Most listings are in the $20's per square foot per year. The Beaverton region is going through a decrease in rates. In the last 3 months, the median rate decreased $1 per sqft per year. That's a 3% decline in rent.
Compared to the rest of the Greater Portland market, the Beaverton submarket has lower rates, so you should have no trouble finding a great deal in this undervalued region.
In the last 90 days, 65 listings have been made available, so you'll want to check back regularly for new listings. 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 1,950 sqft. Most buildings in this area are close to 1 stories. Most buildings in this region were built in 1987 and are Class A.