The typical asking rate per listing is in the $10's per square foot per year. The DeSoto region is going through a a boost in rates. In the last 3 months, the median rate increased $14 per sqft per year.
Compared to the rest of the DFW Metroplex market, the DeSoto region has less expensive rates, so you should have no trouble finding a great deal in this undervalued submarket.
In the last 90 days, 16 listings have been made available, which means new availabilities are probably leasing quickly. You'll want to be prepared to tour spaces as quick as possible. About 38% of the available leases in the DeSoto 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 1,500 sqft. Most properties in this region are approximately 1 stories. Most buildings in this area were built in 1985 and are Class B.