Most listings are in the $10's per square foot per year. The York County region is going through a decline in rates. In the last 3 months, the median rate decreased $4 per sqft per year. That's a 21% decline in rent.
In the last 90 days, 7 listings have been made available, which means listings 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 on the market, 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 market are around 2 stories. Most buildings in this region were built in 2005 and are Class B.