Massachusetts General Contractor logo

Massachusetts General Contractor

General contractor · Boston, MA · reviewed since 2019

How 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%86+46.9Reliability 24%87+21.1Value 14%100+14.1Replies to reviews 7%100+7.1Craft & service penalty67−3.3Experts Score= 86Grade A: A = 80+, B = 60–79, C = 40–59, D = 20–39. Needs 10+ reviews.86SCORE
AGradeLetter from the Experts Score: A = 80+, B = 60–79, C = 40–59, D = 20–39, F = under 20.
#8 of 11 general contractorsPosition by Experts Score among all companies we track in this category. · better than 30%
4.8 ★★★★★ 55 Google reviews · 24 photos
95%five-star reviews
5.00★last 12 monthsAverage stars on reviews from the last 12 months only.
0%1–2★, last 20 reviewsShare of 1–2★ reviews in the last 24 months — or the 20 newest reviews when the company had fewer than 20 in that time.
100%reviews answered by the owner
Aug 2026latest review

Massachusetts General Contractor at a glance

Reviewers frequently cite responsive communication, punctuality, and competitive pricing as key strengths of the contractor's services, which include plumbing, electrical work, and home remodeling. Customers often note that the team arrives on time, cleans up after projects, and provides clear explanations regarding repairs and building codes. However, low-star reviews report that initial low estimates can lead to substandard craftsmanship, such as loose hardware and electrical issues, alongside a lack of follow-up communication after contracts are signed.

  • Google rating: 4.8 out of 5 from 55 reviews (95% five-star).
  • Reviews on this page: 55 Google reviews (44 with written comments, 2 with photos).
  • Owner responses: the business replied to 100% of reviews.
  • Most recent review: August 16, 2026.
  • Service: General Contractor serving Boston, Massachusetts.

Data from Google, last updated November 10, 2026.

Score profile vs other general contractors

Score per factor (100 = best)Each 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: craft & service.

Satisfaction86Reliability87Craft & service67Value100Momentum100Replies to reviews100Satisfaction: 86 (median 92)Reliability: 87 (median 87)Craft & service: 67 (median 97)Value: 100 (median 100)Momentum: 100 (median 100)Replies to reviews: 100 (median 94)
This companyGeneral Contractors median0 = centre, 100 = best
SatisfactionSatisfaction · 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.Massachusetts General Contractor: 86/100 on this factor. Category median: 92.A
86
ReliabilityReliability · 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.Massachusetts General Contractor: 87/100 on this factor. Category median: 87.A
87
Craft & serviceCraft & 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.Massachusetts General Contractor: 67/100 on this factor. Category median: 97.B
67
ValueValue · 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.Massachusetts General Contractor: 100/100 on this factor. Category median: 100.A
100
MomentumMomentum · 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.Massachusetts General Contractor: 100/100 on this factor. Category median: 100.A
100
Replies to reviewsReplies 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.Massachusetts General Contractor: 100/100 on this factor. Category median: 94.A
100

Bar = this company · dark tick = category median.

Star ratings

55 Google reviews we collected

  • 5 stars5295%
  • 4 stars12%
  • 3 stars00%
  • 2 stars00%
  • 1 star24%

Praise vs complaints

Phrases our text analysis found in 44 written reviews

  • Praise10696%
  • Complaints44%

PriceGoogle asks reviewers whether the price was great, reasonable or overpriced; these are their answers.

Price verdicts customers left with their Google review

  • Great price3100%
  • Reasonable00%
  • Overpriced00%
  • Not sure00%

Topic share

How often each topic comes up in the written reviews

  • Would recommend2523%
  • Staff & attitude2220%
  • Price & value1816%
  • Quality & results1514%
  • Speed & response1514%
  • Honesty & trust87%
  • Communication76%

What customers talk about

We read 44 written reviews and marked every phrase about these topics. The same colors are highlighted in the reviews.

  • “Very happy with the work, they transformed my old home in Lynn Mass, into a newly renovated modern style home, and would definitely recommend.”
  • “He did some electrical work in my rental property & in my house, very professional, very recommended”
  • “He fixed our shower quickly and for a reasonable price.”
    “Guillermo will give you an estimate right away then once you agree on the contract and start time he doesn’t get back to you.”
  • “He did a great job installing my new shower tub, shades and other fixes around my place.”
  • “I called Massachusetts General Contrator for a clogged sink, and they were able to come out the same day.”
  • “They do an excellent job Painting and remodeling, Friendly and reliable crews.”
  • “Very responsive and knowledgeable, and patiently answered all my questions.”

People customers mention

  • Guillermo 12 reviews

praise complaint · found by our text analysis, Google review wording unchanged.

Reviews for your job

Customers hired Massachusetts General Contractor for 8 kinds of job. Pick one to see what they paid and said.

Recent reviews

Hermes1 reviewTotal 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 months ago★★★★★

He did some electrical work in my rental property & in my house, very professional, very recommended

Jill6 reviewsTotal 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 months ago★★★★★

So lucky to have found Guillermo!! He is very responsive, honest and hard working. He did a great job installing my new shower tub, shades and other fixes around my place. I will hire again in a heartbeat.

Bathroom remodeling
Alex2 reviewsTotal 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. · 9 months ago★★★★★

Guillermo was helpful, what i liked about it he was detailed, respectful, patient, and provided information on what he found and how to avoid it from happening again. For frozen pipe repair & for providing with the home heating inspections & recommendations Would recommend him for sure

ThomasLocal Guide · 15 reviewsTotal 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. · 9 months ago★★★★★

Guillermo and his team did excellent work. He perfectly executed the vision we had for our kitchen and bathroom. He got everything done on time and to completion. Very responsive and knowledgeable, and patiently answered all my questions. We’ll definitely work with Guillermo again—great guy!

Customer photo from Thomas's reviewCustomer photo from Thomas's review
Great priceKitchen countertop installationTile work installationInstall flooring
RubenLocal Guide · 35 reviewsTotal 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. · Edited 9 months ago★★★★★

I called Massachusetts General Contrator for a clogged sink, and they were able to come out the same day. Guillermo and Johnny were prompt, professional, and had the issue fixed in 30 minutes. He even cleaned up the area afterward. Highly recommend for fast and efficient service!

Great priceService not listed
Christopher1 reviewTotal 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. · 9 months ago★★★★★

The crew is amazing! Talented, responsible, and very affordable!! I’m waiting for an estimate for my next home improvement!!!! Highly recommended!!!

Photos

Customer reviews

4.8 ★★★★★ 55 reviews on Google · rating breakdown

Reviews from Google, shown as published (original wording, unedited).

Jobs customers hired them for — from Google's service tags and the review text
Team members customers mention
Filter by topic — each topic is highlighted in the reviews in the same color
Hermes quezada1 reviewTotal number of Google reviews Hermes has written across all businesses on Google Maps, not just this one.
Review from Google · view on Google
★★★★★

He did some electrical work in my rental property & in my house, very professional, very recommended

Response from the owner · 2 months ago

Thank you Elmer! Looking forward to changing the fan light next week! Thank you for recommending our construction company!

Jill Campa6 reviewsTotal number of Google reviews Jill has written across all businesses on Google Maps, not just this one.
Review from Google · view on Google
★★★★★

So lucky to have found Guillermo!! He is very responsive, honest and hard working. He did a great job installing my new shower tub, shades and other fixes around my place. I will hire again in a heartbeat.

  • Services: Bathroom remodeling
Response from the owner · 2 months ago

Thank you Jill your words are appreciated highly! I hope you enjoy the new, safe & classy shower upgrade, thank you for trusting us while you were on vacation! We’ll be there for you in a heartbeat if you need any home repair services!

Alex D2 reviewsTotal number of Google reviews Alex has written across all businesses on Google Maps, not just this one.
Review from Google · view on Google
★★★★★

Guillermo was helpful, what i liked about it he was detailed, respectful, patient, and provided information on what he found and how to avoid it from happening again. For frozen pipe repair & for providing with the home heating inspections & recommendations Would recommend him for sure

Response from the owner · 9 months ago

Alex thank you for the communication with all your help- We wouldn’t have been able to unfreeze the frozen pipe, I’m so glad that you talked about the heating right after the frozen pipe repair, now that we addressed all these issues, your tenants should be living more comfortably and have the knowledge on how to keep a warm in winter & take care of the house, thank you for choosing us as your home repair service! We’ll be around for any other repairs!

Thomas WhittamLocal Guide · 15 reviewsTotal number of Google reviews Thomas has written across all businesses on Google Maps, not just this one.
Review from Google · view on Google
★★★★★

Guillermo and his team did excellent work. He perfectly executed the vision we had for our kitchen and bathroom. He got everything done on time and to completion. Very responsive and knowledgeable, and patiently answered all my questions. We’ll definitely work with Guillermo again—great guy!

  • Price assessment: Great price
  • Services: Kitchen countertop installation, Tile work installation, Install flooring, Home renovations, Bathroom remodeling, Tile work replacement, Paint indoors, Painting, Shower refinishing
Response from the owner · 9 months ago

Tom & Liana, it was truly an honor to work in your home in Swampscott MA, thanks to all the communication we were able to get the bathroom remodel & kitchen renovations, electrical repairs, fans, chandelier - done as planned! Your vision was very clear & all the details decisions you guys made reflected that. I appreciate your kindness! The food, snack, beverages, pizza! We go work at homes to leave a strong lasting good impression through our quality work & respectful ways, but you guys left an even better impression on my crew & myself! Best of wishes as always! Thank you a ton!

Ruben SLocal Guide · 35 reviewsTotal number of Google reviews Ruben has written across all businesses on Google Maps, not just this one.
Review from Google · view on Google
★★★★★

I called Massachusetts General Contrator for a clogged sink, and they were able to come out the same day. Guillermo and Johnny were prompt, professional, and had the issue fixed in 30 minutes. He even cleaned up the area afterward. Highly recommend for fast and efficient service!

  • Price assessment: Great price
  • Services: Service not listed
Response from the owner · 9 months ago

Ruben thank you for having trusted us with your sink repair, I know it can be a little scary breaking down any substance inside the sink but your in good hands,we did our best by snaking it 50 ft down & breaking apart some waste/debris to get those drains unclogged, it was a pleasure to service your home repair in Peabody Mass! Beautiful home decor by the way & even more beautiful dogs!

Christopher Torres1 reviewTotal number of Google reviews Christopher has written across all businesses on Google Maps, not just this one.
Review from Google · view on Google
★★★★★

The crew is amazing! Talented, responsible, and very affordable!! I’m waiting for an estimate for my next home improvement!!!! Highly recommended!!!

Response from the owner · 9 months ago

Thank you Christopher! Carmen & little Carmen! It was a honor doing the vinyl floors in the entire basement & painting it, repairing the water damage on the ceiling & taking out that old siding in the back, waterproofing it & putting the pvc boards instead, it looks classy! It was a smart idea to change the exterior light to a camera flood light! beautiful views of the house by the way! We’ll be working on the estimate for you for the doors, windows! Thank you for the opportunity!

Angel Ayala1 reviewTotal number of Google reviews Angel has written across all businesses on Google Maps, not just this one.
Review from Google · view on Google
★★★★★

Great experience with Guillermo from start to finish. The bathroom remodel came out beautiful, the flooring looks amazing, and all the electrical work and recessed lighting were done perfectly. Everything was painted clean and professional. Very happy with the work, they transformed my old home in Lynn Mass, into a newly renovated modern style home, and would definitely recommend.

  • Price assessment: Great price
  • Services: Install flooring, Home renovations, Paint indoors, Painting, Shower refinishing, Remodeling, Bathtub installation, Service not listed
Response from the owner · 10 months ago

Thank you Angel, Taty & little Madison! it was my pleasure to remodel the bathroom, I really like the slick shower walls & tub from delta we installed for you. It was an elegant & quick turn around with the vinyl tiles & shower walls. You did an awesome job giving us the inspiration of what you wanted and we delivered. Also nice job with the distribution of the recessed lights, it really brought a lot of life to the new floors we installed & fresh paint on the walls! Enjoy your brand new home! Looking forward to your next future project!

Maria Rios9 reviewsTotal number of Google reviews Maria has written across all businesses on Google Maps, not just this one.
Review from Google · view on Google
★★★★★

I highly recommend Guillermo! He fixed our shower quickly and for a reasonable price. Great communication from when I first reached out to get a quote to the end of the project.

Response from the owner · Edited 10 months ago

Thank you so much! It was a pleasure to help you with the mixing valve & patch up, lovely family! Wish yall the best!

David enmanuel Gamero Rosa2 reviewsTotal number of Google reviews David has written across all businesses on Google Maps, not just this one.
Review from Google · view on Google
★★★★★

Very reliable & affordable contractor.

Response from the owner · a year ago

Thank you!

Michael S1 reviewTotal number of Google reviews Michael has written across all businesses on Google Maps, not just this one.
Review from Google · view on Google
★★★★★

Excellent company. Gets the job done. Would highly recommend.

Response from the owner · Edited 10 months ago

Thank you Micheal & Hilary & little Nate! It is an honor to remodel the full bathroom for you guys, I really like your design, I appreciate you giving us the opportunity to install a sump pump for your first floor apartment to drain the water properly! Also for letting me do the cat entrance in the bedroom! It was the first time I see that design for a cat door entrance! Very cool!

Massachusetts General Contractor on Google Maps →

Business details