Compared to the rest of the DFW Metroplex market, the Garland region has less expensive rates, so you should have no trouble finding a great deal in this undervalued region.
In the last 90 days, 20 listings have been listed, which means new availabilities might be going fast. You'll want to be prepared to make an offer immediately. About 35% of the available leases in the Garland are subleases, so you might be able to sign a shorter term by taking over a previous 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 1,400 sqft. Most buildings in this area are around 1 floors. Most buildings in this market were built in 1983 and are Class B.