Most listings are in the $20's per square foot per year. The Montgomery County region is experiencing a a rise in rates. In the last 3 months, the median rate rose $1 per sqft per year. That's a 3% rise in rent.
In the last 90 days, 21 listings have come on the market, which means new listings most likley are going fast. You'll want to be prepared to make an offer immediately. About 95% of the available leases in the Montgomery County 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 posted, so finding a space for a small business might be tough.
Even though the median size is 4,070 sqft, there are still 0 office spaces below 2,000 sqft. Most properties in this region are around 1 floors. Most buildings in this region were built in 1992 and are Class A.