Basement Waterproofing Cost in Dallas (2026)
Average cost in Dallas
$2,112 – $7,732
$3 – $11 per sq ft
In Dallas, the average is $4,734 and most projects cost between $2,112 and $7,732, or about $3 – $11 per sq ft. Prices are before tax and based on 10 sources.
Cost Breakdown
ItemizedSkilled waterproofing technicians
50%
Sealants, membranes, and drains
35%
Excavation tools and debris removal
10%
City of Dallas building permits
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 Dallas
Likely range $2,130 – $7,732
- Labor50%$2,367
- Materials35%$1,657
- Equipment & Disposal10%$473
- Permits & Inspections5%$237
Interior sealant
$4,734
Interior drainage / weeping tile
$7,574
Exterior excavation
$11,362
Calibrated to 10 researched sources for Dallas. Before tax. Real quotes vary with site conditions.
📈Price Momentum
Year-over-year~1 year ago
$4,509
Today
$4,734
Basement Waterproofing in Dallas is ↑ 5.0% compared to roughly a year ago — about $225 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 Dallas
Verified providersTop Level Foundation Repair
7548 Preston Rd #141, Frisco, TX 75034, USA
114 reviews
Smart Foundation Repair Dallas
11816 Inwood Rd #1247, Dallas, TX 75244, USA
111 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
Dallas features clay-rich soil that expands significantly when wet, exerting hydrostatic pressure on foundations. This, combined with frequent flash flood risks, makes waterproofing essential to prevent structural cracks and mold.
Interior waterproofing, which manages water already inside, averages $3,175. Exterior waterproofing, involving excavation to prevent water entry, is more permanent but costs an average of $7,425.
Residential permits for waterproofing and drainage projects in Dallas typically range from $150 to $500, depending on the project's complexity and total valuation.
Professional contractors in Dallas charge approximately $210 per hour for labor. This rate is roughly 6% higher than the national average due to the local cost of living and high demand for skilled trades.
📊Our Methodology
How we collect dataAggregated from 10+ 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.
Spotted bad data? Let us know — we'll review and update.