Most listings are in the $20's per square foot per year. The Tigard submarket is going through a a boost in rates. In the last 3 months, the median rate rose $25 per sqft per year.
Compared to the rest of the Greater Portland market, the Tigard region has less expensive rates, so you should have no trouble finding a great deal in this depreciated submarket.
In the last 90 days, 58 listings have been posted online, so you'll want to check back regularly for new listings. About 47% of the available space in the Tigard are subleases, so you might be able to sign a shorter term by taking over a previous lease. 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 1,690 sqft. Most buildings in this market are approximately 2 floors. Most buildings in this area were built in 1986 and are Class A.