The typical asking rate per listing is in the $20's per square foot per year. The Garden City submarket is going through a a rise in rates. In the last 3 months, the median rate went up $2 per sqft per year. That's a 11% rise in rent.
In the last 90 days, 10 listings have been posted online, which means leases most likley are going fast. You'll want to be prepared to tour spaces as quick as possible. 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 6,000 sqft, there are still 0 office spaces below 2,000 sqft. Most properties in this area are close to 1 floors. Most buildings in this area were built in 2003 and are Class A.