You will need to fill out Form SS-4, the application for employer identification number. This website provides an entrance to numerous resources for starting, financing, expanding or relocating a business in Suffolk County, NY.Business licenses are due March 1 of each year. Landowners or lawful occupants who want to control access to their property and prevent timber theft may post signs warning people to keep out. You must have a General Vendor license to sell, lease, or offer to sell or lease goods or services in a public place that is not a store. Once you have chosen a potential location, you will need to confirm the zoning regulations for that area. Our in-house design and design-management team partners with clients, designers, and Suffolk's operations teams to deliver projects in a variety of sectors. A single personal property assessment is made for all taxable personal property of the owner located in the city or town. 2. After downloading and printing applicable forms, please fill out and mail to: Suffolk County Police Department Headquarters 30 Yaphank Ave Yaphank, NY 11980. Click here to learn about our teams, our projects and how we're transforming how we work through innovation and technology!