Most listings are in the $10's per square foot per year. The Mentor submarket is experiencing a a boost in rates. In the last 3 months, the median rate increased $16 per sqft per year.
In the last 90 days, 30 listings have been made available, which means new listings are probably leasing quickly. You'll want to be prepared to make an offer immediately. About 97% of the available leases in the Mentor are subleases, so you might be able to snag a great spot on a short term. 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 800 sqft. Most properties in this region are close to 1 floors. Most buildings in this area were built in 1988 and are Class B.