The typical asking rate per listing is in the $10's per square foot per year. The Richmond submarket is seeing a an increase in rates. In the last 3 months, the median rate went up $18 per sqft per year.
In the last 90 days, 2 listings have come on the market, which means spaces most likley are leasing quickly. You'll want to be prepared to make an offer immediately. About 150% of the office spaces in the Richmond 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 1,020 sqft. Most buildings in this area are approximately 2 stories. Most buildings in this market were built in 1998 and are Class B.