On average, listings lease in the $10's per square foot per year. The Winchester County submarket is experiencing a a rise in rates. In the last 3 months, the median rate rose $2 per sqft per year. That's a 13% rise in rent.
In the last 90 days, 5 listings have been made available, which means leases are probably going fast. You'll want to be prepared to make an offer immediately. 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 1,800 sqft. Most properties in this region are around 2 floors. Most buildings in this area were built in 1995 and are Class A.