In the last 90 days, 3 listings have been posted online, which means leases are probably leasing quickly. You'll want to be prepared to make an offer immediately. There aren't many listings below 2,000 square feet on the market, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 550 sqft. Most buildings in this area are approximately 3 floors. Most buildings in this region were built in 1870 and are Class B.