On average, listings lease in the $40's per square foot per year. The Lake Success region is going through a a boost in rates. In the last 3 months, the median rate increased $42 per sqft per year.
In the last 90 days, 11 listings have been made available, which means new availabilities most likley are going fast. You'll want to be prepared to make an offer immediately. 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 4,700 sqft, there are still 0 leases below 2,000 sqft. Most buildings in this market were built in 1973 and are Class A.