Suffolk County's Department of Economic Development & Planning's number one priority is to make it easier for you to do business in Suffolk. The department has made available a pamphlet entitled the Suffolk County Guide for Business, which is a directory of the most common resources necessary for starting a business within Suffolk County.
The pamphlet can be downloaded here in a viewable or printable format.
The first and best place to start planning your new business is with a Small Business Development Center (SBDC) advisor, who can help you draft a business plan. The SBDC has offices in Farmingdale and Stony Brook.
Also available is the: