Most listings are in the $10's per square foot per year. The Salmon Creek submarket is experiencing a a rise in rates. In the last 3 months, the median rate went up $18 per sqft per year.
Compared to the rest of the Greater Portland market, the Salmon Creek submarket has less expensive rates, so you should have no trouble finding a great deal in this undervalued submarket.
In the last 90 days, 2 listings have been posted online, which means leases are probably going fast. You'll want to be prepared to make an offer immediately. 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 2,500 sqft. Most buildings in this market are approximately 2 floors. Most buildings in this region were built in 2002 and are Class A.