On average, listings lease in the $20's per square foot per year. The Casas Adobes submarket is experiencing a decline in rates. In the last 3 months, the median rate fell $1 per sqft per year. That's a 3% decrease in rent.
Compared to the rest of the Tucson Metropolitan Area market, the Casas Adobes submarket has greater rates, and you'll have to negotiate above asking rent to be in this hot region.
In the last 90 days, 37 listings have been posted online, which means office spaces most likley are leasing quickly. You'll want to be prepared to tour spaces as quick as possible. About 5% of the listings in the Casas Adobes are subleases, so you will probably need to consider the implications of signing a direct lease with the building. There aren't many listings below 2,000 square feet posted, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 2,400 sqft. Most properties in this market are approximately 2 stories. Most buildings in this region were built in 1995 and are Class B.