In the last 90 days, 5 listings have come on the market, which means leases most likley are going fast. You'll want to be prepared to make an offer immediately. About 20% of the listings in the Roosevelt 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 available, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 2,210 sqft. Most buildings in this area were built in 2002 and are Class A.