The typical asking rate per listing is in the $10's per square foot per year. The Evans submarket is going through a a rise in rates. In the last 3 months, the median rate went up $3 per sqft per year. That's a 20% rise in rent.
In the last 90 days, 6 listings have been listed, which means office spaces most likley are leasing quickly. You'll want to be prepared to make an offer immediately. About 17% of the available space in the Evans are subleases, so you might be able to find a shorter term or below market rent. 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 1,600 sqft. Most buildings in this area are approximately 2 floors. Most buildings in this area were built in 2006 and are Class A.