The Nassau County Department of Consumer Affairs is responsible for the licensing of home improvement contractors. If you have a complaint related to work done on your home, please download and mail a Consumer Complaint Form.
For more information on the licensing of home improvement contractors, or tips for the consumer, please visit the Licensing Division.
Commissioner
240 Old Country Rd
3rd Floor
Mineola, New York 11501
Directions
(516) 571-2600
Contact Form
Licensing
(516) 571-2600
Taxi & Limousine Division
(516) 571-2467
Weights & Measures Division
(516) 571-3200
Hours:
Front Desk: 9:00AM – 4:30PM
*Must be signed in by 4:15 P.M.
*The Front Desk of Consumer Affairs will be closed from 2:00 pm to 2:30 pm on Wednesday, September 30, 2026 for Staff Development.
*During the lunch hours of 12:00 P.M. to 2:00 P.M., there will be only one Front Desk staff member. Thank you for your patience.
ALERTS:
A HOME IMPROVEMENT CONTRACTOR and other LICENSE LOOKUP/SEARCH
FINGERPRINTING
RRP LEAD CERTIFICATION
SECOND-HAND PRECIOUS METAL AND GEM DEALERS