Compared to the rest of the Washington D.C. market, the Bethesda region has higher rates, and you'll have to negotiate above asking rent to be in this hot region.
In the last 90 days, 23 listings have been posted online, which means spaces might be leasing quickly. You'll want to be prepared to make an offer immediately. About 13% of the available space in the Bethesda are subleases, so you might be able to snag a great spot on a short term. There aren't many listings below 2,000 square feet on the market, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 2,500 sqft. Most properties in this region are close to 10 floors. Most buildings in this area were built in 1982 and are Class A.