The typical asking rate per listing is in the $10's per square foot per year. The White Marsh submarket is going through a a rise in rates. In the last 3 months, the median rate increased $18 per sqft per year.
Compared to the rest of the Greater Baltimore market, the White Marsh region has smaller rates, so you should have no trouble finding a great deal in this discounted submarket.
In the last 90 days, 15 listings have been listed, which means office spaces are probably leasing quickly. You'll want to be prepared to tour spaces as quick as possible. About 60% of the office spaces in the White Marsh are subleases, so you might be able to find a shorter term or below market rent. 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 2,120 sqft. Most properties in this region are around 1 floors. Most buildings in this region were built in 1990 and are Class B.