On average, listings lease in the $20's per square foot per year. The Maricopa County submarket is experiencing a decrease in rates. In the last 3 months, the median rate fell $2 per sqft per year. That's a 8% decrease in rent.
In the last 90 days, 1558 listings have been made available, so you'll want to check back regularly for new listings. About 3% of the listings in the Maricopa 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 1,870 sqft. Most properties in this market are close to 2 stories. Most buildings in this market were built in 1990 and are Class B.