Most listings are in the $30's per square foot per year. The Denver County region is going through a a boost in rates. In the last 3 months, the median rate increased $2 per sqft per year. That's a 6% increase in rent.
In the last 90 days, 359 listings have been listed, so you'll want to check back regularly for new listings. About 4% of the available space 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.
Even though the median size is 3,920 sqft, there are still 0 office spaces below 2,000 sqft. Most buildings in this region are approximately 4 floors. Most buildings in this market were built in 1974 and are Class B.