Most listings are in the $20's per square foot per year. The Glendale region is seeing a decline in rates. In the last 3 months, the median rate decreased $4 per sqft per year. That's a 14% decrease in rent.
Compared to the rest of the Phoenix Metropolitan Area market, the Glendale submarket has lower rates, so you should have no trouble finding a great deal in this undervalued region.
In the last 90 days, 29 listings have been listed, which means new availabilities are probably leasing quickly. You'll want to be prepared to tour spaces as quick as possible. 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 1,800 sqft. Most buildings in this region are around 2 floors. Most buildings in this market were built in 2000 and are Class B.