C. Costello Masonry Inc.

A previous contractor had patched the aged brick of a Brownstone fireplace with patio pavers. When the homeowner called Colm Costello in June 2026, he took the mismatched pavers back out and put the interior right. That is the sort of job C. Costello Masonry gets called for: old Boston houses, where new work has to disappear into what is already there. Costello runs the company himself. He says he began his stonework career more than twenty years ago in western Ireland and started the business after moving to the Boston area over sixteen years ago; the work is masonry, chimneys and historical restoration inside roughly a twenty-mile radius of the city, with Brookline, Newton, Watertown, Belmont, Cambridge, Somerville, Chelsea, South Boston and Beacon Hill named on its own site. Its Massachusetts home improvement contractor registration is active. Chimneys come up constantly in what customers describe. In February 2026 one had a chimney ground and repointed, flues added at the top and the lead flashing replaced, and said the crew was on time and clean. A March 2026 customer had a chimney rebuilt and a wood-burning insert fitted in an old house where complications duly appeared; he had picked Colm over a cheaper bid from a bigger company and said he was glad of it. In May 2026 another had creosote cleared that an earlier sweep had left behind. The rest of the work runs from front steps to structure. A July 2026 reviewer in the Parkway area called him first for a new granite staircase after watching his crews on other local jobs, and got an estimate quickly. In November 2024 a homeowner in a 115-year-old West Roxbury house described a chimney rebuild with everything documented in a contract; that August, another had a retaining wall built and the yard left level and clear of debris. Back in January 2023, customers described repointing an old stone foundation and replacing a garage floor with new drainage. Cleanup is the other thing reviewers keep returning to — the property swept at the end of each day, the surroundings left immaculate. Across 28 Google ratings the average is 5 stars, and the Better Business Bureau grades the company A+ without accrediting it. If your house is old and the masonry has to match — a chimney, a brownstone facade, granite steps, a stone foundation — this is a call worth making. Ask about lead times, since the owner is on the jobs himself, and get the scope written into the contract the way his November 2024 customer did.