On average, listings lease in the $10's per square foot per year. The Harlingen region is experiencing a a boost in rates. In the last 3 months, the median rate rose $20 per sqft per year.
In the last 90 days, 34 listings have been made available, which means office spaces most likley are leasing quickly. You'll want to be prepared to tour spaces as quick as possible. About 41% of the available space in the Harlingen 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 available, so finding a space for a small business might be tough.
Even though the median size is 63,000 sqft, there are still 0 office spaces below 2,000 sqft. Most buildings in this region are around 1 floors. Most buildings in this area were built in 1997 and are Class A.