G&O Construction & Roofing is a full service general contractor in Worcester, Massachusetts specializing in custom home construction, residential and commercial roof installation, repair and roof replacement, siding replacement, door and window replacement, basement finishing and remodeling as well as commercial parking lot snow plowing, sanding, salting, walkway clearing, private road plowing and roof raking/roof snow removal for homes and businesses in Worcester County, Massachusetts: Middlesex County & The Boston Metropolitan Area.

Contact Details

  City Worcester, MA
  Zip Code 01604
  Address 9 Billow St
  Phone Number (800) 778-4640

Products & Services


G&O Construction & Roofing is one of the most experenced residential and commercial roofing companies in Massachusetts specializing in roof replacement services for the full spectrum of roofing mediums.


Vinyl Siding Specialist
Metal Siding Services
Insulated Siding
Stone Exteriors/Veneer
Cedar Shakes/Boards
Wood Siding
Fiber Cement Siding
Stucco Installation
Brick Masonry Service
Engineered Wood


Double Hung Windows
Single Hung Windows
Awning Windows
Picture Windows
Bow & Garden Windows
Bay Window Installation
Casement Windows
Horizontal Sliders
Bow Windows
Skylight Installation

Door Installation & Door Replacement

G&O Construction & Roofing is one of the most experenced residential and commercial door replacement companies in Massachusetts providing the highest quality door installation and door replacement services.


G&O Construction & Roofing is one of the most experienced gutter and downspout replacement contractors specializing in leaf-free gutters to ensure our customers will never have to clean out their gutters ever again.

Custom Home Construction

G&O Construction has a long proven track record of excellence and strives to be the one of the most highly trusted names in the Custom Home Construction Industry.


Interior Remodeling
Kitchen Remodeling
Basement Finishing
Roof Replacement
In-Law Suite Construction
Exterior Home Remodeling
Bathroom Remodeling
Home Additions
Siding Replacement
Historic Restorations

  • I would recommend this business

We hired G&O to replace a steep, complex, and very high roof on our old 3-story Victorian home. Unlike 2 other roofers we received estimates from, they informed us that we could make an insurance claim for shingle "blow-off," which we didn't realize was covered. They also provided a private adjuster who successfully negotiated with the insurance company to pay the cost of a better quality roof than they had originally agreed to. It then took a while to get town permits and begin the job, but we were extremely impressed by the workmen and their quality of work. They were true craftsmen and a pleasure to have working for us. They cleaned up every day, did not use scaffolding, lifts, or dumpsters, and left no debris on site. The finished roof looks fabulous. We have had numerous experiences with roofers in the past, but G&O was in a class of its own, far above all others. They are expensive, but well worth the price - especially with the help of insurance coverage.

Value for money
Service & support
Overall ratingExcellent

  • I would recommend this business

We had our roof done by someone else several years ago. It was a terrible job, the shingles deteriorated early and we couldn't claim against the warranty because it was installed incorrectly.

G&O helped us understand what was done wrong, gave us a good price, and did an outstanding job on the roof. Beautiful shingles, copper valleys, it looks gorgeous. The crew was fast, polite and cleaned up every night. I wish I had more roofs for them to do!

Value for money
Service & support
Overall ratingExcellent

  • I would recommend this business

G &O repaired many slate tiles on my roof. They did an outstanding job of matching the tiles. Great experience - completed the job quickly & at a reasonable price!

Would highly recommend!

Value for money
Service & support
Overall ratingExcellent

Customer Testimonials

I was very happy with the roof job done by G & O construction. They were professional and timely. When work was done everything was cleaned up so you never even knew they had been there. I just recommended them to a good friend and I am sure she will be as happy with their work as I am.

Outstanding customer service!! Everything was explained step by step!! The crew showed up on time and worked extremely hard. At the end of the day... you would never know they were even there! Every nail and piece of debris was picked up. (Very important when you have pets.)!!!
G and O Construction took care of all the foot work such as permits and inspections. My new roof is spectacular !!!! Could not be happier! The price was affordable and they are Insured!!! It was so nice to call them with what I wanted and they got the job done!

We highly recommend G&O! They replaced our roof in Cambridge, MA, on a home over 100 years old which had over the years multiple layers installed over prior layers (total 4 layers of asphalt shingles and 5 layers where the rubber roof is over back flat part of house). The roof had been neglected over the past number of years with leakage and extensive wood rot resulting (in addition to birds and squirrels nesting). We also had a chimney that was crumbling.We were fortunate to find G&O - they were professional, took time to explain, their pricing was competitive - and their quality of work far surpasses others - true masters.

They immediately came during the winter to tarp over an active leak and tighten other defects until the roof could be redone in favorable weather (no one else did this - other quotes we had all came and said they would do the work in the spring ). Our job entailed rebuild of chimney, taking off all the old layers, repair extensive rot, rebuild a dormer, install 2 windows, install the asphalt shingles and the rubber roof. Being in the city, the houses are close and G&O received high praises from our neighbors - that G&O were courteous and respectful - notably G&O built staging to protect our neighbor's fence, tree, flowers. After the work was done - the clean-up was impeccable - you would never had known they were there (except of course that the house looks amazing).

I also need to say that we have never had better communication with any other contractor - Bob, Fred and Nick would call/text/email with updates and send pictures. When the job was completed - we actually missed the guys - for real, G&O is beyond 5 stars - we had a great experience and we will call them to do all future work for us.

From Our Website

G&O Construction is one of the most trusted custom kitchen remodeling contractors in Worcester County, Massachusetts: Middlesex County & The Boston Metropolitan Area. With over 25 years of experience, G&O Construction employs some of the finest craftsman with an artistic flair and has successfully remodeled hundreds of kitchens in The Bay State with some of the most intricate design features. G&O Construction is one of the most experienced kitchen remodeling companies in Massachusetts providing the highest quality products in tandem with expert design/installation services for every remodeling project.

G&O Construction specializes in interior/exterior door replacement including front/back doors, side doors, sliding glass doors, bulkhead doors and is complete adept at painting or staining, sanding, sander/sealer and polyurethe for finishing as well as baseboard/trim replacement services. G&O Construction has over 25 years of experience hanging new doors including exterior storm doors, glass doors and garage doors. Since inception, G&O Construction has helped hundreds of customer hang new doors throughout their entire home.

G&O Construction is one of the most experienced window replacement companies in Massachusetts providing the cheapest, most affordable rates for the highest quality door/window replacement as well as residential and commercial door installation. Do you need a new front door? G&O Construction can help you choose the right front door for your home as well as sliding glass doors, door staining, sanding, sealing and polyurethane finishing. G&O Construction & Roofing is a full service contractors providing the highest level of customer service.

G&O Construction is one of the most trusted general contractors in Massachusetts specializing in ADA Compliant Wheelchair Lift Installation & Wheelchair Ramp Construction for homes and business throughout The Commonwealth of Massachusetts. Owner, Nick Oliveri has over 25 years of experience providing the highest quality products coupled with first-in-class customer service. G&O Construction provides complete ADA Handicapped Accessible Ramp Installation Services For Residential and Commercial Properties Throughout The Commonwealth of Massachusetts and fellow New England States.

G&O Construction & Roofing is one of the best home addition design/construction contractors in Worcester, Massachusetts and serving all of Worcester County, Middlesex County & Suffolk County, Massachusetts. G&O Construction is family owned/operated and provides the cheapest, most affordable home addition construction as one of the most prolific custom home addition builders in Central Massachusetts. G&O Construction rarely uses sub-contractors and employs only the most highly experienced carpenters and tradesmen with and artisan quality for the most appealing finished products.