The typical asking rate per listing is in the $10's per square foot per year. The Cameron County submarket is going through a a rise in rates. In the last 3 months, the median rate rose $20 per sqft per year.
In the last 90 days, 3 listings have been made available, which means leases most likley are 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.
Even though the median size is 15,000 sqft, there are still 0 new availabilities below 2,000 sqft. Most buildings in this market are around 1 floors. Most buildings in this region were built in 1984 and are Class A.