On average, listings lease in the $10's per square foot per year. The Beltsville region is experiencing a a boost in rates. In the last 3 months, the median rate rose $18 per sqft per year.
Compared to the rest of the Washington D.C. market, the Beltsville region has smaller rates, so you should have no trouble finding a great deal in this depreciated region.
In the last 90 days, 5 listings have been posted online, which means new availabilities are probably going fast. You'll want to be prepared to make an offer immediately. About 100% of the office spaces in the Beltsville are subleases, so you might be able to sign a shorter term by taking over a previous lease. There aren't many listings below 2,000 square feet posted, so finding a space for a small business might be tough.
Even though the median size is 8,400 sqft, there are still 0 new listings below 2,000 sqft. Most buildings in this region are approximately 1 stories. Most buildings in this area were built in 1986 and are Class A.