Most listings are in the $10's per square foot per year. The Euless region is going through a a rise in rates. In the last 3 months, the median rate rose $2 per sqft per year. That's a 13% rise in rent.
Compared to the rest of the DFW Metroplex market, the Euless region has lower rates, so you should have no trouble finding a great deal in this depreciated submarket.
In the last 90 days, 29 listings have been posted online, which means office spaces are probably leasing quickly. You'll want to be prepared to make an offer immediately. 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 2,500 sqft. Most properties in this market are around 2 stories. Most buildings in this area were built in 1985 and are Class B.