The typical asking rate per listing is in the $10's per square foot per year. The Mendota Heights region is going through a a rise in rates. In the last 3 months, the median rate increased $17 per sqft per year.
In the last 90 days, 20 listings have been made available, which means spaces most likley are leasing quickly. You'll want to be prepared to tour spaces as quick as possible. About 85% of the listings in the Mendota Heights 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 2,010 sqft. Most properties in this area are approximately 2 stories. Most buildings in this region were built in 1994 and are Class B.