The typical asking rate per listing is in the $10's per square foot per year. The Parker submarket is seeing a a boost in rates. In the last 3 months, the median rate went up $14 per sqft per year.
In the last 90 days, 1 listings have come on the market, which means new availabilities are probably going fast. You'll want to be prepared to tour spaces as quick as possible. About 200% of the listings in the Parker are subleases, so you might be able to snag a great spot on a short term. 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 1,660 sqft. Most buildings in this market are around 1 floors. Most buildings in this area were built in 1976 and are Class C.