Most listings are in the $20's per square foot per year. The Aurora region is experiencing a a boost in rates. In the last 3 months, the median rate rose $4 per sqft per year. That's a 20% rise in rent.
Compared to the rest of the Denver Metro market, the Aurora submarket has less expensive rates, so you should have no trouble finding a great deal in this depreciated region.
In the last 90 days, 83 listings have come on the market, so you'll want to check back regularly for new listings. 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 1,810 sqft. Most properties in this region are approximately 2 floors. Most buildings in this region were built in 1984 and are Class B.