The typical asking rate per listing is in the $20's per square foot per year. The Arizona region is experiencing a an increase in rates. In the last 3 months, the median rate rose $1 per sqft per year. That's a 3% rise in rent.
In the last 90 days, 2278 listings have been posted online, so you'll want to check back regularly for new listings. About 4% of the available space in the Arizona are subleases, so you will probably have to focus your search on direct office leases. 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 2,120 sqft. Most buildings in this area are around 2 floors. Most buildings in this region were built in 1993 and are Class B.