Most listings are in the $20's per square foot per year. The Tempe submarket is experiencing a decline in rates. In the last 3 months, the median rate decreased $3 per sqft per year. That's a 11% decline in rent.
Compared to the rest of the Phoenix Metropolitan Area market, the Tempe submarket has lower rates, so you should have no trouble finding a great deal in this undervalued submarket.
In the last 90 days, 93 listings have been listed, so you'll want to check back regularly for new listings. About 11% of the available space in the Tempe are subleases, so you might be able to find a shorter term or below market rent. 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 2,180 sqft. Most buildings in this market are around 2 floors. Most buildings in this region were built in 1987 and are Class B.