On average, listings lease in the $30's per square foot per year. The Lorton submarket is going through a a boost in rates. In the last 3 months, the median rate rose $30 per sqft per year.
Compared to the rest of the Washington D.C. market, the Lorton submarket has smaller rates, so you should have no trouble finding a great deal in this discounted region.
In the last 90 days, 3 listings have come on the market, which means leases most likley are leasing quickly. You'll want to be prepared to make an offer immediately. There aren't many listings below 2,000 square feet posted, so finding a space for a small business might be tough.
Even though the median size is 12,520 sqft, there are still 0 listings below 2,000 sqft. Most properties in this market are close to 1 floors. Most buildings in this region were built in 2000 and are Class A.