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 boost in rates. In the last 3 months, the median rate went up $2 per sqft per year. That's a 11% rise in rent.
Compared to the rest of the Greater Baltimore market, the White Marsh submarket has smaller rates, so you should have no trouble finding a great deal in this depreciated region.
In the last 90 days, 15 listings have been listed, which means spaces are probably leasing quickly. You'll want to be prepared to tour spaces as quick as possible. About 7% of the available space in the White Marsh are subleases, so you will probably have to consider a longer term lease. 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 2,470 sqft. Most buildings in this area are close to 1 floors. Most buildings in this area were built in 1990 and are Class B.