On average, listings lease in the $30's per square foot per year. The Rockville submarket is seeing a an increase in rates. In the last 3 months, the median rate went up $6 per sqft per year. That's a 18% increase in rent.
Compared to the rest of the Washington D.C. market, the Rockville region has greater rates, and you'll have to negotiate above asking rent to be in this hot region.
In the last 90 days, 54 listings have come on the market, so you'll want to check back regularly for new listings. About 4% of the listings in the Rockville are subleases, so you will probably have to focus your search on direct office leases. There aren't many listings below 2,000 square feet available, so finding a space for a small business might be tough.
Even though the median size is 5,980 sqft, there are still 0 spaces below 2,000 sqft. Most properties in this area are around 4 stories. Most buildings in this area were built in 1986 and are Class A.