Foundation Repair Services on Long Island

We handle every foundation problem Long Island homes produce — from single crack injection to full underpinning. Licensed in Nassau County and Suffolk County. Free inspections with no obligation.

✓ Nassau DCA Licensed✓ Suffolk Consumer Affairs Licensed✓ $500K Insured

Foundation Crack Repair

Foundation cracks are Long Island's most common structural complaint — and the most misunderstood. Not every crack is an emergency, but every crack is a message. We diagnose the cause, classify the severity, and fix it r

Typical Cost Range
$500$8,000
Common Problems We Solve
  • Horizontal cracks in CMU block walls indicating hydrostatic pressure bowing
  • Diagonal cracks from differential settlement in sandy or organic soils
  • Stair-step cracks in block mortar joints from clay soil movement
Learn About Crack Repair

Bowing Wall Repair

A bowing basement wall is Long Island's most urgent foundation problem. Hydrostatic pressure from our naturally high water table pushes outward against aging CMU block walls from the outside — 24 hours a day, 365 days a

Typical Cost Range
$4,000$15,000
Common Problems We Solve
  • Inward bowing from hydrostatic pressure (dominant on South Shore, high water table)
  • Horizontal cracking from clay soil lateral pressure (North Shore)
  • Structural failure risk if ignored — walls that reach 2" deflection often cannot be repair
Learn About Bowing Walls

Basement Waterproofing

Long Island gets 45 inches of rain per year with no true dry season, a water table that sits 2–6 feet below the surface, and clay soils that hold water like a sponge. Basement water isn't a homeowner failure — it's a geo

Typical Cost Range
$3,000$25,000+
Common Problems We Solve
  • Seepage through block wall joints (most common in Nassau County)
  • Floor-wall joint leaks from hydrostatic uplift under slab
  • Active flooding during Nor'easters and named storms
Learn About Waterproofing

Foundation Settlement Repair

Uneven floors, sticking doors, diagonal cracks — these are the warning signs of foundation settlement. On Long Island, settlement is driven by our unique soil conditions: organic subsoils compressing under former farm fi

Typical Cost Range
$10,000$30,000+
Common Problems We Solve
  • Uneven floors (visible with a level — more than 1" drop in 10 ft is significant)
  • Sticking doors and windows from frame racking
  • Diagonal cracks originating from corners of windows/doors
Learn About Settlement Repair

Helical Pier Installation

A helical pier is a steel shaft with helical plates — like a giant engineered screw — driven past Long Island's problematic upper soils to stable bearing stratum below. It lifts and permanently supports your foundation w

Typical Cost Range
$1,000/pier$3,500/pier
Common Problems We Solve
  • Settlement in soft, organic, or sandy soils (common in coastal LI)
  • Limited access for large equipment in suburban yards
  • Coastal fill areas with no bedrock within reasonable depth
Learn About Helical Piers

Carbon Fiber Strap Repair

Carbon fiber straps are the preferred solution for Long Island's suburban bowing wall problem. No excavation. No yard access needed. One day to install. 10x stronger than steel. And a lifetime transferable warranty that

Typical Cost Range
$4,000$12,000
Common Problems We Solve
  • Bowing walls with 1/4" to 2" deflection (prime window for carbon fiber)
  • Suburban properties with no room for yard-based wall anchor installations
  • Homeowners who want non-invasive repair with minimal landscape disruption
Learn About Carbon Fiber Straps

French Drain Installation

A French drain is a gravel-filled trench with a perforated pipe that intercepts and redirects groundwater before it can build hydrostatic pressure against your foundation. On Long Island's South Shore, where the water ta

Typical Cost Range
$74/linear ft$89/linear ft
Common Problems We Solve
  • Chronic basement seepage from South Shore high water table
  • Yard flooding that channels toward foundation
  • Hydrostatic pressure buildup against basement walls and floor slab
Learn About French Drains

Not Sure Which Service You Need?

Our free inspection includes an honest diagnosis of exactly what your foundation requires — and what it doesn't.

Written quotes valid for 30 days. No same-day pressure. No obligation.

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