On average, listings lease in the $20's per square foot per year. The Shiawassee County region is going through a a rise in rates. In the last 3 months, the median rate increased $5 per sqft per year. That's a 25% increase in rent.
In the last 90 days, 14 listings have been made available, which means leases most likley are leasing quickly. You'll want to be prepared to tour spaces as quick as possible. About 64% of the office spaces in the Shiawassee County are subleases, so you might be able to find a shorter term or below market rent. 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 800 sqft. Most buildings in this area are approximately 1 floors. Most buildings in this market were built in 1900 and are Class Class A.