Most listings are in the $30's per square foot per year. The Clackamas County submarket is going through a decrease in rates. In the last 3 months, the median rate fell $3 per sqft per year. That's a 8% decline in rent.
In the last 90 days, 49 listings have been made available, so you'll want to check back regularly for new listings. About 4% of the available leases in the Clackamas County are subleases, so you will probably have to consider a longer term 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 1,500 sqft. Most buildings in this area are close to 3 floors. Most buildings in this area were built in 1991 and are Class A.