On average, listings lease in the $30's per square foot per year. The Manassas Park region is seeing a a rise in rates. In the last 3 months, the median rate rose $16 per sqft per year. That's a 79% increase in rent.
Compared to the rest of the Washington D.C. market, the Manassas Park submarket has more expensive rates, and you'll have to negotiate above asking rent to be in this hot submarket.
In the last 90 days, 16 listings have been listed, which means office spaces are probably leasing quickly. You'll want to be prepared to make an offer immediately. 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 460 sqft. Most buildings in this region were built in 1983 and are Class B.