In the last 90 days, 6 listings have been made available, which means new listings most likley are leasing quickly. You'll want to be prepared to make an offer immediately. About 300% of the available leases in the Warren 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.
The standard measurement for office space in this area is around 1,000 sqft. Most buildings in this region are approximately 2 stories. Most buildings in this area were built in 1964 and are Class C.