On average, listings lease in the $30's per square foot per year. The Suffolk County submarket is experiencing a a rise in rates. In the last 3 months, the median rate rose $30 per sqft per year.
In the last 90 days, 11 listings have been made available, which means office spaces most likley are leasing quickly. You'll want to be prepared to make an offer immediately. About 9% of the office spaces in the Suffolk County are subleases, so you will probably need to consider the implications of signing a direct lease with the building. 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 2,500 sqft. Most buildings in this area are approximately 2 stories. Most buildings in this market were built in 2006 and are Class A.