The typical asking rate per listing is in the $20's per square foot per year. The Tucson submarket is going through a a boost in rates. In the last 3 months, the median rate rose $1 per sqft per year. That's a 5% rise in rent.
Compared to the rest of the Tucson Metropolitan Area market, the Tucson submarket has lower rates, so you should have no trouble finding a great deal in this discounted submarket.
In the last 90 days, 111 listings have been listed, so you'll want to check back regularly for new listings. About 1% of the office spaces in the Tucson are subleases, so you will probably need to sign a longer term lease with the landlord directly. There aren't many listings below 2,000 square feet available, 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 market are around 2 floors. Most buildings in this area were built in 1982 and are Class B.