The typical asking rate per listing is in the $20's per square foot per year. The Denver County region is experiencing a decrease in rates. In the last 3 months, the median rate decreased $2 per sqft per year. That's a 6% decline in rent.
In the last 90 days, 327 listings have been listed, so you'll want to check back regularly for new listings. About 6% of the available leases in the Denver County are subleases, so you will probably have to consider a longer term lease. 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 2,460 sqft. Most buildings in this region are around 5 floors. Most buildings in this region were built in 1977 and are Class B.