DM Construction Costum Design

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 Malden Inspectional Services Department. Significant structural repair, piers, wall rebuild, or underpinning, requires drawings stamped by a registered Professional Engineer. Malden's tight lots push most waterproofing inside, since there is rarely room to excavate against a neighbor. Exterior work near the Malden River or Spot Pond Brook can fall under Conservation Commission jurisdiction through the Wetlands Protection Act.

Malden foundation pricing runs in the upper greater-Boston range, reflecting density and limited access. Crack injection typically runs $400-$900 per crack. An interior perimeter French drain with a sump pump lands around $8,000-$18,000 depending on linear feet, with full triple-decker basements at the upper end. A sump pump install is usually $1,200-$3,000, more with battery backup. Stabilizing a bowing brick or fieldstone wall with carbon-fiber or steel runs $5,000-$12,000. Exterior excavation is rarely practical on the tight lots, so interior systems dominate.

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 Malden page.