The typical asking rate per listing is in the $20's per square foot per year. The Castle Rock region is seeing a an increase in rates. In the last 3 months, the median rate went up $28 per sqft per year.
Compared to the rest of the Denver Metro market, the Castle Rock region has lower rates, so you should have no trouble finding a great deal in this discounted region.
In the last 90 days, 18 listings have been made available, which means new availabilities are probably going fast. You'll want to be prepared to tour spaces as quick as possible. About 33% of the office spaces in the Castle Rock are subleases, so you might be able to find a shorter term or below market rent. There aren't many listings below 2,000 square feet available, so finding a space for a small business might be tough.
Even though the median size is 11,270 sqft, there are still 0 office spaces below 2,000 sqft. Most buildings in this region are close to 2 floors. Most buildings in this area were built in 1997 and are Class B.