John A Penney & Co

John A Penney & Co is a Cambridge electrical engineering and construction firm that's been doing business since 1973, under its current ownership since 1988 — the company describes itself as having 50 years in continuous operation. It works mostly on commercial, institutional, life-science, and tenant fit-out projects rather than residential jobs, and recently became a division of Sullivan & McLaughlin (SullyMac), though the company says its projects and team haven't changed as a result. Under its founder, John Penney, who died in 2019, the firm was described in a 2019 industry obituary as one of the most prolific electrical construction companies in the Northeast. It carries an active Massachusetts electrician license, holds NECA membership and IBEW Local 103 signatory status, and its BBB profile shows an A+ grade — though the business isn't BBB-accredited and the page lists no customer reviews or complaint count. Google shows a 4.2★ average from 5 ratings. Between the firm's fifty-plus year run, its industry credentials, and the recent SullyMac transition, this reads as an established commercial electrical contractor more than a residential service call — worth confirming before reaching out for anything outside institutional or commercial work.