The typical asking rate per listing is in the $20's per square foot per year. The Port Jefferson Station region is experiencing a a rise in rates. In the last 3 months, the median rate went up $21 per sqft per year.
In the last 90 days, 2 listings have come on the market, which means new 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 on the market, 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 area are approximately 2 stories. Most buildings in this market were built in 1990 and are Class B.