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Find Addition to existing structure builders in Chelsea

Avatar for D & R Construction
D & R Construction
4.7(
31
)
Addition to Existing Structure - Build

Serving Chelsea, MA and surrounding areas

Approved

In business since 2011

Free estimates

Emergency services offered

"Eric and co are the best - attentive, listen, give their professional advice, and just do a great job. The project went really well - repaired water and bug damage and fixed what was originally done in a not so great manner. Our third successful project w/ Eric and team. Very pleased"
Response time4 days
Response rate100%
8 neighbors recently requested a quote
Avatar for iCornerstone, Inc.
iCornerstone, Inc.
4.9(
58
)
Addition to Existing Structure - Build

Serving Chelsea, MA and surrounding areas

Approved

In business since 1988

Customers say: True professional

"My wife and I were looking to have an addition built on our 2 bedroom / 1 bath home back in the winter of 2022. After a phone conversation with Richard, we decided to have him come out to the house. He was very clear with the iCornerstone process, and the benefits of using this process. He is meticulous in measuring and understanding the existing structure. There are no guesstimates and all cost projections are based on the actual materials and labor needed to complete the work. Having such clarity regarding costs before any work begins is not something I've seen in this industry prior to this experience. It was certainly a welcome change. We now have plans for a home addition and complete control over the project. We decide the scope and can customize the plan to our budget. We are grateful to have worked with Richard, and highly recommend him!"
Entertainment center
Entertainment center
Architectural details
computer room left
computer room right

+11

Response time8 hrs
Response rate100%
Recommended by91%of homeowners
Avatar for MMP Construction Inc
MMP Construction Inc
4.6(
222
)
Addition to Existing Structure - Build

Serving Chelsea, MA and surrounding areas

Approved

In business since 2004

Free estimates

Emergency services offered

"We had a very small roof area need to be repaired. I sent request to multiple company to give a service quote. Few of them sent me replies and stated that they are too busy to come. Matt of MMP Consturction's contacted me promptly, scheduled an on-site visit and gave us a quote right away. The work was then scheduled and finished quickly. Matt did great job on reaching out, effective communication, and always arriving on-time. He also gave an evaluation on our roof condition. Also, Eric and Don did excellent job on finishing the project. They are all very polite, knowledgeable, and showed their professionalism. We would like to express our sincere appreciation to Matt and his crew. We are very grateful for having them arriving on-time before the winter storm to prevent potential damage of the house. From their react, we see a warm heart. No job is big or small, all jobs are equally important. Understanding the difficulties of others, for the people, been appreciated by the people. Thank you again for your high quality service. We definitively recommend MMP Construction Inc. to anyone for any related home project."
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+154

1 neighbors recently requested a quote
Recommended by89%of homeowners
Avatar for SILMAC Construction Inc.
SILMAC Construction Inc.
4.8(
215
)
Addition to Existing Structure - Build

Serving Chelsea, MA and surrounding areas

Approved

Super Service Award Winner

In business since 2004

Free estimates

Warranties offered

"Joe and his team are truly amazing to work with and their product is even better. I am an architect and have worked with Joe on several projects. I am always really happy to see their results, Joe makes sure to take care of everything so that it is done professionally, up to all building and code standards, and that it looks spectacular in the end. It's hard to find a GC that cares and is willing to go the extra mile for their client. Joe is someone I trust completely to get it done well and to listen to the clients need. I recommend him 100%"
Final
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+11

Response time6 hrs
2 neighbors recently requested a quote
Recommended by95%of homeowners
Avatar for Crystal Renovations LLC
Crystal Renovations LLC
4.9(
64
)
Addition to Existing Structure - Build

Serving Chelsea, MA and surrounding areas

Approved

In business since 2003

Free estimates

Emergency services offered

"Pedro and his team were excellent. They were professional and timely, hard-working and meticulous, and trustworthy. Best of all (at least for me), is that Pedro is VERY responsive and his team is assigned to get your job done and done correctly. They show up on time every day, and were willing to work late into the evening to hit the project milestones. Pedro was 100% clear about the costs, and he made sure I fully understood the areas where the costs were not known or where the costs could possibly change. For example, he said, "If you open up this wall, I'm not sure what we are going to find." I told him to proceed and his team opened up that wall and found that the previous contractor had installed literally zero insulation. Pedro met with me, reviewed what his team had found, went over all of our options, gave me his recommendation, and only proceeded when I completely approved the additional work that would be done and the additional cost entailed. Pedro is a true partner and his team does great work. I cannot recommend them enough. My wife and I have already booked them for another job renovating a first floor porch and creating a roof over the open-air second floor porch."
Remodeling - General Project
Additional Photos
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+10

Response time3 days
1 neighbors recently requested a quote
Recommended by94%of homeowners
Mavridis Contracting Services
5.0(
15
)
Addition to Existing Structure - Build

Serving Chelsea, MA and surrounding areas

Approved

In business since 1998

Free estimates

Warranties offered

"Our house is 50+ years old and had the original casement windows, which were starting to fail. In addition, the exterior of our house need to be painted and there were a great deal of shingles or trim that was rotted and needed to be replaced. George and his team did an outstanding job, kept us informed as they went along and completed everything on time and on budget. We couldn't be happier with how the house looks. I would highly recommend Mavridis Contratcing to anyone looking for a contractor."
Condo Reno
Condo Reno
Condo Reno
Condo Reno
Condo Reno

+73

Recommended by100%of homeowners
Avatar for Tejada's Remodeling Inc
Tejada's Remodeling Inc
4.7(
31
)
Addition to Existing Structure - Build

Serving Chelsea, MA and surrounding areas

Approved

Super Service Award Winner

In business since 2024

Free estimates

Warranties offered

"These guys did a remarkable job. They put in a full days work to make a pool deck that had long been neglected look like new again! I highly recommend them to anyone that needs power washing. They did not miss a spot! Really nice guys, hard workers, very respectful!"
Additional Photos
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+6

Response time2 days
Response rate100%
12 neighbors recently requested a quote
Avatar for WS Builders Corp
WS Builders Corp
4.1(
69
)
Addition to Existing Structure - Build

Serving Chelsea, MA and surrounding areas

Approved

In business since 2010

Free estimates

Warranties offered

"WS Builders did an addition to my home and I couldn?t be happier with the results. The team was fast, very professional, and the quality of the work was excellent. They paid attention to every detail and made the whole process smooth. My house looks absolutely beautiful now. I highly recommend WS Builders Corp!"
Addition
Basement renovation
Roof Renovation
KITCHEN REMODELING
2 and 3 Floor Addition

+75

Response time10 hrs
2 neighbors recently requested a quote
Recommended by82%of homeowners
Avatar for C P Construction and Carpentry
C P Construction and Carpentry
4.1(
47
)
Addition to Existing Structure - Build

Serving Chelsea, MA and surrounding areas

Approved

In business since 2000

Free estimates

Emergency services offered

"CP construction and carpenrty did a great job building a new deck for my family. I was kept in the loop during the building process. Most importantly the price was right and great workmanship. I will use CP construction again and I highly recommend. Thanks again guys, from Nigel."
close up view of tile job on shower
remodel a bathroom
remodel a bathroom
remodel a bathroom
bathroom

+20

Response time2 days
2 neighbors recently requested a quote
Recommended by94%of homeowners
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FAQs for addition to existing structure building service projects in Chelsea, MA

You can typically raise your roof by four to eight feet, depending on your home's structure and roof design. The exact amount depends on factors like roof slope and framing support. Raising the roof creates additional interior space, enhances natural light, and increases your home's value. Consult a professional to determine the feasible height increase for your home.

Yes, you need a building permit to raise your roof. Obtaining a building permit ensures your project complies with local building codes and safety regulations. A professional contractor can assist with the permit and inspection process and ensure all legal and safety requirements are met. Your contractor will be familiar with building codes in your area, which can differ between cities or states.

While it's possible to raise a flat roof, it requires extensive structural modifications. Flat roofs lack the attic space and support structures of pitched roofs, so raising them involves significant engineering to ensure safety and durability. This process can be complex and costly, so professional assessment is essential before undertaking a project of this magnitude.

The Chelsea, MA homeowners’ guide to addition to existing structure building services

From average costs to expert advice, get all the answers you need to get your job done.