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Find Basement remodelers in Chelsea

Avatar for SILMAC Construction Inc.
SILMAC Construction Inc.
4.9(
165
)

Serving Chelsea, MA and surrounding areas

Angi Approved

Super Service Award Winner

In business since 2004

Free estimates

Warranties offered

"Joe and his team did an incredible job, the work was excellent and I appreciated the workmanship and the creative trouble-shooting (it's an old house!) to get excellent results. Everyone on his team was great: skilled, hard-working, friendly, and kind/respectful. Pricing was very reasonable and allowed me to upgrade items like appliances without sacrificing the scope of the remodel, quality, or workmanship. My house is transformed and I could not be happier with the results."
Final
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+11

Response time2 days
3 neighbors recently requested a quote
Recommended by95%of homeowners
Avatar for Crystal Renovations LLC
Crystal Renovations LLC
5.0(
57
)

Serving Chelsea, MA and surrounding areas

Angi Approved

In business since 2003

Free estimates

Emergency services offered

"We hired Pedro and his crew to renovate our basement and to say we are thrilled would be an understatement. Pedro and his crew were very professional throughout the whole project, went above and beyond and exceeded are expectations. We now have a basement that we love and the whole family enjoys! "
Remodeling - General Project
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+10

Response time3 days
2 neighbors recently requested a quote
Recommended by94%of homeowners
Avatar for MMP Construction Inc
MMP Construction Inc
4.7(
191
)

Serving Chelsea, MA and surrounding areas

Angi Approved

In business since 2004

Free estimates

Emergency services offered

"We needed a skylight installed in our bathroom, and MMP did an excellent job--we are very happy with it! The team was friendly and worked quickly and efficiently to get it done before it got dark, and the quality of their work was excellent. Matt was very friendly and nice to communicate with as well, and always responded right away. I highly recommend MMP Construction to anyone looking for great quality work and excellent customer service."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+154

1 neighbors recently requested a quote
Recommended by89%of homeowners
Mavridis Contracting Services
5.0(
14
)

Serving Chelsea, MA and surrounding areas

Angi Approved

In business since 1998

Free estimates

Warranties offered

"I wanted a shower expanded. George Mavridis's estimate was very competitive but I hired him because I knew he was honest, quality focused and an open communicator. He has a small crew and excellent subs so he's not super fast. But Mavridis is excellent. One example: The shower needed a new fan, vented through the attic roof. The attic boards were all cut (before my time) in half when insulation was installed. The attic floor was unstable and unsafe. George was very busy but he had his team replace the boards with plywood panels...for 20% less than I expected. Why? Because he wanted to make sure I would be happy when the job was done. I could give 4-5 other examples but you get the point. If you hire George, you'll be pleased."
Condo Reno
Condo Reno
Condo Reno
Condo Reno
Condo Reno

+73

Recommended by100%of homeowners
Avatar for RC Works
RC Works
4.9(
16
)

Serving Chelsea, MA and surrounding areas

Angi Approved

In business since 2018

Free estimates

Warranties offered

"RC Works did our bathroom renovation. We are happy with the process and the beautiful results! Andrey, Mariano and the team are professional, kind and easy to work with. Andrey is a wonderful listener and communicator. He responded to us promptly, managed the project efficiently and transparently, and kept us updated on the work and timeline. Big praises also to Mariano and Neto, who did the carpentry work, glass shower installation, among other tasks. They went above and beyond to deliver high-quality work, arriving on site with bright smiles and hard-working attitudes. We are also happy with the other team members, who are friendly and competent: tile installer for beautiful tiling, plumbers, electrician, painters and cleaners. Overall, we would highly recommend RC works."
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

5 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Cowboy General Services, Inc.
Cowboy General Services, Inc.
5.0(
9
)

Serving Chelsea, MA and surrounding areas

Angi Approved

In business since 2007

Free estimates

Emergency services offered

"Bruno and his team did an absolutely fantastic job at my new house. Started off just hiring him to do the interior painting, but ended up having him and his team do some tiling/kitchen backsplash, fireplace remodeling, front door and a laundry renovation. Him and his guys were extremely careful and efficient with their work. Cowboy General Services can truly do it all. I will definitely be hiring Bruno and his team again for my next home project!"
Kitchen original
Half bath
Half Bath
Bid board
Tile floor

+91

Response time4 hrs
8 neighbors recently requested a quote
Recommended by88%of homeowners
Avatar for WS Builders Corp
WS Builders Corp
4.3(
62
)

Serving Chelsea, MA and surrounding areas

Angi 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
5 neighbors recently requested a quote
Recommended by82%of homeowners
Avatar for Wizard of Boston
Wizard of Boston
5.0(
4
)

Serving Chelsea, MA and surrounding areas

Angi Approved

In business since 2018

Free estimates

Warranties offered

"10/10 recommend! Communication was excellent and their creative take on maximizing the space made the biggest difference! Looking forward to working with them again in the near future."
Response time2 hrs
Response rate100%
Recommended by100%of homeowners
Avatar for Charles C Murphy
Charles C Murphy
5.0(
1
)

Serving Chelsea, MA and surrounding areas

Angi Approved

In business since 1981

Free estimates

"Charles C Murphy is also The Murphy Group They have been doing great things for years. I most recently had my bathroom renovated and i am so happy. I love it! It’s a dream come true! I also appreciated that they kept things clean and Lisa kept us in the loop throughout the project. I would hire them again."
Basement reno Belmont
Basement reno Belmont
Basement reno Belmont
Cambridge bath reno
Cambridge bath reno

+14

4 neighbors recently requested a quote
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FAQs for basement remodeling projects in Chelsea, MA

Finishing a basement turns unused square footage into livable space and returns up to 70% of what you spend when you sell your home. Beyond that resale boost, you gain a playroom, home office, or guest suite you can start enjoying right away. That mix of daily comfort and solid return on investment (ROI) makes basement finishing one of the smartest upgrades you can tackle.

In some parts of the country—especially lots on swamps, high water tables, or other wetlands—local codes prohibit basements. Saturated soil puts constant pressure on foundation walls and lets water seep in faster than any sump pump can handle. 

If your property sits on waterlogged ground, building on a slab or crawl space is often safer, more affordable, and code-compliant.

Most basements wrap up in four to eight weeks. Framing takes three to five days, with electrical and plumbing rough-ins following over the next week. Add five days for drywall, two to three for flooring, and another week for paint, trim, and punch-list items. 

Delays can happen if materials run late or your contractor’s calendar is packed, so build in a little cushion when you plan.

Whether a finished basement counts toward your home’s official square footage depends on local rules. Many areas only include below-grade space if it has code-approved egress, fully finished walls, ceilings, and floors, plus consistent heating. 

Check with your local assessor or building department before you start; meeting those standards can affect taxes, appraisals, and resale value.

Building codes require a checklist: dedicated heat and electrical service, a code-approved stairway, and at least one egress window or exterior door. Walls, ceilings, and floors must be fully finished and meet insulation, ventilation, and fire-separation standards. If you add a bedroom, you’ll also need a closet, proper clearances, and safe exits. If you change the layout later, be ready to update the space so every new room still meets today’s code.

The Chelsea, MA homeowners’ guide to basement remodelings

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