In the last 90 days, 218 listings have come on the market, so you'll want to check back regularly for new listings. About 1% of the available space in the Pima County 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 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 1,780 sqft. Most buildings in this market are close to 2 stories. Most buildings in this region were built in 1985 and are Class B.