Most listings are in the $20's per square foot per year. The Tigard region is seeing a decrease in rates. In the last 3 months, the median rate fell $4 per sqft per year. That's a 12% decline in rent.
Compared to the rest of the Greater Portland market, the Tigard submarket has smaller rates, so you should have no trouble finding a great deal in this undervalued region.
In the last 90 days, 21 listings have been posted online, which means new listings might be leasing quickly. You'll want to be prepared to tour spaces as quick as possible. About 5% of the available leases in the Tigard are subleases, so you will probably need to consider the implications of signing a direct lease with the building. 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 2,250 sqft. Most buildings in this area are around 2 floors. Most buildings in this market were built in 1986 and are Class A.