Basement Waterproofing Cost in Austin (2026)
Average cost in Austin
$500 – $20,000
$4 – $8 per sq ft
In Austin, the average is $5,400 and most projects cost between $500 and $20,000, or about $4 – $8 per sq ft. Prices are before tax and based on 8 sources.
Cost Breakdown
ItemizedSkilled waterproofing technicians and excavation
45%
Sealants, membranes, and drainage pipes
35%
Excavators and specialized pumping gear
10%
City of Austin filing fees (if structural)
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 Austin
Likely range $2,430 – $11,880
- Labor45%$2,430
- Materials35%$1,890
- Equipment Rental10%$540
- Permits & Inspections5%$270
- Disposal & Cleanup5%$270
Interior sealant
$5,400
Interior drainage / weeping tile
$8,640
Exterior excavation
$12,960
Calibrated to 8 researched sources for Austin. Before tax. Real quotes vary with site conditions.
📈Price Momentum
Year-over-year~1 year ago
$5,133
Today
$5,400
Basement Waterproofing in Austin is ↑ 5.2% compared to roughly a year ago — about $267 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 Austin
Verified providersHydepark Foundation Repair
3800 N Lamar Blvd Ste 200 02, Austin, TX 78756, USA
30 reviews
Quality Foundation Repair Austin - House Leveling Specialists
8240 Georgian Dr, Austin, TX 78753, USA
552 reviews
G.L. Hunt Foundation Repair
98 San Jacinto Blvd 4th Floor, Ste. A, Austin, TX 78701, USA
1,781 reviews
Olshan Foundation Solutions
410 W N Loop Blvd, Austin, TX 78751, USA
375 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
Austin sits on expansive 'Taylor Black Clay' which can shrink up to 30% during droughts and swell dramatically when wet. This constant movement frequently causes foundation cracks, often requiring structural repairs costing between $3,822 and $9,809 alongside standard waterproofing.
For basic interior or exterior waterproofing that does not involve structural changes or moving plumbing lines, the City of Austin typically does not require a permit. However, if the project includes a full basement finish or structural foundation repair, permits can cost between $150 and $500.
In 2026, Austin homeowners can expect to pay between $3.50 and $8.00 per square foot. Interior solutions like sealants are on the lower end ($2–$7), while exterior excavation and drainage systems fall on the higher end ($7–$15+).
A professional sump pump installation in Austin typically ranges from $1,200 to $3,500. This includes the unit, basin, and labor to integrate it into an interior drainage system, which itself can cost $70 to $100 per linear foot.
📊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.
Spotted bad data? Let us know — we'll review and update.