On average, listings lease in the $10's per square foot per year. The Osseo submarket is going through a a rise in rates. In the last 3 months, the median rate increased $15 per sqft per year.
In the last 90 days, 10 listings have come on the market, which means leases are probably leasing quickly. You'll want to be prepared to make an offer immediately. 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 1,180 sqft. Most buildings in this market are around 2 floors. Most buildings in this area were built in 1992 and are Class B.