On average, listings lease in the $10's per square foot per year. The Del City region is going through a an increase in rates. In the last 3 months, the median rate increased $18 per sqft per year.
In the last 90 days, 3 listings have been listed, which means new availabilities most likley are leasing quickly. You'll want to be prepared to tour spaces as quick as possible. About 167% of the listings in the Del City 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 on the market, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 2,350 sqft. Most properties in this area are approximately 1 floors. Most buildings in this market were built in 1968 and are Class C.