The typical asking rate per listing is in the $20's per square foot per year. The Hillsboro submarket is going through a decline in rates. In the last 3 months, the median rate decreased $7 per sqft per year. That's a 19% decline in rent.
Compared to the rest of the Greater Portland market, the Hillsboro submarket has less expensive rates, so you should have no trouble finding a great deal in this depreciated submarket.
In the last 90 days, 14 listings have been listed, which means listings might be going fast. You'll want to be prepared to make an offer immediately. About 7% of the office spaces in the Hillsboro are subleases, so you will probably need to sign a longer term lease with the landlord directly. There aren't many listings below 2,000 square feet on the market, so finding a space for a small business might be tough.
Even though the median size is 7,140 sqft, there are still 0 new listings below 2,000 sqft. Most buildings in this area are approximately 2 stories. Most buildings in this market were built in 1999 and are Class A.