Basement Waterproofing Cost in Boston (2026)
Average cost in Boston
US$2,450 — US$15,000
US$4 — US$12 per sq ft
Cost Breakdown
ItemizedSkilled waterproofing contractors and excavation
45%
Sealants, membranes, and drainage pipes
35%
Excavation machinery and pump rentals
10%
Boston municipal building permits
5%
Debris removal and site restoration
5%
Sales Tax at 6.25%
📋What's Included
ScopeTypically Includes
- Interior drain tile system
- Sump pump installation
- Vapor barrier
- Crack injection sealing
- Labor
Typically Excludes
- Exterior excavation waterproofing
- Foundation repair
- Mold remediation
- Dehumidifier
- Landscaping restoration
Based on interior waterproofing for a standard 800-1,000 sq ft basement.
🧮Estimate Your Cost
InteractiveEstimated Cost
US$7,168 — US$10,752
Based on 8 sources and market data for Boston. Actual costs may vary depending on specific project requirements.
📈Price Momentum
Year-over-year~1 year ago
US$5,483
Today
US$5,730
Basement Waterproofing in Boston is ↑ 4.5% compared to roughly a year ago — about US$247 more on the average project.
Comparison derived from the year-over-year change rate, not a month-by-month price index. We don't store historical snapshots yet — when we do, this will become a real time series.
🏢Top Waterproofing Contractors in Boston
Verified providersA-1 Foundation Crack Repair, Inc.
282 Central St STE 9, Hudson, MA 01749, USA
500 reviews
DryZone Basement Systems
850 Bedford St, Bridgewater, MA 02324, USA
524 reviews
Keller Waterproofing & Foundation Specialists
165 Middlesex Ave Suite #1219, Somerville, MA 02145, USA
37 reviews
Provider data sourced from public business directories. Ratings and reviews are public and may change. LookupCost is not affiliated with listed providers.
💬What People Actually Paid
Community❓Common Questions
Boston home improvement costs are approximately 22% above the national average due to high labor rates ($100-$200/hr) and the prevalence of historic brick or stone foundations which require specialized, labor-intensive sealing techniques.
In 2026, interior solutions like French drains and sump pumps average $3,000 to $6,000. Exterior waterproofing, which requires full excavation around the foundation, typically costs between $7,000 and $15,000+ depending on soil conditions and accessibility.
A professional sump pump installation in Boston typically ranges from $1,200 to $3,000. This includes the basin, the pump unit, and the necessary electrical and plumbing connections to discharge water away from the foundation.
Yes, Boston's high water table and coastal proximity often necessitate more robust systems like dual sump pumps with battery backups and full perimeter drainage, which can increase the total project cost by $2,000 to $5,000 compared to drier regions.
📊Our Methodology
How we collect dataAggregated from 5+ verified web sources and cost databases
Licensed contractor estimates and regional cost guides
Government construction and labor statistics
Community-reported project costs and reviews
Last data collection: 4 days ago. Updates run weekly. All costs in USD.
About this data
Cost figures are estimates synthesized from public market data using AI research and refreshed regularly. Real project costs vary by scope, materials, contractor, and site conditions. Always get verified quotes from licensed contractors for your specific project.
Spotted bad data? Let us know — we'll review and update.