On average, listings lease in the $30'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 $3 per sqft per year. That's a 11% increase in rent.
Compared to the rest of the Greater Portland market, the Tigard region has higher rates, and you'll have to negotiate above asking rent to be in this hot submarket.
In the last 90 days, 20 listings have been made available, which means spaces are probably going fast. You'll want to be prepared to tour spaces as quick as possible. About 5% of the available space in the Tigard are subleases, so you will probably have to focus your search on direct office leases. 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 2,160 sqft. Most buildings in this region are close to 2 floors. Most buildings in this region were built in 1986 and are Class A.