The typical asking rate per listing is in the $10's per square foot per year. The York County submarket is going through a a boost in rates. In the last 3 months, the median rate rose $16 per sqft per year.
In the last 90 days, 6 listings have been listed, which means spaces most likley are leasing quickly. You'll want to be prepared to make an offer immediately. About 217% of the available space in the York County 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 1,260 sqft. Most buildings in this region are approximately 1 stories. Most buildings in this area were built in 2005 and are Class B.