On average, listings lease in the $20's per square foot per year. The Green Tree region is going through a a rise in rates. In the last 3 months, the median rate rose $1 per sqft per year. That's a 5% rise in rent.
In the last 90 days, 38 listings have been made available, which means new listings are probably going fast. You'll want to be prepared to make an offer immediately. About 3% of the available leases in the Green Tree are subleases, so you will probably need to sign a longer term lease with the landlord directly. 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 2,510 sqft, there are still 0 new availabilities below 2,000 sqft. Most buildings in this market are approximately 4 floors. Most buildings in this area were built in 1983 and are Class A.