On average, listings lease in the $30's per square foot per year. The Nassau County region is going through a decline in rates. In the last 3 months, the median rate decreased $1 per sqft per year. That's a 2% decrease in rent.
In the last 90 days, 141 listings have come on the market, so you'll want to check back regularly for new listings. About 5% of the available leases in the Nassau 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 available, so finding a space for a small business might be tough.
Even though the median size is 2,820 sqft, there are still 0 leases below 2,000 sqft. Most buildings in this market are around 2 floors. Most buildings in this market were built in 1969 and are Class B.