Compared to the rest of the Greater Portland market, the Tualatin region has lower rates, so you should have no trouble finding a great deal in this undervalued submarket.
In the last 90 days, 10 listings have come on the market, which means new availabilities are probably going fast. You'll want to be prepared to make an offer immediately. About 150% of the available space in the Tualatin are subleases, so you might be able to find a shorter term or below market rent. There aren't many listings below 2,000 square feet available, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 1,150 sqft. Most properties in this market are approximately 1 floors. Most buildings in this market were built in 1998 and are Class A.