On average, listings lease in the $20's per square foot per year. The McAllen region is experiencing a a boost in rates. In the last 3 months, the median rate increased $0 per sqft per year. That's a 2% increase in rent.
In the last 90 days, 33 listings have been made available, which means office spaces most likley are going fast. 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.
Even though the median size is 3,250 sqft, there are still 0 spaces below 2,000 sqft. Most properties in this area are around 1 stories. Most buildings in this market were built in 2003 and are Class B.