Most listings are in the $20's per square foot per year. The Middleton region is seeing a a boost in rates. In the last 3 months, the median rate increased $3 per sqft per year. That's a 14% rise in rent.
In the last 90 days, 17 listings have been posted online, which means leases might be leasing quickly. You'll want to be prepared to make an offer immediately. About 6% of the listings in the Middleton are subleases, so you will probably need to consider the implications of signing a direct lease with the building. 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 2,270 sqft. Most buildings in this market are close to 2 floors. Most buildings in this market were built in 1995 and are Class A.