Compared to the rest of the Phoenix Metropolitan Area market, the Glendale submarket has higher rates, and you'll need to pay a premium to be in this hot region.
In the last 90 days, 32 listings have come on the market, which means listings most likley are leasing quickly. You'll want to be prepared to make an offer immediately. About 3% of the listings in the Glendale 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 1,680 sqft. Most properties in this market are approximately 2 stories. Most buildings in this area were built in 2000 and are Class B.