Most listings are in the $10's per square foot per year. The Carroll County submarket is going through a decline in rates. In the last 3 months, the median rate fell $1 per sqft per year. That's a 6% decline in rent.
Compared to the rest of the Greater Baltimore market, the Carroll County submarket has smaller rates, so you should have no trouble finding a great deal in this depreciated submarket.
In the last 90 days, 25 listings have been posted online, which means new listings are probably going fast. You'll want to be prepared to make an offer immediately. About 148% of the listings in the Carroll County are subleases, so you might be able to sign a shorter term by taking over a previous lease. There aren't many listings below 2,000 square feet available, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 980 sqft. Most properties in this market are close to 2 floors. Most buildings in this region were built in 1988 and are Class B.