Nassau County
7,391 licensed contractors
Contractors holding a Nassau County home improvement license. Popular towns:
All 78 Nassau County towns →Browse by trade
All 24 trades →How it works
- Pick your trade and townChoose from 24 trades and 191 Long Island towns and hamlets.
- Compare licensed contractorsSee each contractor's county, license number, status and the trades on their license.
- Verify and contact directlyConfirm the license with the county, then call or email the contractor. No middleman.
Browse by county
Suffolk County
8,874 licensed contractors
Contractors holding a Suffolk County home improvement license. Popular towns:
All 113 Suffolk County towns →Popular towns
All 191 towns →Before you hire on Long Island
- Check the license number with the county that issued it. Nassau and Suffolk each license home improvement contractors separately.
- Ask for proof of insurance: general liability, plus workers' compensation if they have employees.
- Get a written contract with the price, payment schedule, start and finish dates, and the work described in detail.
- Confirm permits with your town or village building department before work starts.
Frequently asked questions
Where does this contractor information come from?
Every listing comes from the home improvement license records published by the Nassau County and Suffolk County Departments of Consumer Affairs. Only currently valid licenses are included.
Do Long Island contractors need a license?
Nassau County and Suffolk County each license home improvement contractors. Ask any contractor for their county license number and check it with the county before you hire.
Is it free to use?
Yes. Homeowners can search the registry and contact contractors directly for free. There are no lead fees and no middleman.
What does "Renewal due" mean?
The Suffolk County record shows the license as about to expire. Ask the contractor to confirm it has been renewed before work starts.
How do I correct or remove a listing?
Email info@contractorsonlongisland.com with the license number and the change you need.