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Find Addition to existing structure builders in Chelsea

Avatar for iCornerstone, Inc.
iCornerstone, Inc.
4.9(
48
)

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 time9 hrs
Response rate95%
Recommended by93%of homeowners
Avatar for MMP Construction Inc
MMP Construction Inc
4.7(
191
)

Serving Chelsea, MA and surrounding areas

Approved

In business since 2004

Free estimates

Emergency services offered

"When we started our plan of remodeling, the first thing we did was the complete roof replacement including kitchen vent & duct pipe installation to the roof, and new installation of attic ventilation. MMP did not only completed it just as agreed but also very efficiently. The crews were friendly, professional, and careful. The jobs were carefully managed and implemented effectively. I was impressed by Matt, who is the manager, and he does an outstanding job in managing the crews and the progress of the situation, and the communication was clear and always to the point. We then moved to initiate a search for a contractor of two bathrooms remodeling after completing the roof and attic vent, MMP was one of the many candidates. Matt has had not only the best idea and proposals but also shown an impressive & professional sense of evaluating the project accurately, including the possible structural modification as well as a competitive estimate of the cost of the build. His proposal included a rebuild of a wall of the bathroom to expand another one adjacent to it. Matt accepted to use my schematic design image (made with a software tool) and a spreadsheet list of the fixtures that I created - as many as fifty items including TOTO, Grohe, American Standard, Panasonic, and IKEA - to start the job (later changed some of them due to local plumbing code compliance) After beginning the bathroom remodel project, Matt shared what jobs will be done with us timely and efficiently via text so that we feel comfortable enough in knowing what is going on while living in the house of dust & noise from remodeling. The crews, Zen and Mark, were very courteous, extensively experienced, reliable, and friendly with excellent communication, sometimes with songs of 80s rock music. They ask me when more precise specifications are needed and notified me when they feel advance notifications are required. When a change is necessary due to inspection, they informed me and clarified what and why. I have never felt uncomfortable in living together with the remodel job which has lasted over four months. The completed two bathrooms were stunning, just as I imagined. Matt, Zen, and Mark have proved their strong & thoughtful expertise and lived up with my request patiently until completion. Great job. A home remodeling project cannot be successful without having a trusted partner, and my experience with MMP has led me to be glad to share my confidence that MMP has a credential to become your reliable partner to manage a construction project together."
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+154

1 neighbors recently requested a quote
Recommended by89%of homeowners
Avatar for SILMAC Construction Inc.
SILMAC Construction Inc.
4.9(
165
)

Serving Chelsea, MA and surrounding areas

Approved

Super Service Award Winner

In business since 2004

Free estimates

Warranties offered

"Joe and his team did an excellent job with our basement! Joe is very responsive, managed all parts of the project very well, including permitting, solving new issues that came up unexpectedly, responding to inspector needs, addressing our additions to the projects, and trying his best to meet all our timelines. Even if things got delayed in some parts, it was very helpful that Joe was always able to communicate and keep us posted on where things stand. The pricing was fair, and I could trust Joe to provide good advice on the right services and materials to use. I recommend Joe for any home project and would be happy to use Silmac services again."
Final
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+11

Response time2 days
3 neighbors recently requested a quote
Recommended by95%of homeowners
Avatar for Tejada's Remodeling Inc
Tejada's Remodeling Inc
5.0(
28
)

Serving Chelsea, MA and surrounding areas

Approved

Super Service Award Winner

In business since 2024

Free estimates

Warranties offered

"Highly recommended. Jose and Cesar were great. They were reliable and their work was excellent. They completely remodeled our condo including 4 bathrooms, floors, fireplace/hearth, etc. It was a big job and they worked with us to make sure everything came out exactly the way we wanted. The cost was very reasonable."
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+6

Response time1 day
8 neighbors recently requested a quote
Recommended by82%of homeowners
Avatar for D & R Construction
D & R Construction
4.7(
29
)

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"
8 neighbors recently requested a quote
Recommended by89%of homeowners
Avatar for Crystal Renovations LLC
Crystal Renovations LLC
5.0(
57
)

Serving Chelsea, MA and surrounding areas

Approved

In business since 2003

Free estimates

Emergency services offered

"Pedro Quissanga was wonderful throughout the process. The project started out as a porch window replacement with an architect drawing plans, but once we started construction, we discovered that the whole underneath part was rotting and needed reconstruction. Pedro and his crew were hard working, reliable and careful, and his price for all of the work was very reasonable. When something went awry late in the construction, Pedro took it seriously and got people over within hours to locate the issue and fix the problem. Even though the project ended up being much more difficult than initially expected, there were never any unexpected charges and the additional work was at a consistent high level. We recommend Crystal Renovations without reservation and have several neighbors using them now for small-to-medium sized projects."
Remodeling - General Project
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+10

Response time3 days
1 neighbors recently requested a quote
Recommended by94%of homeowners
Avatar for L2 Homes
L2 Homes
5.0(
10
)

Serving Chelsea, MA and surrounding areas

Approved

In business since 2000

Free estimates

Credit card accepted

"These guys did a fantastic job, very professional and clean. They were able to renovate both floors on my two family home within my budget and in a timely fashion. Handled everything from top to bottom, full clean out, gut bathrooms and kitchen, completely transformed the place. Couldn’t be happier with the finish product. Would recommend and hire again! "
Rubber Roof Install
Roof Replacement
Roof Replacement
Roof Replacement
Complete Home Renovation

+8

12 neighbors recently requested a quote
Avatar for RC Works
RC Works
4.9(
16
)

Serving Chelsea, MA and surrounding areas

Approved

In business since 2018

Free estimates

Warranties offered

"Andrey and his crew were incredible to work with. I wish I could submit before and after pictures because our bedroom looks incredible! Andrey was committed to a quality final product and had a vision for the room that came to fruition beautifully. While the project took longer than expected, it was absolutely worth every day of work they put into it. Andrey and his crew will hopefully perform every remodeling project we have. We couldn’t be happier with the project. They explained exactly what they would do and executed perfectly. Because they were so committed to the final product, Andrey even split the cost of moving some duct work with us because we were torn on whether to add cost to the project and he wanted us to have the best final product. 10/10 would recommend."
Finished 1
French drain all around the basement, 2 feet deep with perforated pipe and discharge drain well.
Basement waterproofing
Deck and retaining wall
Bathroom Renovation

+293

4 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for WS Builders Corp
WS Builders Corp
4.3(
62
)

Serving Chelsea, MA and surrounding areas

Approved

In business since 2010

Free estimates

Warranties offered

"These guys are the hardest working crew Ive ever seen. Showed up every day at 7am and stayed until 7-8pm every night! I cant say enough about their work ethic. Wladimir was great to work with right from the initial site visit, to the quote, and right up through the finished product. It takes a lot to impress me when it comes to projects. I have high expectations of how things are built and the final results. Id rather have quality work over saving a buck. I had multiple contractors out and narrowed them down and eventually chose WS Builders because of my interactions with Wlad right from the start. Very personable, great guy and listened to what I actually wanted and didnt just yes me to death. He knew exactly what I was expecting from the start and his guys blew away my expectations. We had been saving up for years for a new deck and Wlad and his crew were able to deliver. He offered different products and didnt try to push me towards the more expensive options and let me choose what I wanted. (we went with Trex but he gave us other options as well) He was always quick to respond whenever I had a question or wanted something changed because I wanted it to look a very specific way etc. He was here the day the materials were delivered to make sure they were put exactly where I wanted. He was very careful to make sure that my yard had the least amount of damage as I told him from the start that was one of my concerns. We now have an absolutely beautiful deck that will last longer than my home with the way it was constructed. I wanted it over built and they delivered. If I ever needed more work done in the future, Wlad would be the first guy I call. If you are looking for a great company to work with I highly recommend WS Builders!"
Addition
Basement renovation
Roof Renovation
KITCHEN REMODELING
2 and 3 Floor Addition

+75

Response time10 hrs
3 neighbors recently requested a quote
Recommended by82%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.