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4 reviews

VERY HAPPY With O'Sullivan!!!

Wendy W.

O'Sullivan Installs just replaced 8 regular windows and 1 large bay window in my home. I am so thrilled with the professionalism and talent of the crew! They are meticulous with every detail, no "cutting corners", and they treated the work as if the home were their own. Tim O'Sullivan is very easy to talk with and visited the house twice to talk about the job - once before to measure the windows to be replaced and next as the new windows were being installed. REALLY glad I hired O'Sullivan Installs! Thank you! I will be getting siding soon and now I know who to hire!

Five Stars All Around

Jennifer C.

This is my third time working with Tim and his team, each project bigger. The job entailed working with another vendor for roofing and they coordinated timing. Covid didn’t help the schedule as supply was limited everywhere but Carol Ann kept me updated on the schedule close to weekly. Once we were scheduled, the crew worked like a Toyota line, following each other’s movements. Anatoli and his team onsite were respectful of the property, neighbors and my going in and out. The detail of the work from the corner trim to the bottom caps was meticulous. Another contractor for a different job commented on how well done the work was! Once the siding and trim was complete, the final details of electrical blocks, garage door seals was finished. I couldn’t be happier with the quality of the work and how amazingly different the house looks (100%+ better). The attention to detail that Tim does through his workers and himself show. I had a separate area of the front sided with ‘rock’ and they made sure that I saw what it looked like by hanging samples up so I could decide. That actually made me change my mind to the better of another color. Tim and Anatoli take constructive input seriously. From my concern of trash cleanup to sending and resending staff to finish the work properly, I appreciated being heard. I’ve recommended O’Sullivans many times and will continue to. Thanks to Tim, Anatoli, Brian, Ken and Carol Ann.

Tim O?Sullivan and his crew are the best

Joe L.

For window, door, and siding installs, Tim O?Sullivan and his crew are the best. I won?t go too deep into details, but they installed my insulated siding, new windows (including a bow window), and door. Everything came out great and they did the work in the winter snow. From the start to the finish the crew was on top of it and Tim (the owner) was either on site or communicated every day. They took care of all the little extras and did the minor changes without charging extra or writing up a change order. I can?t praise them enough for their professionalism or excellence.

I would recommend O?Sullivan Installs in a heartbeat

Jim H.

We had a large project to do. We wanted to re-side our whole house, including all the trim. I got 5 bids for the job, and O?Sullivan was in the middle. I chose O?Sullivan due to their excellent reviews on Angie?s List & the fact that we were very comfortable with George, the gentleman who provided the bid, explained all our options, etc. He was upfront about everything, very persistent in getting back to us when we had questions. There were no unknowns when the job began. After meeting Tim, we knew we had made the right choice. Tim & his crew did a super job, in a timely manner. The job was done from around Thanksgiving to just before Xmas. We did not have the best weather, yet the crew worked diligently to get finished before Xmas, working Saturdays & Sundays as well. They ran into various issues & always communicated with us exactly what was going on. Guess the thing that impressed me most was the job cost what they said it would cost, even though we ran into some wood rot issues, that could have cost us thousands more to repair. They ate that cost, providing an excellent solution. Can?t say enough about the great job they did. We constantly get compliments from the neighbors on the great job they did. They kept the site as clean as possible, always tidying up before going home. I would recommend O?Sullivan Installs in a heartbeat. Tim is a super guy as are all his team members.

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5 out of 5
Out of 18 Google Reviews
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Headquarters O'Sullivan Installs

  • 25 Sullivan Rd Unit 5 North Billerica, MA 01862
  • (978) 234-2297