In the last 90 days, 1 listings have been listed, which means new availabilities most likley are going fast. You'll want to be prepared to make an offer immediately. About 200% of the office spaces in the Petersburg County 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.
Even though the median size is 3,500 sqft, there are still 0 leases below 2,000 sqft. Most properties in this market are around 1 stories. Most buildings in this region were built in 1987 and are Class B.