The typical asking rate per listing is in the $20's per square foot per year. The Manassas Park region is experiencing a a boost in rates. In the last 3 months, the median rate went up $23 per sqft per year.
Compared to the rest of the Washington D.C. market, the Manassas Park submarket has smaller rates, so you should have no trouble finding a great deal in this discounted submarket.
In the last 90 days, 12 listings have been listed, which means spaces might be leasing quickly. You'll want to be prepared to tour spaces as quick as possible. About 33% of the office spaces in the Manassas Park are subleases, so you might be able to sign a shorter term by taking over a previous lease. 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.