On average, listings lease in the $20's per square foot per year. The Baltimore County region is experiencing a an increase in rates. In the last 3 months, the median rate went up $1 per sqft per year. That's a 3% increase in rent.
Compared to the rest of the Greater Baltimore market, the Baltimore County region has smaller rates, so you should have no trouble finding a great deal in this discounted region.
In the last 90 days, 186 listings have been made available, so you'll want to check back regularly for new listings. About 6% of the office spaces in the Baltimore County are subleases, so you will probably have to focus your search on direct office leases. 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 2,320 sqft. Most buildings in this market are around 2 floors. Most buildings in this area were built in 1983 and are Class B.