On average, listings lease in the $20's per square foot per year. The Arizona submarket is going through a decline in rates. In the last 3 months, the median rate decreased $1 per sqft per year. That's a 5% decrease in rent.
In the last 90 days, 2090 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 need to sign a longer term lease with the landlord directly. 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 1,880 sqft. Most buildings in this market are around 2 floors. Most buildings in this market were built in 1992 and are Class B.