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B.L. Mosher Construction, run by Bert Mosher, is a South Dennis roofing and siding contractor with a long permit history on file — BuildZoom shows 36 permitted roofing and siding jobs, mostly in the Yarmouth villages. The one written review on record, from 2013, praises fast, high-quality work at a fair price and calls Bert reliable and professional, saying he shows up when he says he will. There's no more recent customer feedback to weigh against that account. Worth knowing before calling: every Massachusetts license the state registry and BuildZoom show for this company — a construction-supervisor specialty registration and three separate Home Improvement Contractor numbers, including HIC #206480 — is listed inactive or expired, the most recent lapsing in 2013. Confirm current licensing and insurance directly before hiring.
Excellent Service, very fast and great quality.Only recomends what needs to be done. Very fair price. Best quality about Bert is he is an American and has the proper licenses and insurance. He shows up and does the job when he tells you he will and has been around for a long time. Thanks Bert for your professionalism.
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1 change recorded — last scanned Sep 30, 2026.
Typical Greater Boston range for this kind of work, from regional averages — not a quote from B.L. Mosher Construction. 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
Root-cause repairs5.0
Repair specialist5.0
Whole-house jobs of 14 to 30+ windows5.0
Historic restoration expertise5.0
Praised for a kitchen and bath remodel3.5
Deck rebuild and wheelchair ramp in days3.2
Mass Save expertise4.6
