Most listings are in the $30's per square foot per year. The Rockville region is going through a an increase in rates. In the last 3 months, the median rate rose $5 per sqft per year. That's a 18% increase in rent.
Compared to the rest of the Washington D.C. market, the Rockville submarket has greater rates, and you'll have to negotiate above asking rent to be in this hot region.
In the last 90 days, 33 listings have been listed, which means office spaces might be going fast. You'll want to be prepared to tour spaces as quick as possible. About 197% of the listings in the Rockville 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 on the market, so finding a space for a small business might be tough.
Even though the median size is 3,360 sqft, there are still 0 spaces below 2,000 sqft. Most buildings in this area are around 4 floors. Most buildings in this region were built in 1985 and are Class A.