In the last 90 days, 2089 listings have been posted online, so you'll want to check back regularly for new listings. About 3% of the available space in the DFW Metroplex are subleases, so you will probably have to consider a longer term lease. 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 1,800 sqft. Most properties in this area are close to 2 floors. Most buildings in this market were built in 1985 and are Class B.