Author Archives: opadmin

Liz M.

I had to remodel a bathroom and address water damage on two lower floors and Abacus was an incredible partner – even when I was stuck on the other side of the world for the first two weeks of figuring out the plan and materials. Catrina was an amazing help with finding materials and finalizing… Continue Reading →

Johnna Barry
President – Bridge Property Services

As the owner of a property management company located in South Boston; we have worked with Mark and the Abacus team for several years on multiple condo building projects, both interior and exterior Various projects have included replacement window installation & new siding, exterior painting for multiple story buildings, deck repair and replacement and insurance… Continue Reading →

Jerry Adler

We had a fire next door and significant damage was caused to our building. Boston Fire came into our building and knocked out most of the windows and doors to fight the fire, ruining most of the building in the process. Abacus did an excellent job repairing the building from a pretty miserable state, and… Continue Reading →

George K.

Not enough good words to describe Mark (whom I was a neighbor to for a couple of years) & the Abacus team who developed my townhouse in Southie. Excellent work all around, and whenever any issues arise and I needed help with things that needed to be done at home, work was always of high… Continue Reading →

Charles Dougherty

Abacus recently completed a new deck for our condo building on Beacon Hill after also arranging for replacement of our roof by McConomy Construction. The work was very capably performed. Abacus proved to be that all too rare contractor who did not over promise, did the work that they promised, did it when they promised,… Continue Reading →

Tara Tarr

Impressed with the prompt communication and reliability of Abacus. Professional work teams that work with you no matter how small or big the project, show up, get the work done, and clean up well afterwards. Mark’s consistent communication via email made working with Abacus seamless. Thanks!

Jeffrey Santos

We contracted with Abacus to help us build a new roof deck on our building in South Boston. During the permitting and negotiation process Abacus was incredibly professional and patient while we worked out the details of what we wanted and ensured everything was done by the books. They truly know how to navigate through… Continue Reading →

David S.

We hired Abacus to replace our back deck and install new crown molding in 4 rooms, and we couldn’t be happier with the finished product! The whole process was effortless from start to finish. We sent Mark a few photos of our deck and the rooms where we wanted to install crown molding. Within a… Continue Reading →

Ani A.

Our association hired Abacus to redo our roof and gutters that was damaged and leaking due to storms last summer. We worked closely with Mark and Darren. Both were very responsive, very detail oriented, and did a great job on our roof. They made sure everything looks and works the way it should and that… Continue Reading →

Marcia H.

We worked with the great team at Abacus last fall to put a roof deck on our home in South Boston. Mark was very responsive in providing a detailed quote and quickly began the project as soon as permitting allowed. The general contractor on our job was Gerald McGuigan and I truly do not think… Continue Reading →

Penn Clarke

In November 2015 we purchased an old Victorian single family home in South Boston. Considering it was built in the 1890s this house was a complete overhaul from top to bottom. As part of this reno we also wanted to improve upon the outdoor space, including building a deck off the back of the house,… Continue Reading →

Ali Dudley

I had a great experience working with Abacus Builders. They built me a beautiful roof deck (including roof access and stairs) in South Boston which is an intense project so I was very grateful to be working with experienced and professional contractors. Mark and his team were extremely thorough, paid close attention to detail and… Continue Reading →

Susan Paradiso

Mark and crew installed our roof deck. The deck is beautiful, see the St Mary’s deck on his web site. His crew did a great job and installed the deck quickly. Mark is super responsive to email and phone calls. He also worked with us to redesign the door to the deck before construction began,… Continue Reading →


Abacus was awesome – they did a big renovation for us (kitchen, bathroom, new flooring, etc.) in the exact amount of time that they said they’d do it while also producing extremely high quality work. Sean and Mark were a pleasure to work with – they were extremely responsive and professional. I really enjoyed working… Continue Reading →

Mac Chinsomboon

I inquired to see if they could swing by and give me a quote for a very large scoped project. He indicated that they were already booked up solid, but did recommend me to call a colleague. I’m happy to see professionals recommend other professionals.

Kyle Vonruden

The company was very easy to work with. I was able to speak with the owner regularly. Everyone was helpful and supportive and they were very professional. It was an overall positive experience.

Jeffrey Lee

Mark was great from beginning to end. Very professional, right on budget and didn’t even take payment until after the project was done

Joe Gugliotta

Recently purchased the top floor unit on a condoized 3 family in Southie. The builder wanted to build a roof deck but did not get permits in time for sale. Originally wanted simple spiral staircase on back deck going up to roof, but was denied at ISD. Resubmitted with stairs going up back staircase to… Continue Reading →

Thomas Finnerty

I am a trustee of a 7 unit, self managed condominium in South Boston. Because it was constructed in 1986, repairs and improvements have been necessitated by the passage of time. I had used other contractors in the past. Since I found Abacus Builders, I always turn to them. They are simply the best by… Continue Reading →

Drew McGillivary

Mark and the Abacus team are some of the best contractors I’ve worked with. They put in a 600 square foot roof deck for us on time and mostly on budget (other than special requests we made for materials). They’re efficient, timely, and communicative. I highly recommend Abacus for indoor or outdoor projects. Top notch… Continue Reading →

Maury Hall

Mark – I was very pleased with the work that you did for us, especially the tiling. You’ve got a great crew working for you, I really enjoyed them. I’m sure it wasn’t always easy coordinating the different aspects of this job but everything came out the way we hoped. Thanks again.

Curtis McSorley

Thanks Mark. Together my plans, your construction expertise has created a house/home that i will live in the rest of my life. The property is constantly receiving many compliments from the neighborhood.

Tim H

Great experience. Mark and the team at Abacus do great work. I feel lucky to have found a reliable and trustworthy, professional to have on my side with respect to work done in the home.

Elizabeth M

Contractor was called without prior experience with this company and addressed my concerns of the snow on my roof immediately sending out his workmen within days to clear it. The gutter and stairs were damaged due to the ice/snow and they fixed both issues, the stairs were rebuilt within days and the gutter reinstalled as… Continue Reading →

Joe D

Mark has been doing work for me for more than 5 years now. I have to say he does exactly what he says he is going to do. He is there when he says he is going to be there, and his men are completely professional and the quality of the work is very good…. Continue Reading →

Doris W

Abacus Builders has done a wonderful remodeling job for my office and met all my expectations with their knowledgeable and skillful services. Everyone was professional and so pleasant to work with. It was a great experience and we would call on Abacus again without hesitation when next we need to update. Their word was their… Continue Reading →

Denise P

Emailed Mark at Abacus to remove ice and snow from my roof. Responded immediately. I could not be any happier with the service we received from Mark and his crew. They worked from the minute they arrived until the job was done. I was very, very impressed with all aspects of my dealings with Abacus…. Continue Reading →


Abacus recently did several renovations on our three family home in South Boston – all of which were very well done. Mark and his team were very professional, fair, always responsive, and did a great job cleaning up after each project

Brooks B

I’ve had very limited interaction with contractors so I didn’t know what to expect, but Abacus was very professional, prompt, courteous, and swift in their work. Arranging a date/time for the work to begin took several back-and-forth conversations over days on account of our busy schedules, but once the time frames lined up the work… Continue Reading →

Matt & Christian

Abacus Construction has completed two major jobs on our old house in South Boston. First he helped us complete some major interior work reconfiguring the small bedrooms into a master bedroom and a guest room. He built three closets, replaced three windows including a skylight. He also refinished the old pine floors and drywalled the… Continue Reading →

Heather M

Mark took over the project after I had to fire the initial contractor for the incompetence and failure to complete the job in a timely manner. Mark was fantastic. Mark completed the work in the time frame promised at a reasonable price. Through he had many project he was juggling, he made me feel like… Continue Reading →

Kevin H

Mark and the team at Abacus are fantastic. I had multiple bids to renovate a 3 story single family home in South Boston and the Abacus team showed up on sight, walked through my plans and had a quote ready with 24 hours. Mark handled all permits, spoke with the neighbors about the work his… Continue Reading →

Paul G

We have used Abacus Builders for almost 5 years and each and every experience is exactly what you can hope for from a professional and trustworthy general contractor. Mark and his team are fully committed to customer satisfaction by being honest, upfront and addressing all concerns with full attention and responsiveness. I cannot recommend these… Continue Reading →

Bob M

This year I was fortunate enough to contract with Mark Little of Abacus Construction to renovate my home. Mark is professional, attentive and detail oriented. I can’t say enough about his dedication to perfection and his accommodating demeanor. Having dealt with contractors before, I’m used to hearing”…that wasn’t written down” or “that will cost extra.”… Continue Reading →

Catherine S

At a friend’s housewarming last summer, my husband and I were blown away by how fantastic her home looked. When I mentioned we were considering renovating our home, she could not speak highly enough of Mark Little and his company Abacus Construction. So, when a few months later we committed ourselves to have new floors… Continue Reading →

Holley S

Mark and Bob saved my business -literally. My original contractor stole over $55,000 from me. Abacus came and promised to get the job done on the original schedule. They worked days, nights, weekends and holidays.The workmanship was incredible. Bob had great ideas and actually helped to improve the original plans (while staying on budget and… Continue Reading →

Vincent L

Abacus builders are a great team and so helpful. They have built up my new custom house beautifully and reliable. This is a company I recommend that you can rely on. Thanks so much Abacus!

Gian V

The service was excellent. I was working directly with the owner Mark Little. He was on time for most part and work was completed to my satisfaction. There was a little paint on screen windows, following the work, but Mark offered to clean them. He also help me assemble and move furniture at a very… Continue Reading →

Stanley C

Mark’s crew fixed a roof gutter which had been leaking for quite some time. They were able to assess the problem and fix the leak where others had failed. Not a big job but one that could have led to bigger problems.

John B

Mark was excellent. Worked well with electrical and plumber contracts. Very responsive and always return my calls. Stayed within budget and one time.

Kyle V

The company was very easy to work with. I was able to speak with the owner regularly. Everyone was helpful and supportive and they were very professional. It was an overall positive experience.

Now Hiring – Salesperson / Estimator

Salesperson / Estimator – Residential Construction Abacus Builders & General Contractors is a rapidly expanding construction company based in Boston. In the last few years, we have not only continued to grow our reputation for excellence but also evolved into a desirable company to be a part of due to our high standards of work…. Continue Reading →

St Patrick’s Day Parade 2018

Proudly Supporting the Allied War Veterans Every year on March 17, the Irish and the Irish-at-heart across the globe observe St. Patrick’s Day. What began as a religious feast day for the patron saint of Ireland has become an international festival celebrating Irish culture with parades, dancing, special foods and a whole lot of green…. Continue Reading →

Abacus Builders supports the annual St. Patrick’s Day Breakfast in South Boston

Abacus Builders – a proud sponsor of the 2018 Saint Patrick’s Day Breakfast The not-for-profit South Boston St. Patricks’s Day Heritage Fund, Inc., was established to help plan, organize and defray production costs of the annual breakfast, ensuring that the cultural experience of Saint Patrick’s Day is enjoyed by all. Every year, in addition to… Continue Reading →

Abacus Getting Involved in Community Arts

Tír na nÓg Medicine Wheel Productions Presents Tír na nÓg in partnership with the Fenway Alliance’s Public by Design Initiative Tír na nÓg is a temporary public art installation by two internationally acclaimed artists: Caoimhghin Ó Fraithile (Ireland), “South of Hy-Brasil” and Michael Dowling (Boston-US/Ireland), “Well House”, commissioned by South Boston’s Medicine Wheel  Productions. Caoimhghin… Continue Reading →

Abacus Builders & the South Boston Collaborative Center Fundraiser

Founded in 1997, the South Boston Collaborative Center provides information, referral and treatment services to the residents of South Boston and its surrounding neighborhoods. The Collaborative serves adults and adolescents, as well as provides services to youth at the South Boston Educational Complex. They provide each individual an opportunity to focus on their goals and… Continue Reading →

Educating For Success

Abacus Builders is a proud sponsor of the Notre Dame Education Center, a premier nonprofit serving the community of South Boston. The Notre Dame Education Center was founded in 1992 by the Sisters of Notre Dame de Namur. The Sisters had operated Cardinal Cushing High School in South Boston, and when that school closed, they… Continue Reading →

ONEin3 Boston

Abacus Builders is proud to be involved with Mayor Marty Walsh and the ONEin3 initiative to support and empower Boston’s youth. GERARD AND SEAN – ABACUS TEAM With more than one-third of Boston’s population between the ages of 20-34, Boston is home to the highest proportion of young adults out of any major city in… Continue Reading →

Harvest of Hope: Abacus Builders Business Sponsor

Abacus Builders is a proud sponsor of the 2015 Harvest of Hope Auction hosted by the South Boston Community Health Center. This donation will help children and families in the South Boston area with their health needs, serving over 400 families a month as well as providing lifesaving addiction treatment and prevention programs. The South… Continue Reading →