Long Island Remodeling

Remodeling Contractors in Nassau County

Nassau remodelers, grouped by the town each one is based in. Before any of them opens a wall, look up the county license number on the estimate.

Get free quotes

Nassau County licenses home improvement contractors through its Department of Consumer Affairs. The county says it is against the law to run a home improvement business in Nassau without that license, and every licensed contractor has been fingerprinted. Use the lookup before you sign.

Permits are a different office. In Nassau they come from your town, city or incorporated village, and the rules differ from one to the next. The Village of Floral Park, for one, publishes its own finished basement guidelines and bans basement bedrooms. Call the building department that covers your street with the scope of the job.

On a contract signed at your home, Nassau’s checklist says you can cancel within three days, and recommends doing it by certified mail with a return receipt.

Nassau remodelers by town

Grouped by the town each company is based in. Google ratings and review counts are a snapshot from October 2026.

Town of Hempstead3 remodelers

Town of North Hempstead1 remodeler

Town of Oyster Bay1 remodeler

Nassau questions

Open a door to read the answer.

How do I check a Nassau contractor's license?

Type the company name or number into the county's license lookup. Consumer Affairs, on (516) 571-2600, will confirm a license by phone and say whether complaints are on file.

Who licenses plumbers and electricians in Nassau?

Your local government. Nassau Consumer Affairs leaves plumber and electrician licensing to each town, city and village. The home improvement license does not cover plumbing or electrical work, so on a bathroom or kitchen job ask for both.

Do I need a permit for my remodel?

Ask your town, city or village building department. Nassau's consumer checklist says the owner is responsible for getting permits, or making sure the contractor does, unless the contract gives that job to the contractor.

How long does a contractor have to finish?

Nassau County's checklist says that by law a job must be completed within 30 days of the promised completion date.

Nassau sources

Checked October 2026

  1. Nassau County Consumer Affairs, Jurisdiction
  2. Nassau County, Consumer Checklist for Home Improvement and Repair
  3. Nassau County, Home Improvement license FAQ
  4. Nassau County, home improvement license lookup
  5. Village of Floral Park, Guidelines for Finished Basements (rev. Mar 9, 2026)
Get free quotes