On average, listings lease in the $20's per square foot per year. The Green Valley submarket is going through a decline in rates. In the last 3 months, the median rate fell $3 per sqft per year. That's a 9% decline in rent.
Compared to the rest of the Tucson Metropolitan Area market, the Green Valley region has greater rates, and you'll have to negotiate above asking rent to be in this hot submarket.
In the last 90 days, 1 listings have come on the market, which means spaces most likley are leasing quickly. You'll want to be prepared to tour spaces as quick as possible. There aren't many listings below 2,000 square feet on the market, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 2,340 sqft. Most properties in this area are around 2 stories. Most buildings in this market were built in 2000 and are Class B.