Boston Irish Construction LLC

Boston Irish Construction LLC is a Boston-based general contractor run by CEO Cathal Crossan, doing design-build renovation work — carpentry, electrical, plumbing, roofing, plaster, and water-damage repair — across Cambridge, Brookline, Back Bay, and the surrounding neighborhoods. Its Massachusetts home improvement contractor registration has expired, according to the state registry. Every review on file names Cathal directly and tells largely the same story: communicative, hands-on, and precise. In 2025 reviews, customers described a patio rebuilt into a covered deck, window and wood-floor replacement at a commercial space, a full wood-floor install delivered on budget, a three-story deck reconstruction paired with roof and ceiling repair work, and a century-old Brookline home's complete electrical rewiring alongside extensive plaster repair. One 2025 reviewer described Cathal responding immediately to water damage in a child's bedroom and stopping it from spreading; another, a subcontracted plumber, said every job with Cathal ran smoothly and efficiently across several of his projects. Larger work turns up too — a full renovation of the common areas across two adjoining Back Bay brownstones, and a condo project brought in on time and on budget with the crew reportedly offering ideas and extra touches the client hadn't asked for. The one thing worth knowing before calling: the state's home improvement contractor registry shows this business's license as expired. Nothing else about the work itself raises a concern — every review is five stars, spanning trades from plumbing to plaster to roofing, with Cathal named specifically for communication and honesty in nearly all of them. For a Boston-area renovation that spans multiple trades — especially one needing a general contractor who's hands-on with electrical, carpentry, and finish work together — this is a business with consistently detailed, positive reviews; just confirm the license is current before signing anything.