In the last 90 days, 10 listings have been listed, which means new availabilities most likley are going fast. You'll want to be prepared to make an offer immediately. 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 630 sqft. Most properties in this market are around 3 floors. Most buildings in this area were built in 1930 and are Class C.