In the last 90 days, 2 listings have been listed, which means spaces most likley are going fast. You'll want to be prepared to tour spaces as quick as possible. About 250% of the available leases in the Hempstead are subleases, so you might be able to find a shorter term or below market rent. There aren't many listings below 2,000 square feet posted, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 800 sqft. Most buildings in this region are close to 2 stories. Most buildings in this region were built in 1960 and are Class B.