The typical asking rate per listing is in the $10's per square foot per year. The Garland submarket is going through a a rise in rates. In the last 3 months, the median rate increased $20 per sqft per year.
Compared to the rest of the DFW Metroplex market, the Garland submarket has less expensive rates, so you should have no trouble finding a great deal in this depreciated submarket.
In the last 90 days, 20 listings have been listed, which means listings are probably leasing quickly. You'll want to be prepared to make an offer immediately. About 50% of the office spaces in the Garland are subleases, so you might be able to snag a great spot on a short term. There aren't many listings below 2,000 square feet available, so finding a space for a small business might be tough.
Even though the median size is 9,590 sqft, there are still 0 new listings below 2,000 sqft. Most buildings in this region are approximately 1 floors. Most buildings in this market were built in 1983 and are Class B.