Most listings are in the $20's per square foot per year. The Manassas County region is seeing a decline in rates. In the last 3 months, the median rate decreased $5 per sqft per year. That's a 20% decrease in rent.
In the last 90 days, 30 listings have come on the market, which means new listings are probably going fast. You'll want to be prepared to make an offer immediately. About 7% of the available leases in the Manassas County are subleases, so you will probably have to consider a longer term lease. There aren't many listings below 2,000 square feet posted, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 2,490 sqft. Most properties in this market are close to 2 floors. Most buildings in this market were built in 1989 and are Class B.