On average, listings lease in the $30's per square foot per year. The West Linn submarket is going through a a boost in rates. In the last 3 months, the median rate rose $3 per sqft per year. That's a 8% rise in rent.
Compared to the rest of the Greater Portland market, the West Linn submarket has greater rates, and you'll need to make a great offer to be in this hot submarket.
In the last 90 days, 3 listings have been listed, which means new availabilities are probably leasing quickly. You'll want to be prepared to tour spaces as quick as possible. 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 1,630 sqft. Most buildings in this region were built in 2006 and are Class A.