Division One Masonry & Waterproofing

Massachusetts has no foundation-contractor license, but the contractor needs Home Improvement Contractor (HIC) registration, and structural work requires a Construction Supervisor License (CSL) and a building permit from the Brookline Building Department. Significant structural repair, piers, wall rebuild, or underpinning, requires drawings stamped by a registered Professional Engineer. Brookline has local historic districts (Cottage Farm, Pill Hill, Graffam-McKay) where visible exterior work draws review. Exterior excavation, regrading, or drainage near the Muddy River and the Riverway can fall under Conservation Commission jurisdiction through the Wetlands Protection Act.

Brookline foundation pricing runs near the top of the state, reflecting affluent-town labor rates, large old houses, and tight access. Crack injection typically runs $400-$900 per crack. An interior perimeter French drain with a sump pump lands around $9,000-$20,000 depending on linear feet, with the big basements under Brookline Victorians at the upper end. A sump pump install is usually $1,200-$3,000, more with battery backup. Stabilizing a bowing stone or brick wall with carbon-fiber or steel runs $5,000-$12,000, and exterior excavation with membrane waterproofing starts around $15,000 and climbs.

Massachusetts requires a written contract and a Home Improvement Contractor registration for most residential foundation repair & waterproofing work; ask for the registration number and check it before paying a deposit.

More on permits, costs, rebates and common questions, plus every other foundation repair & waterproofing contractor serving the town, on the Foundation Repair / Waterproofing in Brookline page.