The typical asking rate per listing is in the $20's per square foot per year. The Eagle County submarket is going through a an increase in rates. In the last 3 months, the median rate rose $3 per sqft per year. That's a 11% increase in rent.
In the last 90 days, 20 listings have come on the market, which means leases are probably going fast. You'll want to be prepared to tour spaces as quick as possible. 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 1,500 sqft. Most buildings in this market are approximately 2 floors. Most buildings in this region were built in 1997 and are Class A.