On average, listings lease in the $10's per square foot per year. The Aurora submarket is experiencing a a rise in rates. In the last 3 months, the median rate increased $17 per sqft per year.
In the last 90 days, 1 listings have been listed, which means listings most likley are going fast. You'll want to be prepared to tour spaces as quick as possible. There aren't many listings below 2,000 square feet available, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 950 sqft. Most properties in this area are around 2 floors.