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Business ProfileRenovation Contractors in Boston, Massachusetts

Abacus

Listed in Boston 83 reviews(617) 269-1213

Abacus

Abacus Builders is a Boston general contractor focused on ground-up development and full-gut remodeling. It also restores building envelopes and investigates leak sources, serving the Boston Metro and MetroWest. Mark Little started the company in 2006.

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Business Highlights
  • The company is fully licensed and insured in Boston.
  • The envelope-restoration crew is on payroll, and the same crew handles diagnosis and repairs.

Service Area

Boston Metro and MetroWest.

Active Business Listing

Abacus is one of 12 renovation contractors ProsGrade lists in Boston, Massachusetts.

Active
Public local listing
Listing details

12 services listed, including Ground-up new construction, Full-gut renovations and Fire and water damage restoration. Open weekdays, closed on weekends. 83 reviews.

  • Verified listing details
  • Service information
  • Customer review signals
  • Photo gallery
  • Public contact information
  • Published local profile

How This Business Compares

How Abacus compares with the other 11 renovation contractors on ProsGrade in Boston, using public Google ratings and review counts.

  • Ranks in the top half of the 12 Boston renovation contractors on ProsGrade by Google rating and review volume.
  • Has more Google reviews (83) than 10 of the 11 other Boston renovation contractors on ProsGrade.

Services Covered

12 services
  • Ground-up new constructionMultifamily home building
  • Full-gut renovationsTriple-decker remodeling
  • Fire and water damage restoration
  • Roof decks and porches
  • Roofing, siding and masonry
  • Planning and permittingBoston ISD permit applications
  • Window and door flashing / building-envelope repairDirecting water away, protecting framing and addressing hidden moisture issues
  • Historic masonry and repointingDeteriorated mortar joints; appropriate materials and techniques for older structures
  • Exterior facade and siding restorationCommercial and residential buildings
  • Commercial waterproofingBuilding envelopes, foundations, facades, decks and other vulnerable areas
  • Roof and balcony waterproofingProperly pitched surfaces, waterproofing membranes and EPDM rubber roof replacement when required for deck and balcony projects
  • Building-envelope leak investigationEvaluation of exterior walls, windows, doors, roofs, balconies and masonry

Reviews

What customers say

Customers praise clear communication and respectful crews; two reviewers also say project timelines were met. A bathroom-remodel customer says the team minimized disruption because it was the customer's only bathroom, while a condo-board reviewer says the team helped explain change orders and complete the project within budget.

Customer Reviews

Victoria G.

I used Abacus for a complete bathroom remodel and couldn’t be happier with the experience. The entire team was courteous, respectful, and highly professional. Communication was excellent throughout the project, with clear updates on progress and any issues that arose. Since this was my only bathroom, they were especially thoughtful about minimizing disruption. Their pricing was very fair for the level of quality and craftsmanship delivered. Even though this was a relatively small project for them, they made me feel like a top priority from start to finish. The final result was a beautiful bathroom, clearly done right and built to last.
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Kelly Kenneally

I had an outstanding experience working with Abacus Builders. From start to finish, the communication was clear, professional, and consistent. Every phase of the project was completed on schedule, and the craftsmanship exceeded my expectations. The team was respectful of my home, detail-oriented, and truly committed to delivering quality work. I couldn’t be happier with the results and would highly recommend them to anyone looking for a reliable, skilled contractor.
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Tristan Rock

I have had the pleasure of working with Mark and his team on two occasions. It's one thing to hire a firm to work on a rental or a flip, but when it is your own home, you only want the very best. The Abacus team took the time to meet with my wife and me. We discussed our vision and ultimate goals for the proposed remodel. Mark came back with several options, including some great ideas that we hadn't considered. Having an experienced set of eyes review our ideas and plans, and discuss all the available options with us, was huge. We really did feel that the Abacus team was genuinely invested in our remodel. I have recommended Mark & Abacus to numerous friends and family, and I have no hesitation in doing so.
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John Maggio

I can’t say enough good things about Abacus Builders. They are the most reliable, go to builder and developer in South Boston and Greater Boston. They show up, do the work, and do it right. I have worked with them on multiple projects, and every experience has been smooth, professional, and exactly what you expect from a top-tier contractor. Every client I have referred to Abacus have all said the same thing, they were impressed with the quality, the honesty, and the way Abacus goes above and beyond from start to finish. Communication is sharp, timelines are hit, and the craftsmanship is first class. If you want a contractor you don’t have to worry about, Abacus is the one.
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Deirdre Fenick

Abacus planned, managed, and executed on a large scale condo property construction project for us. At issue was poor workmanship defects in the original installation of the water vapor barrier from the original development, that was allowing water to get into units. The Abacus team was highly engaged and responsive as we worked through the strategy to address the problem prior to them being on site, and this got quite detailed as we investigated the extent of the risk of water with a structural engineer, Abacus and our property mgmt team. At all times Abacus was a partner in answering our questions, investigating options, such as new evolutions in the water vapor barriers, and even removing windows to understand the extend of the flashing needed all prior to even kicking the project off. This partnership continued through the project. The Abacus team are strong communicators, and they worked with us to ease the burden, and demonstrated flexibility when working with individual unit owners. Abacus also was sensitive to our budget mgmt. As a condo board we were committed to keeping the project within budget. Abacus respected this, and worked with us, to enable us to understand change orders, and prioritize work / expense. In the end we stayed within budget, and the work effort was fully completed to our satisfaction. (Meaning nothing material had to be traded off.) I highly recommend Abacus as a partner in home construction projects.
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Frequently Asked Questions

How long can Boston permitting take?

Short-form permits are typically reviewed and approved within 24–48 hours; long-form permits for projects without zoning violations may be issued within 2–4 weeks from submission. Zoning Board of Appeals cases can take 3–12 months.

What permitting work does Abacus handle?

It coordinates with architects, engineers and attorneys, can lead abutters meetings and manage Zoning Board of Appeals appeals, and manages inspection timelines and final sign-offs.

How does Abacus handle fire or flood restoration?

It works with the property owner and insurer to secure the property, then identifies and estimates structural damage.