On average, listings lease in the $10's per square foot per year. The Warren County submarket is going through a a boost in rates. In the last 3 months, the median rate increased $16 per sqft per year.
In the last 90 days, 1 listings have been posted online, which means new listings most likley are going fast. You'll want to be prepared to make an offer immediately. About 500% of the office spaces 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.
Even though the median size is 13,000 sqft, there are still 0 new availabilities below 2,000 sqft. Most buildings in this region are approximately 2 floors. Most buildings in this area were built in 1960 and are Class B.