Basement Waterproofing Cost in Boston (2026)
Average cost in Boston
$2,450 – $15,000
$4 – $12 per sq ft
In Boston, the average is $5,730 and most projects cost between $2,450 and $15,000, or about $4 – $12 per sq ft. Prices are before tax and based on 8 sources.
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 project
LiveYour estimate in Boston
Likely range $2,579 – $12,606
- Labor45%$2,579
- Materials35%$2,006
- Equipment10%$573
- Permits & Inspections5%$287
- Disposal & Cleanup5%$287
Interior sealant
$5,730
Interior drainage / weeping tile
$9,168
Exterior excavation
$13,752
Calibrated to 8 researched sources for Boston. Before tax. Real quotes vary with site conditions.
📈Price Momentum
Year-over-year~1 year ago
$5,483
Today
$5,730
Basement Waterproofing in Boston is ↑ 4.5% compared to roughly a year ago — about $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 providersFenway Masonry & Waterproofing, Chimney Repair, Basement Repair Boston
867 Boylston St Ste 501, Boston, MA 02116, USA
74 reviews
Keller Waterproofing & Foundation Specialists
165 Middlesex Ave Ste 1219, Somerville, MA 02145, USA
41 reviews
Groundworks Foundation Repair Boston
33 W Bacon St, Plainville, MA 02762, USA
2,107 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: 1 months 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.
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