On average, listings lease in the $10's per square foot per year. The Eau Claire County submarket is experiencing a decrease in rates. In the last 3 months, the median rate decreased $3 per sqft per year. That's a 17% decrease in rent.
In the last 90 days, 12 listings have been posted online, which means new listings most likley are going fast. You'll want to be prepared to make an offer immediately. About 150% of the available leases in the Eau Claire County are subleases, so you might be able to sign a shorter term by taking over a previous lease. 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 1,030 sqft. Most buildings in this market are around 3 floors. Most buildings in this market were built in 1988 and are Class B.