Verified record
JMG Construction Corp is a small general contracting outfit based in Brockton, working out of 67 Blendall St. Its BBB profile names Juan Guaman as owner of the one-employee company, active since 2018. A 2023 Google review said the company was "fantastic to deal with from start to finish" and recommended it specifically for roofing work; Google's own page shows a five-star average. For a straightforward roofing or general-contracting job in the Brockton area, that account points one way — positive. Ask about scheduling and capacity up front, since the crew is a single person.
JMG was fantastic to deal with from start to finish I highly recommend this company for any roofing needs
Typical Greater Boston range for this kind of work, from regional averages — not a quote from JMG Construction Corp. Use it to sanity-check bids, then get the real number in writing.
Estimated range
$23,000 – $35,000
Typical remodeling project around $29,000
Specializes in
Also offers
Service area
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1 change recorded — last scanned Sep 18, 2026.
Roofing and siding5.0
Small siding repairs4.4
Kitchen & bath remodels3.0
State-verified Construction Supervisor license2.7
