Most listings are in the $20's per square foot per year. The Green Tree region is seeing a a boost in rates. In the last 3 months, the median rate went up $1 per sqft per year. That's a 5% increase in rent.
In the last 90 days, 38 listings have been made available, which means office spaces most likley are going fast. You'll want to be prepared to tour spaces as quick as possible. About 3% of the available space in the Green Tree are subleases, so you will probably have to consider a longer term lease. 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 2,510 sqft, there are still 0 spaces below 2,000 sqft. Most buildings in this region are around 4 floors. Most buildings in this area were built in 1983 and are Class A.