Most listings are in the $30's per square foot per year. The Mineola submarket is going through a a boost in rates. In the last 3 months, the median rate increased $1 per sqft per year. That's a 2% rise in rent.
In the last 90 days, 5 listings have been posted online, which means new availabilities are probably going fast. You'll want to be prepared to make an offer immediately. About 120% of the available space in the Mineola are subleases, so you might be able to sign a shorter term by taking over a previous lease. 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 4,000 sqft, there are still 0 listings below 2,000 sqft. Most buildings in this area are close to 2 floors. Most buildings in this region were built in 1971 and are Class C.