William E Hayes

William E Hayes leaves almost no public trail. BuildZoom's file on the Winthrop builder holds exactly two permits, and both are older commercial Boston jobs rather than house work: an emergency masonry foundation repair at 31 Stuart St in 2013, valued at $50,000, and a 2011 certificate of occupancy for an 86-apartment mixed-use building on Atlantic Ave. Nobody has written a review. BuildZoom scores the profile 90, but the site is explicit that the number only means he turns up as licensed or registered and it has nothing further on him. The licence entries are the thing to look at closely. BuildZoom lists Massachusetts construction supervisor licence CS-046555 twice — once as verified and active as of July 2026, and once as inactive, noting the Department of Public Safety showed it cancelled at some point. The directory contradicts itself on the same number, so neither entry settles the question. If you're considering him, get the current CS number directly and check it against the Department of Public Safety yourself, and ask for references from residential work, since the two documented jobs are both commercial.