Most listings are in the $10's per square foot per year. The Sherwood region is experiencing a decline in rates. In the last 3 months, the median rate decreased $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 leases most likley are leasing quickly. You'll want to be prepared to tour spaces as quick as possible. About 250% of the office spaces in the Sherwood are subleases, so you might be able to sign a shorter term by taking over a previous lease. 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 470 sqft. Most properties in this area are around 1 floors. Most buildings in this area were built in 1985 and are Class B.