Matthew Corso Plumbing & Heating Company

The permits tell you who this shop really works for: restaurant fit-outs, warehouse plumbing, multi-unit buildings. Matthew Corso Plumbing & Heating Company, run out of Haverhill by Matthew E. Corso, has 112 permitted projects on record, and the typical one runs about $22,500 — commercial plumbing, gas and mechanical work across eastern Massachusetts. That scale matters for a homeowner. A crew whose bread and butter is a burrito-shop fit-out or a fifty-unit building's waste and vent piping is not the same as the van that shows up for a leaking hose bib, and the fit for a small residential job is worth asking about directly. On licensing, take the profile at exactly its word. BuildZoom lists a Massachusetts plumbing business license, number 3805, showing active with a May 2026 expiration, along with two other entries carrying May 2016 dates — none of it registry-confirmed on our end. The same page also shows a plumber license, number 9966, as inactive and at one point cancelled. Overlapping numbers with different statuses on one directory page is a reason to ask for the current license directly, not a verdict. No one has reviewed the company on BuildZoom, so there is no customer account of how the work went, how estimates held up, or how they handle a callback. Worth a call for larger plumbing, gas or mechanical work, particularly commercial or new-construction scope where the permit history is real and deep. Before hiring, ask Corso for the current license number and insurance certificates, and for a couple of recent jobs at your project's size that you can check on.