Basement Waterproofing Cost in Dallas (2026)
Average cost in Dallas
US$2,112 — US$7,732
US$3 — US$11 per sq ft
Cost Breakdown
ItemizedProfessional installation at ~$210/hr
45%
Sealants, membranes, and vapor barriers
35%
Sump pumps and drainage pipes
15%
Dallas municipal filing fees
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$6,080 — US$9,120
Based on 7 sources and market data for Dallas. Actual costs may vary depending on specific project requirements.
🏢Top Waterproofing Contractors in Dallas
Verified providersKPost Roofing & Waterproofing
1841 W Northwest Hwy, Dallas, TX 75220, USA
839 reviews
Ecoscape Foundation & Home Services
3883 Turtle Creek Blvd Suite 1412, Dallas, TX 75219, USA
145 reviews
Top Level Foundation Repair
7548 Preston Rd #141, Frisco, TX 75034, USA
98 reviews
Smart Foundation Repair Dallas
11816 Inwood Rd #1247, Dallas, TX 75244, USA
93 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 is prone to intense flash floods and has clay-rich soil that expands when wet. This creates significant hydrostatic pressure against foundations, making waterproofing essential to prevent structural cracks and sudden flooding, costing an average of $4,734.
In Dallas, a professional sump pump installation typically ranges from $600 to $2,500, depending on the pump's capacity and whether a new basin must be excavated into the concrete floor.
Homeowners in the Dallas-Fort Worth area can expect to pay between $3 and $11 per square foot. Interior sealants are on the lower end ($3-$5), while comprehensive exterior systems involving excavation reach the higher end ($9-$11+).
Yes, most major waterproofing projects in Dallas that involve structural changes or plumbing (like sump pumps) require a permit, which typically costs between $150 and $500 depending on the project scope.
📊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: today. Updates run weekly. All costs in USD.