The typical asking rate per listing is in the $20's per square foot per year. The Dallas County submarket is going through a a boost in rates. In the last 3 months, the median rate rose $26 per sqft per year.
In the last 90 days, 2432 listings have been listed, so you'll want to check back regularly for new listings. About 43% of the listings in the Dallas County 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.
Even though the median size is 2,540 sqft, there are still 0 new availabilities below 2,000 sqft. Most properties in this region are close to 3 stories. Most buildings in this area were built in 1983 and are Class B.