On average, listings lease in the $40's per square foot per year. The New River submarket is experiencing a an increase in rates. In the last 3 months, the median rate went up $25 per sqft per year. That's a 119% rise in rent.
Compared to the rest of the Phoenix Metropolitan Area market, the New River region has greater rates, and you'll need to make a great offer to be in this hot region.
In the last 90 days, 1 listings have been listed, which means new availabilities most likley are leasing quickly. You'll want to be prepared to make an offer immediately. 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 1,200 sqft. Most buildings in this market were built in 2008 and are Class A.