On average, listings lease in the $20's per square foot per year. The Dallas County submarket is seeing a an increase in rates. In the last 3 months, the median rate increased $1 per sqft per year. That's a 5% increase in rent.
In the last 90 days, 1789 listings have been posted online, so you'll want to check back regularly for new listings. About 3% of the listings in the Dallas County are subleases, so you will probably have to consider a longer term lease. There aren't many listings below 2,000 square feet on the market, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 1,870 sqft. Most buildings in this region are around 3 stories. Most buildings in this area were built in 1983 and are Class B.