On average, listings lease in the $20's per square foot per year. The Suffolk County submarket is going through a decline in rates. In the last 3 months, the median rate decreased $1 per sqft per year. That's a 6% decrease in rent.
In the last 90 days, 16 listings have been listed, which means spaces most likley are leasing quickly. You'll want to be prepared to tour spaces as quick as possible. About 13% of the available leases in the Suffolk County are subleases, so you might be able to find a shorter term or below market rent. There aren't many listings below 2,000 square feet on the market, so finding a space for a small business might be tough.
Even though the median size is 4,950 sqft, there are still 0 leases below 2,000 sqft. Most buildings in this region are around 2 stories. Most buildings in this area were built in 2006 and are Class A.