JM Electrical Services, LLC

JM Electrical Services is a small Rockland, Massachusetts outfit run by owner Marco James Sylvester, registered since 2018 and doing electrical work across the South Shore under its Associated Subcontractors of Massachusetts and Procore listings. The one outside account that surfaced is recent and specific: a homeowner whose power line came down in May 2026 says JM Electric had electricity back on within two hours of the call, calling the response worth recommending without reservation. That single review is backed by an A+ Better Business Bureau rating, though the company is not BBB-accredited, and BBB's own page shows no customer reviews or complaints of its own to weigh against it. One thing worth asking about: a subcontractor-payment tracking site grades its on-time-payment history a middling C, even while ranking it in the top 40% of small U.S. contractors by job volume over the past year — a note on how it pays its own subs and vendors, not on the quality of finished electrical work. With only one public review of the actual work, this reads as a capable, responsive outfit for an emergency call rather than a business with a long, provable track record — worth a look for a fast repair, but ask for references before handing over a bigger job.