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Free · 2026

Basement waterproofing cost calculator

Free and instant. Enter the size and your state to see a 2026 price range.

Basement waterproofing Cost Calculator

2026 updated prices

Total Estimated Cost

$1,500$6,000

Ballpark estimate — your final price depends on scope and materials.

Cost Breakdown

Membrane or coating
$600$2,40040%
Interior/exterior drainage
$450$1,80030%
Sump pump if needed
$300$1,20020%
Crack repair
$150$60010%

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What's included

  • Membrane or coating
  • Interior/exterior drainage
  • Sump pump if needed
  • Crack repair

What drives the cost

  • Interior vs exterior method
  • Water table / severity
  • Sump and drains
  • Excavation needed

Basement waterproofing cost by state