On average, listings lease in the $20's per square foot per year. The Castle Rock submarket is experiencing a a boost in rates. In the last 3 months, the median rate increased $7 per sqft per year. That's a 29% rise in rent.
Compared to the rest of the Denver Metro market, the Castle Rock region has higher rates, and you'll need to pay a premium to be in this hot submarket.
In the last 90 days, 16 listings have been posted online, which means listings are probably leasing quickly. You'll want to be prepared to make an offer immediately. About 6% of the available leases 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 posted, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 2,420 sqft. Most buildings in this area are close to 2 stories. Most buildings in this market were built in 1996 and are Class B.