The typical asking rate per listing is in the $20's per square foot per year. The Tucson region is going through a decrease in rates. In the last 3 months, the median rate decreased $1 per sqft per year. That's a 6% decrease in rent.
Compared to the rest of the Tucson Metropolitan Area market, the Tucson submarket has smaller rates, so you should have no trouble finding a great deal in this discounted submarket.
In the last 90 days, 164 listings have been made available, so you'll want to check back regularly for new listings. About 2% of the available space in the Tucson 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.
The standard measurement for office space in this area is around 2,030 sqft. Most properties in this region are approximately 2 stories. Most buildings in this area were built in 1984 and are Class B.