On average, listings lease in the $20's per square foot per year. The Surprise submarket is going through a decline in rates. In the last 3 months, the median rate decreased $11 per sqft per year. That's a 33% decline in rent.
Compared to the rest of the Phoenix Metropolitan Area market, the Surprise submarket has smaller rates, so you should have no trouble finding a great deal in this discounted submarket.
In the last 90 days, 6 listings have been listed, which means listings most likley are going fast. You'll want to be prepared to tour spaces as quick as possible. About 133% of the listings in the Surprise are subleases, so you might be able to snag a great spot on a short term. 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 2,000 sqft. Most buildings in this region are close to 1 stories. Most buildings in this region were built in 2005 and are Class B.