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Find a licensed foundation repair contractor on Long Island
What foundation repair contractors do
Foundation repair contractors fix cracked, settling or bowing foundation walls and footings, often with an engineer's design, and pair the repair with drainage so the problem does not return.
- Cracks that grow, or doors and windows that start to stick.
- A basement wall that bows or leans.
- Settlement under a porch, a chimney or an addition.
Who licenses foundation repair contractors on Long Island
Suffolk County
- Suffolk's home improvement law covers any repair to residential property and home raising, which it defines as any service that separates a house, or part of one, from its foundation. Doing either as a business takes a county license, barring an exemption.
- Foundation repair is not a separate entry on Suffolk's home improvement list, though basements are.
Nassau County
- Repairing a home's foundation is repair work on a building, which Nassau's Administrative Code counts as home improvement, and no one may run a home improvement business there without a county license.
Step by step: how to check a foundation repair contractor's license in Suffolk or Nassau.
Town by town
Each town page quotes that town's own rules for foundation repair, with the date we read them.
| Town or city | County | What the town says |
|---|---|---|
| Town of Oyster Bay | Nassau County | Changing a building's structural parts in Oyster Bay generally requires a Town permit. |
| Town of Huntington | Suffolk County | Huntington requires sealed architect or engineer drawings for alterations beyond State Education Law 7302 limits. |
| Town of Riverhead | Suffolk County | Riverhead checks footings or piers before the pour and the foundation before backfill. |
| Town of Shelter Island | Suffolk County | Shelter Island permit plans must be scaled and carry an architect's or engineer's stamp. |
What it costs
Labor is a large part of any price. Long Island cement masons and concrete finishers earn a median $65,026 a year, from about $53,234 at entry level to $82,344 with experience. Construction laborers earn a median $58,875 a year, from about $39,468 at entry level to $79,154 with experience. (New York State Department of Labor, wages updated to the first quarter of 2026.)
Foundation repair prices turn on the cause and the extent of the damage, the engineer's design, the method, and access around the house. See the foundation repair cost guide.
What to ask before you hire
- Your county license number, so I can check it before I sign?
- A certificate of insurance sent to me by your insurer, not a photo?
- Should a licensed engineer evaluate this before anyone prices a repair?
- Does the repair need a building permit?
- What causes the movement, and what will stop it coming back?
- What does the warranty cover, and does it transfer when I sell?
How Revival helps
Request a free call. Revival goes over the job and the permit with you, checks licenses and insurance, and introduces up to two vetted, licensed foundation repair contractors as they join our network. You choose who to hire, and you never pay Revival.
Foundation Repair by town
- Foundation repair in Oyster Bay (Nassau County)
- Foundation repair in Huntington (Suffolk County)
- Foundation repair in Riverhead (Suffolk County)
- Foundation repair in Shelter Island (Suffolk County)
Guides
Questions homeowners ask
Do I need an engineer for foundation repair?
For structural repairs, often yes. A licensed professional engineer can evaluate the cause and design the fix, and many towns ask for sealed drawings.
Does foundation repair need a permit on Long Island?
Structural work usually does. The town pages below quote each town's rules.
How does Revival help with a foundation?
A free call to sort out what you are seeing and the order of the work, then introductions to licensed contractors as they join our network.
Sources
Every fact on this page comes from these official pages. Rules and fees change, so confirm with the office before you file anything.
- Suffolk County Consumer Affairs, Home Improvement License Law (PDF) (read 2026-11-03; page dated 5/25)
- Suffolk County Consumer Affairs, Licensing and Enforcement (read 2026-11-03)
- Nassau County, Administrative Code (PDF) (read 2026-11-03; page dated January 1, 2026)
- Town of Oyster Bay, Building Division (read 2026-11-03)
- Town of Huntington, Requirements for Building Permit (Alterations and Structures) (read 2026-11-03; page dated 8/9/2022)
- Town of Riverhead, Inspection and CO Information Sheet (read 2026-11-03; page dated 2021)
- Town of Shelter Island, Building Permit Application (read 2026-11-03)
- New York State Department of Labor, Occupational Wages (Long Island region, wages updated to the first quarter of 2026) (read 2026-11-03)
Checked 2026-11-03. Facts come only from the official pages listed, read on that date.
Talk the job through before you call anyone
Tell us about the house and the job in about four minutes. Revival calls you, free, to go over the scope, the budget, the timing and your town's permit office. Contractor matches open as our first licensed partners sign.