Most listings are in the $30's per square foot per year. The Denver County region is experiencing a a boost in rates. In the last 3 months, the median rate increased $3 per sqft per year. That's a 9% rise in rent.
In the last 90 days, 452 listings have been made available, so you'll want to check back regularly for new listings. About 4% of the available leases in the Denver County 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.
Even though the median size is 2,830 sqft, there are still 0 office spaces below 2,000 sqft. Most properties in this area are close to 4 floors. Most buildings in this area were built in 1975 and are Class B.