Most listings are in the $20's per square foot per year. The Montgomery County region is experiencing a an increase in rates. In the last 3 months, the median rate increased $4 per sqft per year. That's a 22% increase in rent.
In the last 90 days, 133 listings have been posted online, so you'll want to check back regularly for new listings. About 6% of the listings in the Montgomery County are subleases, so you will probably need to sign a longer term lease with the landlord directly. 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 2,400 sqft. Most properties in this region are close to 2 floors. Most buildings in this area were built in 2002 and are Class B.