Most listings are in the $20's per square foot per year. The Castle Rock submarket is seeing a decline in rates. In the last 3 months, the median rate fell $6 per sqft per year. That's a 18% decrease in rent.
Compared to the rest of the Denver Metro market, the Castle Rock submarket has less expensive rates, so you should have no trouble finding a great deal in this undervalued region.
In the last 90 days, 18 listings have come on the market, which means leases are probably going fast. You'll want to be prepared to make an offer immediately. About 6% of the office spaces in the Castle Rock are subleases, so you will probably have to focus your search on direct office leases. There aren't many listings below 2,000 square feet on the market, 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 market are approximately 2 floors. Most buildings in this area were built in 1997 and are Class B.