On average, listings lease in the $10's per square foot per year. The Tucson region is experiencing a decrease in rates. In the last 3 months, the median rate fell $2 per sqft per year. That's a 9% decline in rent.
Compared to the rest of the Tucson Metropolitan Area market, the Tucson region has lower rates, so you should have no trouble finding a great deal in this depreciated submarket.
In the last 90 days, 147 listings have been posted online, so you'll want to check back regularly for new listings. About 3% of the available leases in the Tucson 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 1,600 sqft. Most properties in this market are close to 2 stories. Most buildings in this market were built in 1982 and are Class B.