On average, listings lease in the $20's per square foot per year. The Greater Baltimore submarket is going through a a rise in rates. In the last 3 months, the median rate rose $1 per sqft per year. That's a 5% rise in rent.
Compared to the rest of the Greater Baltimore market, the Greater Baltimore submarket has lower rates, so you should have no trouble finding a great deal in this discounted submarket.
In the last 90 days, 237 listings have been listed, so you'll want to check back regularly for new listings. About 3% of the available space in the Greater Baltimore 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 2,240 sqft. Most properties in this market are around 2 floors. Most buildings in this area were built in 1986 and are Class A.