Most listings are in the $20's per square foot per year. The Port Jefferson Station region is seeing a a rise in rates. In the last 3 months, the median rate increased $21 per sqft per year.
In the last 90 days, 2 listings have been made available, which means listings most likley are going fast. You'll want to be prepared to make an offer immediately. There aren't many listings below 2,000 square feet posted, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 1,600 sqft. Most properties in this region are approximately 2 floors. Most buildings in this area were built in 1990 and are Class B.