The typical asking rate per listing is in the $20's per square foot per year. The Catonsville submarket is going through a an increase in rates. In the last 3 months, the median rate rose $3 per sqft per year. That's a 19% increase in rent.
Compared to the rest of the Greater Baltimore market, the Catonsville region has lower rates, so you should have no trouble finding a great deal in this undervalued region.
In the last 90 days, 20 listings have been listed, which means listings might be going fast. You'll want to be prepared to tour spaces as quick as possible. About 5% of the office spaces in the Catonsville are subleases, so you will probably need to consider the implications of signing a direct lease with the building. 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 2,178 sqft. Most buildings in this area are approximately 2 stories. Most buildings in this region were built in 1985 and are Class B.