Free, no-obligation inspection from a vetted local foundation specialist.
Exterior membranes, interior drains, and sump systems that keep basements dry.Drop your ZIP and we'll match you with one vetted local specialist for a free inspection — typically within 24 hours. We make the introduction. They handle the work. No spam calls, no five-way bidding war.
Scope of work
Foundation waterproofing keeps water out of your basement or crawl space using a layered defense: exterior membrane, drain tile, interior perimeter drains, and a sump system. The right combination depends on your soil, water table, and the original waterproofing detail (or lack of it).
The matched specialist will give you a written scope and estimate after the free inspection.
Where you are
Pick your metro to see the local soil, climate, and cost context your matched contractor will work with.
Local cost typically $4,000 – $18,000. Most common cause: summer drought shrinking clay away from the slab perimeter.
Local cost typically $4,300 – $19,400. Most common cause: hurricane and flood saturation followed by rapid drying.
Local cost typically $4,500 – $20,200. Most common cause: bentonite swelling beneath slabs and basement floors (heave, not settlement).
Local cost typically $4,100 – $18,400. Most common cause: seasonal clay shrinkage pulling away from slab edges.
Local cost typically $4,300 – $19,400. Most common cause: seasonal clay shrinkage pulling away from slab edges.
Local cost typically $3,900 – $17,600. Most common cause: seasonal clay shrinkage pulling away from slab edges.
Local cost typically $3,800 – $16,900. Most common cause: seasonal clay shrinkage pulling away from slab edges.
Local cost typically $3,700 – $16,600. Most common cause: seasonal clay shrinkage pulling away from slab edges.
Local cost typically $4,200 – $18,900. Most common cause: irrigation overspray or leaks concentrating water near footings.
Local cost typically $4,100 – $18,500. Most common cause: irrigation overspray or leaks concentrating water near footings.
Local cost typically $3,800 – $17,300. Most common cause: irrigation overspray or leaks concentrating water near footings.
Local cost typically $5,100 – $23,000. Most common cause: hillside creep or poorly compacted fill settlement.
Local cost typically $4,700 – $21,200. Most common cause: irrigation overspray or leaks concentrating water near footings.
Local cost typically $5,000 – $22,300. Most common cause: hillside creep or poorly compacted fill settlement.
Local cost typically $5,400 – $24,500. Most common cause: hillside creep or poorly compacted fill settlement.
Local cost typically $5,400 – $24,100. Most common cause: hillside creep or poorly compacted fill settlement.
Local cost typically $4,600 – $20,900. Most common cause: hillside creep or poorly compacted fill settlement.
Local cost typically $5,000 – $22,300. Most common cause: hillside creep or poorly compacted fill settlement.
Local cost typically $4,600 – $20,500. Most common cause: hillside creep or poorly compacted fill settlement.
Local cost typically $4,300 – $19,400. Most common cause: snowmelt saturating soils near basement walls.
Local cost typically $4,300 – $19,400. Most common cause: snowmelt saturating soils near basement walls.
Local cost typically $4,600 – $20,500. Most common cause: hydrostatic pressure against basement walls after storms.
Local cost typically $4,300 – $19,400. Most common cause: hydrostatic pressure against basement walls after storms.
Local cost typically $4,100 – $18,400. Most common cause: hydrostatic pressure against basement walls after storms.
Local cost typically $4,000 – $18,000. Most common cause: hydrostatic pressure against basement walls after storms.
Local cost typically $3,800 – $17,300. Most common cause: hydrostatic pressure against basement walls after storms.
Local cost typically $3,900 – $17,600. Most common cause: hydrostatic pressure against basement walls after storms.
Local cost typically $3,900 – $17,600. Most common cause: hydrostatic pressure against basement walls after storms.
Local cost typically $3,900 – $17,600. Most common cause: hydrostatic pressure against basement walls after storms.
Local cost typically $3,800 – $17,300. Most common cause: hydrostatic pressure against basement walls after storms.
Local cost typically $3,800 – $17,300. Most common cause: hydrostatic pressure against basement walls after storms.
Local cost typically $5,500 – $24,800. Most common cause: snowmelt and stormwater raising hydrostatic pressure.
Local cost typically $5,100 – $23,000. Most common cause: snowmelt and stormwater raising hydrostatic pressure.
Local cost typically $4,500 – $20,200. Most common cause: snowmelt and stormwater raising hydrostatic pressure.
Local cost typically $4,000 – $18,000. Most common cause: snowmelt and stormwater raising hydrostatic pressure.
Local cost typically $5,000 – $22,300. Most common cause: snowmelt and stormwater raising hydrostatic pressure.
Local cost typically $4,400 – $19,800. Most common cause: snowmelt and stormwater raising hydrostatic pressure.
Local cost typically $4,100 – $18,400. Most common cause: crawl space humidity leading to wood rot and sagging floors.
Local cost typically $4,200 – $19,100. Most common cause: crawl space humidity leading to wood rot and sagging floors.
Local cost typically $4,200 – $18,700. Most common cause: crawl space humidity leading to wood rot and sagging floors.
Local cost typically $4,100 – $18,400. Most common cause: crawl space humidity leading to wood rot and sagging floors.
Local cost typically $4,200 – $18,700. Most common cause: crawl space humidity leading to wood rot and sagging floors.
Local cost typically $4,100 – $18,400. Most common cause: crawl space humidity leading to wood rot and sagging floors.
Local cost typically $3,800 – $16,900. Most common cause: crawl space humidity leading to wood rot and sagging floors.
Local cost typically $3,700 – $16,600. Most common cause: crawl space humidity leading to wood rot and sagging floors.
Local cost typically $4,200 – $19,100. Most common cause: heavy rain or tropical storms saturating clay around the home.
Local cost typically $4,000 – $18,000. Most common cause: stormwater washout beneath slabs and driveways.
Local cost typically $4,200 – $18,700. Most common cause: stormwater washout beneath slabs and driveways.
Local cost typically $4,200 – $19,100. Most common cause: stormwater washout beneath slabs and driveways.
Local cost typically $4,700 – $21,200. Most common cause: stormwater washout beneath slabs and driveways.
Local cost typically $4,600 – $20,900. Most common cause: stormwater washout beneath slabs and driveways.
Don't see your metro? Drop your ZIP above and we'll confirm coverage.
Warning signs
If two or more of these appear in your home, it's worth scheduling a free inspection. Early repairs cost a fraction of late ones.
Water seepage through walls or floor cracks
Efflorescence (white powder) on basement walls
Standing water after heavy rain
Persistent humidity or mildew
FAQ
Exterior is the gold standard but requires excavation. Interior drainage with a sump is more accessible, less invasive, and effective for most homes — and often the only practical option on tight lots.
Modern membranes and drain systems carry 25-year to lifetime warranties. As long as the drainage path stays clear and the sump pump is maintained, it should last decades.
In any home with a high water table, yes — drainage moves water to the sump, the sump moves it out. Together they form one system.
One licensed local contractor. One free inspection. One written estimate. No spam, no bidding war, no obligation.