πŸ“ 8741 121st Street, Richmond Hill, NY 11418 | Serving All NYC Boroughs & Long IslandMon–Sat 7AM–7PM | (917) 765-5757 | Emergency 24/7

Foundation Work &
Retaining Walls NYC

A1 Building Restoration LLC provides expert foundation construction, repair, and waterproofing services across NYC and Long Island. From foundation excavation and concrete pours to retaining walls and structural crack repair β€” our licensed team handles it all, built to NYC DOB code with all permits included.

Free Estimate

Same-day response. No obligation.

βœ… Free Β· Same-day response Β· No obligation

πŸ›οΈ
NYC LicensedFully certified contractor
⭐
5-Star Rated25 verified Google reviews
⚑
Free EstimatesSame-day site visit
πŸ”¨
15+ YearsNYC contractor since 2010
βœ…
Fully InsuredLiability + workers comp

Expert Foundation Construction & Repair in NYC

A1 Building Restoration LLC brings the equipment, licensed expertise, and NYC code knowledge needed to handle complex foundation projects throughout the five boroughs and Long Island. Whether you're building new or repairing existing, our team delivers structural quality you can count on for generations.

Foundation Services We Provide

  • New concrete foundation pours
  • Foundation excavation
  • Retaining wall construction
  • Foundation crack injection and repair
  • Foundation waterproofing (interior and exterior)
  • French drain systems
  • Drain tile and sump pump installation
  • Foundation underpinning
  • Basement wall repair
  • Grade beam construction

Retaining Wall Construction

Retaining walls protect your property from soil erosion, manage grade changes, and create usable outdoor space. A1 Building Restoration builds concrete, concrete block, and masonry retaining walls designed for NYC soil and climate conditions, with proper drainage to prevent hydrostatic pressure buildup.

Foundation Waterproofing

A wet basement or crawl space is more than an inconvenience β€” it's a structural threat and a health hazard. A1 Building Restoration provides comprehensive exterior and interior waterproofing solutions including membrane application, drain board installation, French drain systems, and sump pump installation to keep your foundation dry year-round.

FAQ

Frequently Asked Questions

A1 Building Restoration provides full foundation services including new concrete foundation pours, foundation excavation, retaining wall construction, foundation crack repair, waterproofing, drain tile systems, and structural underpinning for existing foundations.
Warning signs include visible cracks in foundation walls, sticking or misaligned doors and windows, sloping floors, water intrusion in basement, gaps between walls and ceiling, and visible bowing in foundation walls. If you notice any of these, call us immediately for a free assessment.
Yes. All foundation and structural work in NYC requires NYC Department of Buildings (DOB) permits. A1 Building Restoration handles all permit applications, inspections, and sign-offs as part of our service.
Timeline varies by project scope. Simple crack injections can be completed in 1 day. Full foundation waterproofing takes 3–7 days. New foundation pours for additions are planned case-by-case. We provide a detailed timeline with every written estimate.
Service Areas

Serving All NYC Boroughs & Long Island

Ready for Your Free Estimate?

Licensed, insured, and ready to start. Call us or fill out the form β€” we respond same day.

πŸ“ž Call (917) 765-5757 β€” Free On-Site Estimate
πŸ“ž Free Estimate β€” Call Now