On average, listings lease in the $20's per square foot per year. The Glendale submarket is going through a a boost in rates. In the last 3 months, the median rate went up $1 per sqft per year. That's a 6% rise in rent.
Compared to the rest of the Phoenix Metropolitan Area market, the Glendale submarket has greater rates, and you'll need to make a great offer to be in this hot submarket.
In the last 90 days, 82 listings have been listed, so you'll want to check back regularly for new listings. About 1% of the listings in the Glendale 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 available, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 2,290 sqft. Most properties in this area are close to 2 stories. Most buildings in this region were built in 2001 and are Class B.