General contractor · Boston, MA · reviewed since 2014
iHow the Experts Score is calculatedEach factor is scored 0–100 on absolute terms (standing in the category can only raise it), then weighted; problems flagged in review highlights or a recent slide in ratings are subtracted:Satisfaction 55%94+51.3Reliability 24%95+23Value 14%100+14.1Replies to reviews 7%100+7.1Craft & service penalty98−0.2Experts Score= 95Grade A: A = 80+, B = 60–79, C = 40–59, D = 20–39. Needs 10+ reviews.95SCORE
AGradeiLetter from the Experts Score: A = 80+, B = 60–79, C = 40–59, D = 20–39, F = under 20.
#10 of 46 home buildersiPosition by Experts Score among all companies we track in this category. · better than 80%
4.9★★★★★100 Google reviews · 24 photos
95%five-star reviews
5.00★last 12 monthsiAverage stars on reviews from the last 12 months only.
0%1–2★ in 2 yearsiShare of 1–2★ reviews in the last 24 months — or the 20 newest reviews when the company had fewer than 20 in that time.
Google reviewers rate Abacus 4.9 out of 5 based on 100 reviews, with the owner responding to 88 percent of them. Customers frequently praise the company’s communication, professionalism, and ability to handle complex projects like gut renovations, additions, and deck construction efficiently. While most feedback highlights punctuality, fair pricing, and high-quality craftsmanship, one low-star review criticized a failure to provide correct plans for a staircase installation and a subsequent refusal to rectify the error.
Google rating: 4.9 out of 5 from 100 reviews (95% five-star).
Reviews on this page: 100 Google reviews (95 with written comments, 3 with photos).
Owner responses: the business replied to 88% of reviews.
Most recent review: October 22, 2026.
Service: Home Builder serving Boston, Massachusetts.
Data from Google, last updated October 26, 2026.
Score profile vs other home builders
Score per factor (100 = best)iEach factor is scored 0–100 on absolute terms (star average, share of 1–2★ reviews, price verdicts…); standing within the category can only raise it, never lower it.. Strongest: value and momentum; weakest: satisfaction.
AbacusHome Builders median0 = centre, 100 = best
SatisfactioniSatisfaction · 54% of the scoreRecency-weighted star average (2-year half-life), shrunk toward the category mean by review volume; the company’s own lifetime average as the prior; absolute: 4.0★ = 0, 5★ = 100.Abacus: 94/100 on this factor. Category median: 89.A
94
ReliabilityiReliability · 24% of the scoreHow rarely jobs go badly: share of 1–2★ reviews — 60% the last 24 months (or the 20 newest if fewer), 40% all-time; 0% = 100, 15%+ = 0; the category percentile can only raise it.Abacus: 95/100 on this factor. Category median: 86.A
95
Craft & serviceiCraft & service · penalty only, up to −10 pointsGoogle review highlights: Quality, Professionalism, Responsiveness, Punctuality — how rarely reviewers flag them as a negative, per review since highlights began; 0% = 100, 5%+ = 0. Subtracted from the score (up to −10), never averaged in — clean highlights are the norm, not a bonus.Abacus: 98/100 on this factor. Category median: 93.A
98
ValueiValue · 14% of the scoreCustomers’ own price verdicts (Great / Reasonable vs Overpriced) and Value highlights; 65% absolute (all “reasonable” ≈ 80, “great” = 100), the category percentile can only raise it.Abacus: 100/100 on this factor. Category median: 99.A
100
MomentumiMomentum · penalty only, up to −10 pointsPenalises only a real slide: last-12-month average below lifetime (−0.5★ = 0). Still 4.8★+ over the last year, or steady/improving = 100. Subtracted from the score (up to −10), never averaged in.Abacus: 100/100 on this factor. Category median: 100.A
100
Replies to reviewsiReplies to reviews · 7% of the scoreHow often the owner publicly replies to reviews under 5★ (1–4★). Needs 3+ such reviews, otherwise not counted; 65% absolute (80%+ replied = 100), the category percentile can only raise it.Abacus: 100/100 on this factor. Category median: 75.A
100
Bar = this company · dark tick = category median.
Star ratings
100 Google reviews we collected
4.9of 5
5 stars9595%
4 stars44%
3 stars00%
2 stars11%
1 star00%
Praise vs complaints
Phrases our text analysis found in 95 written reviews
100%praise
Praise258100%
Complaints10%
PriceiGoogle asks reviewers whether the price was great, reasonable or overpriced; these are their answers.
Price verdicts customers left with their Google review
100%fair
Great price526%
Reasonable1368%
Overpriced00%
Not sure15%
Topic share
How often each topic comes up in the written reviews
7topics
Staff & attitude5622%
Would recommend4718%
Speed & response4116%
Quality & results4015%
Communication3614%
Honesty & trust218%
Price & value187%
What customers talk about
We read 95 written reviews and marked every phrase about these topics. The same colors are highlighted in the reviews.
“Once we kicked off the project they were professional and communicative at every step.”
“I would highly recommend due to their professionalism and quality of work.”
“The Abacus team is highly skilled, very knowledgeable and quite responsive.”
“We can't thank Abacus enough for all the great work they did!”
“Great staff, great communication, awesome final product.”
“They are trustworthy, reliable and conduct high quality work.”
“Their pricing was very fair for the level of quality and craftsmanship delivered.”
People customers mention
Mark21 reviews
Builders17 reviews
Lua7 reviews
Gerald6 reviews
End5 reviews
Little3 reviews
praise complaint · found by our text analysis, Google review wording unchanged.
Reviews for your job
Customers hired Abacus for 8 kinds of job. Pick one to see what they paid and said.
Clinton3 reviewsiTotal number of Google reviews this person has written across all businesses on Google Maps (not just this one). More reviews usually means a more experienced, trustworthy reviewer. · 3 days ago★★★★★
Highly, highly recommend working with Abacus! After a failed attempt and unfortunate lawsuit with another contractor, Abacus stepped in the pick up the pieces. Our 3 story porch build was very complicated. They stuck with us for over a year through many design revisions and other issues. Once we kicked off the…
Ally4 reviewsiTotal number of Google reviews this person has written across all businesses on Google Maps (not just this one). More reviews usually means a more experienced, trustworthy reviewer. · 6 days ago★★★★★
Great staff, great communication, awesome final product. We can't thank Abacus enough for all the great work they did!
Debra8 reviewsiTotal number of Google reviews this person has written across all businesses on Google Maps (not just this one). More reviews usually means a more experienced, trustworthy reviewer. · 6 days ago★★★★★
The whole Abacus team worked with us and responded to our specific requests during the project. They build a solid deck for us and we are quite pleased with the result. This was a tricky project, but Abacus was able to give us exactly what we wanted/needed. I recommend Abacus very highly.
Not sureGeneral constructionDeck installationDeck remodeling
keenan2 reviewsiTotal number of Google reviews this person has written across all businesses on Google Maps (not just this one). More reviews usually means a more experienced, trustworthy reviewer. · 6 days ago★★★★★
The entire team was great while working on a new build. I would highly recommend due to their professionalism and quality of work.
New building construction
Peter4 reviewsiTotal number of Google reviews this person has written across all businesses on Google Maps (not just this one). More reviews usually means a more experienced, trustworthy reviewer. · 2 weeks ago★★★★★
Just completed a large project on our condo. Did a terrific job. Very high quality work.
Mahyar1 reviewiTotal number of Google reviews this person has written across all businesses on Google Maps (not just this one). More reviews usually means a more experienced, trustworthy reviewer. · 3 weeks ago★★★★★
One of a kind - professional, detail-oriented, responsive, and makes sure the construction work is done right and meets engineering requirements and building regulations. Highly recommended. From an engineer’s perspective, it has been a pleasure having Abacus execute our designs.
Highly, highly recommend working with Abacus! After a failed attempt and unfortunate lawsuit with another contractor, Abacus stepped in the pick up the pieces. Our 3 story porch build was very complicated. They stuck with us for over a year through many design revisions and other issues. Once we kicked off the project they were professional and communicative at every step. We will use Abacus for all future projects at our condo.
Price assessment: Reasonable price
Services: Construction management, Deck installation, Deck remodeling
Ally Girasole4 reviewsiTotal number of Google reviews Ally has written across all businesses on Google Maps, not just this one.
The whole Abacus team worked with us and responded to our specific requests during the project. They build a solid deck for us and we are quite pleased with the result. This was a tricky project, but Abacus was able to give us exactly what we wanted/needed. I recommend Abacus very highly.
Price assessment: Not sure
Services: General construction, Deck installation, Deck remodeling, Demolition
Bruce DaSilva1 reviewiTotal number of Google reviews Bruce has written across all businesses on Google Maps, not just this one.
We had a terrific experience working with Abacus over the course of our complete gut reno transforming a 2 family attached row house into a single family home. The project was a complete gut and tear-down all the way down to the ground and a complete build including detailed finishings.
The Abacus team is highly skilled, very knowledgeable and quite responsive. We had many questions throughout given the specific nature of this project, some unique needs of our family, and the desire for certain aesthetic details. The team always went above and beyond striving to address our questions, meet our needs and come up with creative solutions where needed.
Mark always made himself available whenever we needed him and had command of the details of the project as the team kept him in the loop. Ger and Lua led the demo and early construction phase while Paul took over mid-build with overall project coordination and ensuring the finishing details were to our satisfaction. We had the true soup to nuts experience in expert hands all the way through.
We highly recommend Abacus for your project. They are trustworthy, reliable and conduct high quality work. We are very pleased with the final outcome, and they remain highly responsive to any follow-up questions. You will not go wrong trusting them with your project!
Peter Fogel4 reviewsiTotal number of Google reviews Peter has written across all businesses on Google Maps, not just this one.
One of a kind - professional, detail-oriented, responsive, and makes sure the construction work is done right and meets engineering requirements and building regulations. Highly recommended. From an engineer’s perspective, it has been a pleasure having Abacus execute our designs.
Services: Construction management, General construction
Julia Hill2 reviewsiTotal number of Google reviews Julia has written across all businesses on Google Maps, not just this one.
We hired Abacus to build a roof deck and could not be happier with how it turned out. Our project needed variance approvals, and they were patient with me while I worked through that process, which took a while.
The finished deck is beautiful. The crew was also genuinely friendly and easy to have around the house, which matters more than you’d think when people are working on your home for weeks. At the end they helped us get a very heavy table up two flights and onto the roof, which was well beyond anything we asked of them.
Services: General construction, Deck installation, Deck construction, Composite decks
