Verified record
Typical Greater Boston range for this kind of work, from regional averages — not a quote from Evans Home Improvement. 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
A customer wrote in November 2025 that they had been coming back to Evans Home Improvement for 30 years — windows, storm windows, patio doors. That is the shape of this Cohasset company: founded in 1957 by Frank Evans Sr., run now by his sons Larry and Rich with their sister Rosemary O'Connell on HR and accounting, and BBB-accredited since 6/1/1962. It covers the South Shore — Cohasset, Scituate, Marshfield, Hingham and The Pinehills, by its own account. Sunrooms and porch conversions are what people write about. A September 2025 customer's three-season room was designed exactly as they had envisioned it, started and finished on time; a November 2025 reviewer said theirs added pleasure and value to the house, after an estimate they called straightforward. In June 2025, a homeowner converting a screen porch into a four-season room described two courteous workmen who left the construction clean and tidy each day. The window and door side runs just as long. A June 2025 customer had every window in the house replaced and called it quality workmanship at a reasonable price; in January 2026, Rich came out to look at a patio door that needed replacing and steered the owners to a style that suited the space. An April 2025 reviewer who has done their entire house over — doors, windows, roofing — described work delivered on time, long lasting and competitively priced, and a May 2025 customer pointed to installers who have been with the company for decades. Three older accounts are worth knowing about. In March 2019, a customer came home on the second day of a job to find the installers inside the house without permission; when they objected, the reply was that a window was open. A November 2018 project ran a bit longer than anticipated, though that customer was satisfied with the workmanship. And in June 2020 a homeowner said they wished they had gone with a contractor who builds in wood rather than prefabricated metal panels — while adding that this was not the company's fault. For a sunroom, a porch enclosure, or a window and door replacement on the South Shore, this is a long-running family shop whose Massachusetts home improvement contractor registration is active on the state registry. Settle what your room will actually be framed and panelled in before you sign, and agree who has access to the house on the days the crew is working.
great experience over the years
Very happy with this company. They were responsive, quick ,and helpful in every way. Also happy with the product.
We had Rich come out to take a look at our patio door that needed to be replaced. We discussed what we wanted and he actually knew what the replacement should be. He helped us with a style that would best fit in the space and home. His crew were exceptional. So polite and professional. Would hire the Evans Home Improvement Group in a heartbeat. PS.. My Mom hired Rich's Dad 50-60 years ago. I always remember how my Mom and Dad would over the years praise the exceptional job he did. He replaced their windows and siding that I can recall. I did not know who to call for our patio door, in the back of my mind I thought of the Evan's Company. I googled the Evan Home Improvement Company and to my surprise they were still in business. BEST DISCUSSION EVER!!!
Over the last 30 years I've returned over and over to Evans Home Improvement for windows, storm windows, patio doors. They've been super reliable, done top quality work, and offered excellent advice to meet my budget and needs.
Straightforward estimate and logistics. Polite, friendly, considerate crew. Great attention to detail. Our three season room has added so much pleasure and value to our house.!
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Certified attributes are verified against the public registry. Others are the business's own statement.
4 changes recorded — last scanned Sep 6, 2026.
Sunroom installations3.5
Warranty follow-through5.0
Next-day response after storms5.0
Caught a hidden attic mold problem other roofers missed5.0
Deck and porch rebuilds4.8
State-verified licenseNot yet rated