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Coolock Construction is a Boston general contractor whose own Houzz profile is written by a third-generation general contractor; reviewers name David and his team. Its Massachusetts home improvement contractor registration, #213980, is active on the state registry. The BBB grades it A+, and it holds 5.0 stars from 8 Houzz ratings. In an April 2026 Google review, a customer said David was responsive and a pleasure to deal with throughout a deck-building project. A February 2023 reviewer had a kitchen ceiling and interior wall repaired after a broken pipe caused water damage, and said Dave was clear about when the job would start and finish. In a February 2020 review, a customer said the crew opened walls, spray-foamed, drywalled and painted to fix air and sound problems in four days. In an April 2019 review, a customer said a kitchen renovation finished on time and on budget. A May 2022 customer had a new roof put on in the Back Bay.
David is that rare contractor who is not only a great builder but is super responsive and a pleasure to deal with. He was wonderful throughout our deck building project.
Amazing experience with Coolock Construction! Just like magic, they took care of my project with very little notice, were very patient, and worked quickly with the greatest quality. Highly recommended!
Great experience with Dave and his team. Dave and his team repaired our kitchen ceiling and an interior wall after a broken pipe caused significant water damage. Dave was a good communicator (clear on when the project would start and finish), ensured good workmanship and made sure that his team left the jobsite clean / livable for my family. I would hire Coolock again without hesitation - they are sensational!
Amazing work done in a tight time frame. David and his team at Coolock Construction were all very dedicated to getting their work done properly and in a timely fashion. David and each of his employees were very professional and very easy to deal with. There were no time lapses at all between parts of the renovations. David is a pleasure to deal with, and is constantly checking on the work being done. I am so very happy with my renovations, and would absolutely contact Coolock Construction for any future work to be done in my home. I would highly recommend David and Coolock Construction.
I hired David- Coolock Construction four years ago to do work in my condo in the South End... and it was by far the BEST decision! He is as kind and genuine as they come! These are rare qualities. He stands by the work he does, regardless of the size of the project. He is willing to work within your budget and goes the extra mile to fix any problem you be having, even if it's on the weekend or over a holiday. His skills are expansive: bathroom, kitchen, roof work, building closets, staircases, painting, electrical, plumbing, windows, etc. I have hired him, referred him and asked him for his advice more times than I can keep track of... and I'll continue to do so!!!
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Service area
2 changes recorded — last scanned Sep 24, 2026.
Typical Greater Boston range for this kind of work, from regional averages — not a quote from Coolock Construction. Use it to sanity-check bids, then get the real number in writing.
Estimated range
$23,000 – $35,000
Typical remodeling project around $29,000
Languages
Languages
Decks and porches5.0
Clients returning for 10 and 20 years5.0
Detailed craftsmanship5.0
Renovates century-old structures5.0
Whole-room renovations3.8
