Most listings are in the $20's per square foot per year. The Vancouver submarket is going through a an increase in rates. In the last 3 months, the median rate increased $3 per sqft per year. That's a 11% increase in rent.
Compared to the rest of the Greater Portland market, the Vancouver submarket has lower rates, so you should have no trouble finding a great deal in this depreciated region.
In the last 90 days, 31 listings have been made available, which means new listings might be going fast. 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 1,350 sqft. Most properties in this market are close to 2 stories. Most buildings in this region were built in 1993 and are Class A.