Stateline Masonry & Waterproofing

Stateline Masonry & Waterproofing is a Waltham outfit run by William (sometimes working alongside Denis), with a written record built almost entirely around one voice: dozens of reviewers thank him by name for foundation, chimney, and masonry work across the Boston area. Its Massachusetts home improvement contractor registration is active. In reviews spanning 2024 and 2025, the pattern is consistent: cracked foundations sealed and waterproofed, sometimes paired with a new French drain; chimneys rebuilt crown-to-cap over a day and a half of work; stone facades and brick walls repointed to look 'brand new'; and, in a 2024 review, a fieldstone foundation leak fixed by grinding out loose joints, tuckpointing, and waterproofing the exterior after excavation. Pricing comes up often and favorably — one 2025 review said Stateline came in lowest after the homeowner got five separate estimates, and several others describe quotes that beat competitors. One clear exception stands out. In a February 2025 review, a customer described the opposite experience: only half the agreed work completed, a price that 'skyrocketed' partway through, and calls that went unanswered — calling the company scammers. It's the only negative account in an otherwise long, consistent run of praise, but it's a serious one worth asking about directly, including getting the full scope and price locked down in writing before work starts. This is a fit for foundation, chimney, and masonry repair specifically — cracks, waterproofing, repointing, retaining walls — with William personally involved on most jobs; get everything in writing given the one sharply different account on file.