Most listings are in the $10's per square foot per year. The Midvale submarket is experiencing a a rise in rates. In the last 3 months, the median rate increased $20 per sqft per year.
In the last 90 days, 13 listings have come on the market, which means spaces most likley are going fast. You'll want to be prepared to make an offer immediately. About 85% of the available space in the Midvale 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 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 properties in this market are close to 2 floors. Most buildings in this area were built in 1984 and are Class B.