Lawrence, MA Environmental Rules: Flood Elevation Requirements (2026)

050's anchoring and construction-material standards. 050 layers general construction standards on top of the elevation rule: all new construction and substantial improvements in zone A/AE must be anchored to prevent flotation, collapse or lateral movement, built with flood-damage-resistant materials and methods, and served by water and sewage systems designed to minimize floodwater infiltration. 040(D) requires the building commissioner to review whatever elevation data the applicant obtains to determine reasonable use toward meeting the elevation or floodproofing requirement. 040(E): stands or lots must be elevated on compacted fill or pilings so the home's lowest floor sits at or above the base flood level, with specific anchoring tie-down requirements including components rated to carry 4,800 pounds of force.