The typical asking rate per listing is in the $20's per square foot per year. The Oregon region is experiencing a an increase in rates. In the last 3 months, the median rate went up $2 per sqft per year. That's a 8% rise in rent.
In the last 90 days, 523 listings have been made available, so you'll want to check back regularly for new listings. About 4% of the available space in the Oregon are subleases, so you will probably have to focus your search on direct office leases. 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 2,000 sqft. Most buildings in this area are approximately 2 stories. Most buildings in this area were built in 1985 and are Class A.