finally works.
Room for a parent or a grown kid to live on their own, under your roof.
A mudroom or new entry built on so the mess stops at the door.
SHT 02 The work
Every photo here is from a Genesis job, pulled from our Google profile. Nothing staged, nothing stock.




SHT 03 The proof
A few words from customers, copied straight from our Google reviews.
Loving our new dining-room sliding door! Jose was very meticulous and made sure everything turned out just right. It looks better than we imagined!★★★★★Marilyn HernandezGoogle review
The roof looks beautiful. I'm beyond pleased with his professionalism, cleanliness, communication skills and the pride he takes in his work.★★★★★Maryanne HardyGoogle review
They did 2 jobs for me, showed up every day and got it done within the time frame they quoted me. Their pricing was very reasonable and both jobs came out great.★★★★★Eric ResnikGoogle review
SHT 04 How it works
(857) 772-1601 rings the owner, not an office. Tell him what you're thinking about.
He comes out, looks at it with you, and gives you a straight price. The estimate is free.
The same person who quoted it does the work, and the site gets left clean.
SHT 05 Where we work
It depends on the size, what goes inside it, and your house. A bump-out and a full room addition are very different jobs. Jose comes out, looks at it with you, and gives you a straight price. The estimate is free.
Yes. In Massachusetts an addition needs a building permit from your town. Talk it through with Jose at the estimate so you know what to expect before anything gets built.
Jose Nieves, the owner, runs the job from framing to finish. The person who quotes it is the person building it.
Fitchburg first, plus Leominster, Lunenburg, Westminster, Gardner, Shrewsbury, Worcester and nearby towns.
SHT 06 Other jobs we do
SHT 07 Talk to Jose
The fastest way is a phone call.
(857) 772-1601Hours
Mon 7–5 · Tue–Fri 8–5
Sat 8–2 · Sun closed
Rather get a callback?
Tell us about the job and Jose calls you back during work hours. The estimate is free.
Request a callback