Verified record
Cebula's Flow Right Seamless installs seamless gutters and downspouts. A 2025 customer said John Cebula installed seamless gutters and downspouts on the main part of the house in 2023, laid out several options and explained the differences, then completed the work in one day, all by himself. That 2025 customer said he charged no deposit and took payment when the job was done. The same 2025 review described a later visit: the downspout had clogged with pine needles and dirt, John called back within 48 hours, came out, found the problem areas and cleaned the system free of charge. That customer wrote that he kept his word on the "20 year guarantee on labor" in the original contract. A 2020 customer said John Cebula was the only one who called back, showed up on schedule and did the gutter install professionally. A 2018 customer said Cebulas was the only business out of 6 quotes that impressed them, showed up on time and ran through gutter materials, hardware and samples, and called the pricing fair. A 2020 customer said that after an estimate they were told the work would be a couple of weeks out, and when they called five weeks later they were told someone would come the next day, but no one showed up or called.
Typical Greater Boston range for this kind of work, from regional averages — not a quote from Cebula's Flow Right Seamless. 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
John Cebula installed seamless gutters and downspouts on the main part of my house back in July 2023. He provided several options and explained the differences to me clearly and patiently. After we agreed on the plan and pricing, he completed the work in one day, all by himself. He didn't charge any deposit and accepted the payment on job completion. He was punctual and reliable. I'm writing this review after two years of the job. The system has worked really well without any issues in the past two years and I haven't cleaned the gutters during this period. Just recently I noticed some clogs in part of the gutters. I left a message and John called back within 48 hours. Then he came out two days later and examined the gutters. It turned out that the downspout was clogged by chunks of pine needles and dirt (there are many pine trees in my backyard and tons of pine needles tend to make their way onto my roof and gutters). John found the problem areas and cleaned the system. And guess what, free of charge. On his original work contract, he promised "20 year guarantee on labor." He kept his word! I'm really impressed. We need more honest and hardworking contractors like Mr. Cebula! Highly recommend him!
They took forever to call back, eventually came for an estimate. Told me it would be a couple weeks. 5 weeks later, I called, was told they would be there the next day. Never showed up or called. Waste of time for no results!
Recently had gutters installed on our house. John Cebula was the only one who called back - everyone else, including him, were busy. He showed up on schedule and the job was professionally done! He even helped out with other advice on the house. He is a definitely worth hiring.
Quality work and fair pricing. Cebulas was the only business out of 6 quotes that showed up to my house that I was impressed with. Showed up on time and ran me through the whole process, gutter materials, hardware used, samples, etc. They look great and work even better.
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2 changes recorded — last scanned Oct 1, 2026.
Handles custom glass jobs4.3
Gutters working during heavy rain4.2
Next-morning estimate visit3.5