The typical asking rate per listing is in the $20's per square foot per year. The Manassas Park County submarket is seeing a an increase in rates. In the last 3 months, the median rate rose $23 per sqft per year.
In the last 90 days, 12 listings have been posted online, which means listings are probably going fast. You'll want to be prepared to tour spaces as quick as possible. About 33% of the available leases in the Manassas Park 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 available, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 1,550 sqft. Most buildings in this area were built in 1983 and are Class A.