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Find Basement remodelers in Winthrop

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

Serving Winthrop, MA and surrounding areas

Approved

Super Service Award Winner

In business since 2004

Free estimates

Warranties offered

"I hired Silmac construction to remodel my basement. They put in a three-quarter bath, kitchenette, and finished the rest of the basement. This included cutting foundation for full size windows, putting in a new zone for heating and cooling system, and all the plumbing and electrical work needed. They were very professional and did an excellent job. I have gotten many compliments on our basement and I will hire them again to do work on my house."
Final
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+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 Winthrop, MA and surrounding areas

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
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+10

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

Serving Winthrop, 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."
Additional Photos
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+154

1 neighbors recently requested a quote
Recommended by89%of homeowners
Avatar for Neary Construction
Neary Construction
4.9(
154
)

Serving Winthrop, MA and surrounding areas

Approved

In business since 1995

Free estimates

Emergency services offered

"The most important part of a remodeling project is your contractor. It is the contractor that determines how smoothly the project goes and how pleased you will be when it is finished. Liam Neary is the contractor I would want to work with again. We actually enjoyed the remodeling process because of Liam. Liam was very attentive to all our concerns throughout the project. All work performed by Liam himself was exceptional. He is neat, prompt, and organized with a-plus communication. Liam is honest, congenial and eager to please. Subcontractor work occasionally did not rise up to Liam's standards. Whenever we pointed these minor details out, Liam always rectified the issues. We love our new kitchen!"
After a little framing is done we start closing up the walls
Another view of recess cabinet and vanity cabinet
This is the Bathroom before demo
Tiling done before final fixtures got installed
Corner shelves

+27

Response time1 day
8 neighbors recently requested a quote
Recommended by97%of homeowners
Avatar for TrustBuilt Construction LLC
TrustBuilt Construction LLC
5.0(
6
)

Serving Winthrop, MA and surrounding areas

Approved

In business since 2025

Warranties offered

Credit card accepted

⭐ Hundreds of Happy Homeowners Across Massachusetts\n🔒 Fully Licensed & Insured\n\nTrustBuilt Construction specializes in basement remodeling and basement finishing, turning underused spaces into beautiful, functional living areas that add real value to your home.\nWe also provide high-quality:\n\n• Kitchen Remodeling\n• Bathroom Renovations\n• Deck Construction & Remodeling\n\nWe hold active Massachusetts HIC and CSL licenses and focus on quality craftsmanship, clear communication, and long-lasting results.\n\n📍 Serving homeowners throughout Massachusetts\n\nTo see reviews and project photos, search “TrustBuilt Construction” on Google and visit our Google Business profile.\n\n📩 Message us today to schedule your consultation.

Past Projects
Past Projects
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+28

5 neighbors recently requested a quote
Recommended by16%of homeowners
Avatar for Five Stars Remodeling
Five Stars Remodeling
4.7(
8
)

Serving Winthrop, MA and surrounding areas

Approved

In business since 2012

Free estimates

Emergency services offered

"Attention to detail is paramount to Five Stars Remodeling. My wife and I had specific plans and this company was able to deliver the plan beyond our expectations."
Response time1 day
2 neighbors recently requested a quote
Recommended by75%of homeowners
Avatar for Wizard of Boston
Wizard of Boston
5.0(
4
)

Serving Winthrop, MA and surrounding areas

Approved

In business since 2018

Free estimates

Warranties offered

"Derik and his team were amazing to work with. We refreshed our kitchen and remodeled our basement- both projects we’ve been wanting to do since moving in. This was our first major project as first time homeowners and Derik listened to all of our concerns and answered all of our questions. Our home has completely transformed and we couldn’t be happier with the work. High quality, attention to detail, top notch customer service. Would highly recommend this company to a friend."
Response time2 hrs
Response rate100%
Recommended by100%of homeowners
Avatar for A-Z Finish Carpentry, LLC
A-Z Finish Carpentry, LLC
4.9(
7
)

Serving Winthrop, MA and surrounding areas

Approved

In business since 2020

Free estimates

Small jobs welcome

"We hired A-Z for an extensive remodeling job that included complete remodels of three bathrooms, two bedrooms, and a laundry room, as well as new construction of a room in our finished basement. I donâ t even know where to begin to describe how great Charles and his crew were! He was communicative throughout the process and kept us updated on the progress and timeline. I was very pleased that he prioritized our needs while never compromising workmanship. The project is now completed, and what has resulted is a masterful remodel with which I could not be more pleased. I highly recommend Charles and A-Z Finish Carpentry for anyone who wants quality work from a quality company."
Our work
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Our work

+41

Response time1 day
8 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for New England Carpentry Inc
New England Carpentry Inc
5.0(
48
)

Serving Winthrop, MA and surrounding areas

Approved

In business since 2014

Free estimates

Emergency services offered

"Gil was very reliable, responsive, and professional. All of the work was completed in a timely manner, and our requests and questions were addressed without delay. The work was of very high quality and has completely transformed our basement. We will definitely contact him again for future work."
Response time1 day
Response rate92%
4 neighbors recently requested a quote
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FAQs for basement remodeling projects in Winthrop, 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 Winthrop, MA homeowners’ guide to basement remodelings

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