On average, listings lease in the $10's per square foot per year. The Okemos submarket is experiencing a decline in rates. In the last 3 months, the median rate decreased $1 per sqft per year. That's a 6% decline in rent.
In the last 90 days, 30 listings have been made available, which means spaces most likley are going fast. You'll want to be prepared to make an offer immediately. About 7% of the office spaces in the Okemos 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 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 2,180 sqft. Most buildings in this region are close to 1 stories. Most buildings in this region were built in 1985 and are Class A.