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Worcester County – Central Mass – Metro West

What Our Customers Are Saying About Us
G & O Construction Contractors, Inc.
5/ 5 stars

G & O did my garage last year and I was very happy. I had them do my main roof and their workmanship is outstanding. From installing the proper size drip edge to a full length ridge vent they do not cut corners and when done they left my property spotless. I also have a portion of flat roof which requires rubber roofing and that also came out great. With all this I expected they would be the highest price but I found them to be extremely competitive compared to other quotes I got.

Teresa Caron

G and O Construction performs excellent work. We had our roof replaced last week. It looks awesome. They are hands down the best contractors that I have ever dealt with. They are prompt, courteous, and excellent at their profession. The crew was happy to answer any of my questions and meticulously cleaned the site when they left for the day. I highly recommend them!

Carol Szabo

G & O Construction replaced the asphalt shingle roof on my house. Bob Shay, the manager I interacted with came to my house evaluated it holistically. Suggested options and needed improvements to make the new roof a long lasting one. I knew that most of the improvements needed to be done, so Bob did not appear to suggest unneeded things. What was cosmetic only he said he'd throw in for free, just so that he can be happy with the job. Bob is not the guy to hire to do a good enough job. He takes pride in his work and he will either do it right or not at all. The price was reasonable and there were no surprises (the price I paid was the price he quoted). The weather was challenging, but I was flexible on the start date of the project. Nevertheless, once the project was started it was completed within 3 days as promised. It looks great as promised. As a bonus, at the end of each day my yard looked as if no work was in progress, all trash picked up. G &O protected my flower beds around the house, no damage. The crew was very professional and nice to work with.

Judie Newton

Great work. Had to install on the hottest day this summer. No complaints from crew. Crew were efficient quick and great job! Had a hard time finding roofer got the run around “we’ll be there tomorrow to give you a quote many promise never showed” G & O showed up in one day fair quote did job when I requested. So obviously would highly recommend Love my new roof!

Danielle Gallivan

G&O did an unbelievable job on my deck, I did not expect how big and beautiful it would be when I came home! I have privacy now and it’s absolutely beautiful a true sanctuary for when I get home... if you need some residential carpentry or a deck please call G&O they will surpass your expectations! Nick also did a remodel of my kitchen in Millbury and it was absolutely gorgeous!

Katie Penny

G&O did an unbelievable job on my deck, I did not expect how big and beautiful it would be when I came home! I have privacy now and it’s absolutely beautiful a true sanctuary for when I get home... if you need some residential carpentry or a deck please call G&O they will surpass your expectations! Nick also did a remodel of my kitchen in Millbury and it was absolutely gorgeous!

Maria Sands

So refreshing to have a contractor that follows through with what was promised. The quality of work is superior. I had a total gut of a bathroom down to the studs 3 years ago and a harddwood floor installed in my kitchen. We also had outside work done a month ago. Very soon we will be doing a half bath and remodel to our kitchen. Can't say enough!! Thanks Nick, Pete, and Danny

Tracy Thomason

These guys did my roof for my business. Not only were they professional, they were fast. I have a business it stays busy and they even did it at a time when I was closed so it wouldn't interrupt my business EVERYONE that I contacted were quoting me 2 weeks. Mine was done in a weekend and They came back the next weekend for some final trim pieces. They worked the cheapest but I would a pay 20% more to have that kind of service don't tell them I said that.... The roof that I had on my building was old and I could not be happier with the performance and quality of the roof. The reason I'm writing this review 6 months after they did the roof is because I was extremely impressed with the fact that the owners came out recently inspected the roof to make sure that everything was OK. Take my word ... I have had badd contractors and now I will never use anyone else but.

Sarah Picard

G & O just replaced the roof of my house over the last 2 days and in the middle of this humid heatwave. They showed up at 7 on the dot like they said they would and worked well beyond the time they should have in this heat. After the first day upon leaving they cleaned everything up like they were completely finished with the project. There wasn't a nail, piece of shingle, ladder or tarp left out. This is so impressive since our in ground pool is just a few feet from the house and not a single thing fell in. The crew worked hard and quickly and the craftsmanship was amazing, the heat didn't slow them down a bit or change the quality of their work. They were so respectful and professional, I could not recommend them enough. The roof looks amazing and I look forward to working with them on future projects.

Greg Root

G&O were prompt, responsive and finished the job professionally and in a timely way. From laborer to owner, every person was pleasant and very interested in making sure I was happy with the work. Many homeowners have to chase down contractors to finish the job, but not so with this company. They have easily been the easiest to work with contractor I have hired.

Meet Co-Owner Nick Oliveri Below
Call him directly at 508-450-4316 for a talk about your roof

Call G&O Construction's owner Nick Oliveri pictured above. Nick grew up in Worcester and is raising his own family in the area today. An experienced roofer himself, Nick now oversee the Roofing Division team of G&O. Call him directly at 508-450-4316 to receive advice on your project and to schedule a time for your free estimate

Our Achievements Below

Our Team Helping Your Property

  • Over 25 Years of Roofing Experience
  • Capable of any sized Residential or commercial Roof
  • A+ Better Business Bureau accredited business
  • 5 Star Online Ratings
  • Licensed, Insured, Bonded
  • Competitive Pricing

We Roof Homes & Commercial Properties in the following areas

Interested in a Price to Replace your Roof?

Write us below with some details and you’ll hear from someone very soon

A Proven & Awarded Roofing Company

G & O Construction is Worcester County's leading roofing company. The reason is because when you work with us you work directly with the company owners who began their careers in the roofing industry. Our projects span Worcester county into the Metro West including Westborough, Shrewsbury, Northborough and Westborough. The residents within these towns know that there is a difference in roofing companies and G&O is their preferred roofer because of this. Although our capabilities and products are of the highest quality, we pride ourselves on being competitively priced, working with home owners with any budget.


  • Residential Repairs & Replacements

    We service all materials including asphalt, slate, rubber roofs and custom builds

  • Commercial Roofing

    We are no throughtout the area by the business community for being the preferred roofing company for commercial projects

  • Roof Repairs
  • Installations
  • Speciality Projects

    Historic Homes and Buildings. Large commercial projects including falt rubber roofs we have the knowledge, equipment and team for these special jobs.

  • Carpentry

    we are licensed general contractors, if your roof has additional issues.