Most listings are in the $40's per square foot per year. The Melville region is going through a an increase in rates. In the last 3 months, the median rate increased $8 per sqft per year. That's a 23% rise in rent.
In the last 90 days, 29 listings have come on the market, which means new availabilities most likley are leasing quickly. You'll want to be prepared to make an offer immediately. About 128% of the available leases in the Melville 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 available, so finding a space for a small business might be tough.
Even though the median size is 5,410 sqft, there are still 0 office spaces below 2,000 sqft. Most buildings in this area are around 3 floors. Most buildings in this region were built in 1981 and are Class A.