On average, listings lease in the $20's per square foot per year. The Suffolk County region is going through a an increase in rates. In the last 3 months, the median rate went up $1 per sqft per year. That's a 3% increase in rent.
In the last 90 days, 11 listings have been listed, which means leases are probably going fast. You'll want to be prepared to tour spaces as quick as possible. About 9% of the available leases in the Suffolk County are subleases, so you will probably need to sign a longer term lease with the landlord directly. There aren't many listings below 2,000 square feet posted, so finding a space for a small business might be tough.
Even though the median size is 3,210 sqft, there are still 0 office spaces below 2,000 sqft. Most buildings in this area are approximately 2 floors. Most buildings in this region were built in 2006 and are Class A.