On average, listings lease in the $10's per square foot per year. The Casa Grande region is going through a decline in rates. In the last 3 months, the median rate decreased $1 per sqft per year. That's a 7% decrease in rent.
Compared to the rest of the Phoenix Metropolitan Area market, the Casa Grande submarket has less expensive rates, so you should have no trouble finding a great deal in this discounted region.
In the last 90 days, 1 listings have been made available, 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 2,330 sqft. Most buildings in this area are around 1 floors. Most buildings in this region were built in 2003 and are Class B.