The typical asking rate per listing is in the $20's per square foot per year. The Bellingham region is going through a an increase in rates. In the last 3 months, the median rate went up $4 per sqft per year. That's a 20% increase in rent.
In the last 90 days, 25 listings have been made available, which means listings 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 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 1,310 sqft. Most buildings in this area are close to 2 floors. Most buildings in this market were built in 1985 and are Class B.