The typical asking rate per listing is in the $10's per square foot per year. The Cumberland County submarket is going through a decline in rates. In the last 3 months, the median rate decreased $2 per sqft per year. That's a 11% decline in rent.
In the last 90 days, 56 listings have been listed, so you'll want to check back regularly for new listings. About 2% of the available leases in the Cumberland County are subleases, so you will probably need to sign a longer term lease with the landlord directly. 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 1,280 sqft. Most properties in this region are close to 2 floors. Most buildings in this region were built in 1980 and are Class B.