The typical asking rate per listing is in the $10's per square foot per year. The Eagle region is experiencing a decline in rates. In the last 3 months, the median rate decreased $3 per sqft per year. That's a 13% decrease in rent.
In the last 90 days, 22 listings have come on the market, which means office spaces most likley are going fast. You'll want to be prepared to make an offer immediately. About 5% of the available leases in the Eagle 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 1,400 sqft. Most buildings in this region are close to 1 stories. Most buildings in this market were built in 2005 and are Class A.