McGowan Custom Builders

McGowan Custom Builders is a Charlestown-based custom residential builder and general contractor, working mid/high-end remodels and additions in the $100k–$1M range. Tim McGowan, who started the company in 2017, runs it day to day alongside a small team — project managers Kristina McKenna and Joe Giardina, and site supervisor Denny Diniz. A public building-permit tracker shows McGowan has filed 102 Boston permits since 2013, closing 65% of the 77 that have been rated — a rate the tracker puts 14.9 points above the city median. For a mid- to high-end remodel or addition in Charlestown, this is a contractor with an above-average permit-completion record and a small, named project team overseeing the work.