On average, listings lease in the $20's per square foot per year. The James City County submarket is going through a a boost in rates. In the last 3 months, the median rate increased $1 per sqft per year. That's a 7% increase in rent.
In the last 90 days, 10 listings have been made available, which means new listings might be going fast. You'll want to be prepared to make an offer immediately. About 10% of the available leases in the James City County are subleases, so you will probably need to consider the implications of signing a direct lease with the building. 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 1,200 sqft. Most properties in this area are approximately 1 floors. Most buildings in this market were built in 2000 and are Class A.