Most listings are in the $20's per square foot per year. The Aurora submarket is seeing a decrease in rates. In the last 3 months, the median rate decreased $1 per sqft per year. That's a 5% decline in rent.
Compared to the rest of the Denver Metro market, the Aurora submarket has smaller rates, so you should have no trouble finding a great deal in this depreciated region.
In the last 90 days, 108 listings have been posted online, so you'll want to check back regularly for new listings. About 1% of the available space in the Aurora 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 2,250 sqft. Most buildings in this area are approximately 2 stories. Most buildings in this area were built in 1984 and are Class B.