The typical asking rate per listing is 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 $37 per sqft per year.
In the last 90 days, 5 listings have been posted online, which means office spaces most likley are going fast. You'll want to be prepared to make an offer immediately. About 40% of the office spaces in the Mineola are subleases, so you might be able to snag a great spot on a short term. 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 30,000 sqft, there are still 0 spaces below 2,000 sqft. Most properties in this area are close to 2 stories. Most buildings in this area were built in 1971 and are Class C.