Most listings are in the $20's per square foot per year. The Carrollton submarket is going through a decrease in rates. In the last 3 months, the median rate fell $2 per sqft per year. That's a 9% decrease in rent.
Compared to the rest of the DFW Metroplex market, the Carrollton region has lower rates, so you should have no trouble finding a great deal in this undervalued submarket.
In the last 90 days, 46 listings have been posted online, so you'll want to check back regularly for new listings. About 2% of the listings in the Carrollton 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 2,340 sqft. Most buildings in this area are close to 1 stories. Most buildings in this region were built in 1988 and are Class B.