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Typical your area range for this kind of work, from regional averages — not a quote from J.C. TONNOTTI WINDOW COMPANY. Use it to sanity-check bids, then get the real number in writing.
Estimated range
$4,000 – $11,000
Typical exterior project around $7,500
Fourteen double hung windows, a french double door and two storm doors went in for one August 2026 customer of J.C. Tonnotti Window Company, with Luke handling the consultation and an eight-person crew on the install. The Southington, Connecticut company does windows first, then doors, siding and roofing, and it holds 4.8 stars from 331 ratings on Google; a trade magazine profile says it was founded in Southington in 1999. Repeat customers describe the range. A June 2026 reviewer, hiring the company for the fourth time, had a 27-year-old roof stripped to the plywood and replaced in a single day of almost 11 hours, after earlier jobs on a patio door and several windows. In April 2026, a customer whose rotting roof was collapsing into an unused room had it replaced in one day and a load bearing beam replaced the next. A June 2026 customer had 28 windows and an exterior door replaced in Clinton, CT. In July 2026, the company sourced and installed a custom large atrium window after its seal failed. A May 2026 customer's 15-year-old Harvey window was fixed by Lucas in 10 minutes. A June 2026 reviewer said Joe gave a reasonable quote without cutting the price every hour to push a quick signing, though the windows took a little longer to make than expected. The complaints are about getting a quote. In a 1-star September 2026 review, a customer said it took more than three weeks for someone to come out, that Ava refused to give a written breakdown, and that installation had a 12-week lead time. A January 2025 customer waited about three weeks for an email reply and then had an appointment no-show. An undated BBB review also says the company refused to give a written quote. Its Connecticut HIC licence, HIC.0614190, is active on the state registry. BBB grades it A+.
“They founded Southington, Conn.’s, J.C. Tonnotti Window Co. in 1999 and have worked side-by-side ever since.”
We have used JC Tonnotti three times now - once to replace an old roof with leaking skylight, the 2nd time to replace a damaged gutter and most recently for new windows in our home. Each time, they were responsive, professional, and thorough. Their prices are fair, lower than many other companies, but still with the service behind the product you'd expect to come with a premium price tag. Every employee we encountered was friendly and knowledgable. They answered our questions, addressed all of our concerns, and left the job site clean behind them. I highly recommend JC Tonnotti.
JC Tonnotti was professional from the start. Install was seamless and the installers were prompt and efficient.
I recently had all of my replacement windows and sliding doors installed by J.C. Tonnotti Window Company, and I couldn’t be happier with the experience! I own a condo at Clearview Condominiums in Wolcott, CT, and from start to finish, the entire process was excellent. The installation crew was professional, courteous, efficient, and extremely respectful of my home. What impressed me most was how clean they were. They worked all day, yet when they finished, you would never have known they had been there. Everything was cleaned up and left absolutely immaculate. I absolutely love my new windows and sliding doors! They look beautiful, and I am very happy with the quality of the work. I would highly recommend J.C. Tonnotti Window Company to anyone looking for quality windows, sliding doors, and professional installation. Great company and an excellent crew! Rosa
It took them more than three weeks to send someone to my home for a window quote. The experience was not great - no transparency in pricing, and the quote just seemed random, as Ava refused to provide a written breakdown. They also have a 12-week lead time for installation. When they followed up, there was a huge lack of professionalism and customer service. 10/10 would NOT recommend working with Ava. Check the Yelp reviews before moving forward with them.
I highly recommend J.C. Tonnotti Window Co.! It was so nice working with a very professional group of people. They all treat you and your home with respect. The price was very fair, and the outcome was absolutely beautiful. It was such a pleasure to meet Mike, Shane and Chris. Each one of them is a true craftsmen! I will definitely work with them on different projects.
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Certified attributes are verified against the public registry. Others are the business's own statement.
1 change recorded — last scanned Oct 14, 2026.
One-day roof replacements5.0
Deck builds5.0
Roof replacement finished in one day4.9
Crew replaced a roof in one day4.3
Siding jobs finished ahead of schedule4.4
Gutter guards quoted affordably and installed4.0