On average, listings lease in the $20's per square foot per year. The Cedar Hill submarket is going through a an increase in rates. In the last 3 months, the median rate went up $24 per sqft per year.
Compared to the rest of the DFW Metroplex market, the Cedar Hill region has more expensive rates, and you'll have to negotiate above asking rent to be in this hot region.
In the last 90 days, 3 listings have been posted online, which means listings are probably going fast. You'll want to be prepared to make an offer immediately. 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 1,890 sqft. Most properties in this area are around 1 stories. Most buildings in this region were built in 2007 and are Class B.