Basement Waterproofing Cost in 94401 (San Mateo, CA) — 2026 Pricing
Homeowners in zip code 94401 pay $2,000–$15,000 for basement waterproofing. Interior systems from $2,000; exterior excavation $8,000–$15,000. Get your free quote today.
$2,000–$15,000
Basement Waterproofing in 94401 • Updated July 2026
Basement Waterproofing in Zip Code 94401
Professional basement waterproofing with interior and exterior drainage systems, sump pump installation, foundation sealing, and moisture barrier installation to permanently stop water intrusion. Our licensed contractors provide fast, reliable service throughout the 94401 area in San Mateo, San Mateo County.
Call (916) 476-7689 for an immediate quote or fill out the form below for a detailed estimate.