Basement Cost Guides 2026
Real pricing data for every basement project. No guesswork — just honest national averages with regional context.
$20–$75
per sq ft to finish
$3–$15k
waterproofing avg
$500–$3k
sump pump installed
$350–$1.5k
per foundation crack
Highest-Impact Cost Guides
💰 MOST READBasement Finishing Cost Guide 2026: What You'll Actually Pay
How much does it cost to finish a basement in 2026? Real pricing from $20 to $75 per sq ft, full breakdowns by size, room type, and region.
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💰 MOST READBasement Waterproofing Cost 2026: What You'll Actually Pay
How much does basement waterproofing cost in 2026? National average $5,230. Interior systems $3,000-$8,000, exterior $8,000-$15,000. Full cost breakdown by method.
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Sump Pump Installation Cost 2026
Pedestal vs. submersible pump pricing, pit excavation, and battery backup costs explained.
9 min readFrench Drain Installation Cost 2026
Full cost breakdown for yard and interior French drains. Average $1,000-6,500 depending on length and type.
10 min readFoundation Crack Repair Cost 2026
Epoxy injection vs. polyurethane foam. Expect to pay $350-1,500 per crack depending on severity and method.
12 min readEgress Window Installation Cost 2026
How much does it cost to install an egress window in 2026? Permits, excavation, drainage, and labor costs explained.
12 18 readMold Remediation Cost 2026
Professional mold removal costs $500-$10,000+ by area size. What drives the price and when to call a pro.
8 min read