Matthew Corso Plumbing & Heating Company

Matthew Corso's Haverhill plumbing company has built a documented track record of 112 permitted projects — largely commercial work: restaurants, warehouses, multi-unit buildings — spread across eastern Massachusetts, at a typical permit value around $22,500. Its Massachusetts Plumbing Business license, 3805-PL-C, is active, registered to Corso Plumbing & Heating Inc. BuildZoom, which tracks that permit history, also lists two older Massachusetts plumbing license numbers under Matthew Corso's own name — a Master Plumber license, #9966, and #19157 — both carrying a May 2016 expiration date. This looks like a strong match for commercial plumbing or a larger permitted job. For a routine home repair, it's worth asking directly whether they take on smaller residential work and confirming current licensing before booking.