On average, listings lease in the $10's per square foot per year. The Sherwood submarket is seeing a decrease in rates. In the last 3 months, the median rate fell $17 per sqft per year. That's a 51% decline in rent.
In the last 90 days, 2 listings have been posted online, which means office spaces most likley are leasing quickly. You'll want to be prepared to tour spaces as quick as possible. About 200% of the office spaces in the Sherwood are subleases, so you might be able to find a shorter term or below market rent. 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 470 sqft. Most buildings in this market are around 1 stories. Most buildings in this region were built in 1981 and are Class B.