On average, listings lease in the $30's per square foot per year. The Multnomah County region is seeing a an increase in rates. In the last 3 months, the median rate rose $3 per sqft per year. That's a 9% increase in rent.
In the last 90 days, 260 listings have been posted online, so you'll want to check back regularly for new listings. About 7% of the available space in the Multnomah County 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 2,030 sqft. Most properties in this market are around 3 floors. Most buildings in this area were built in 1961 and are Class B.