Serving Long Island, NY

Dig-Out Basements, Underpinning & House Lifting — Done Right.

Increase square footage, fix structural issues, and waterproof for life. Licensed • Insured • Permit & Engineering Assistance.

10‑Year Structural Warranty No Text Updates On‑Time, On‑Budget
Schedule a Consultation How It Works
🏗️
250+
Structural projects completed
⭐
100%
Permit approval rate
Underpinning and basement dig-out example

Core Services

Full‑service structural and foundation experts. Select a service to learn more.

House Lifting & Structural Support

Temporary shoring, steel I‑beams, cribbing, synchronized jacking, and controlled lifts.

  • Engineered lift plans
  • Settlement correction
  • New foundation pours

Basement Dig‑Outs & Underpinning

Gain livable space by lowering the slab and underpinning existing footings in stages.

  • Sequence underpinning
  • Slab removal & re‑pour
  • Egress compliance

Waterproofing & Drainage

Keep water out permanently with interior/exterior systems tailored to your site.

  • French drains & sumps
  • Exterior membranes
  • Grading & drywells

Egress Windows & Walkouts

Code‑compliant egress with concrete cutting, wells, stairs, and lintel steel.

Foundation Repair

Crack injection, bowed wall reinforcement, sill plate & joist replacement.

Concrete & Masonry

Slabs, footings, frost walls, retaining walls, patios, and flatwork.

Why RC Construction?

Safety First

Redundant shoring, engineered sequences, and third‑party inspections where required.

Transparent Scheduling

Daily text updates with crew times, deliverables, and next steps.

Permit & Engineering Help

We coordinate surveys, stamped drawings, and municipal approvals.

Typical Timeline (Basement Dig‑Out)

  1. Site visit & estimate (1–2 days)
  2. Engineering & permits (2–4 weeks)
  3. Shoring & underpinning (1–3 weeks)
  4. Drainage & slab (3–5 days)
  5. Framing, MEP, finishes (2–6 weeks)

Exact durations vary with scope, soil conditions, and municipality.

Recent Projects

Basement underpinning

Stage underpinning with needle beams.

House lifting

Synchronized jack lift for new frost wall.

Egress installation

Concrete cutting for egress window well.

Replace images with your own project photos for best results.

Customer Reviews

“Professional and meticulous.”

Basement dig‑out finished on time with daily communication and a spotless site.

— J. C., Port Jefferson
“Permit process was easy.”

They coordinated engineering and permits and hit every inspection.

— S. R., Smithtown
“We gained a full level.”

Underpinning, drainage, and a warm, dry living space — transformed our home.

— L. M., Shoreham

How It Works

  1. Book a site visit — we inspect structure, soils, headroom, and utilities.
  2. Scope & estimate — clear line‑item pricing with options.
  3. Permits & engineering — we prepare drawings and submit on your behalf.
  4. Build — shoring, underpinning, drainage, slab, and finishes.
  5. Final walk‑through & warranty handoff.
Start Your Project
Shoring and steel beams

Request a Consultation

By submitting, you agree to be contacted by RC Construction about your project.

Contact

Phone: (631) 555‑0123
Email: info@rcconstructionny.com
Hours: Mon–Sat 8am–6pm

Service Area

Suffolk & Nassau County, NY

Licensing

Licensed & Insured • Permit & Engineering Support