The typical asking rate per listing is in the $10's per square foot per year. The Carroll County submarket is experiencing a an increase in rates. In the last 3 months, the median rate increased $1 per sqft per year. That's a 7% rise in rent.
Compared to the rest of the Greater Baltimore market, the Carroll County region has less expensive rates, so you should have no trouble finding a great deal in this depreciated submarket.
In the last 90 days, 38 listings have been listed, which means leases 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 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 1,500 sqft. Most properties in this region are approximately 2 floors. Most buildings in this area were built in 1994 and are Class B.