On average, listings lease 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 $4 per sqft per year. That's a 14% decline in rent.
Compared to the rest of the Greater Portland market, the Hillsboro region has smaller rates, so you should have no trouble finding a great deal in this discounted region.
In the last 90 days, 31 listings have been made available, which means spaces are probably leasing quickly. You'll want to be prepared to make an offer immediately. About 10% of the listings in the Hillsboro 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 posted, so finding a space for a small business might be tough.
Even though the median size is 2,530 sqft, there are still 0 new availabilities below 2,000 sqft. Most buildings in this region are close to 2 floors. Most buildings in this market were built in 1999 and are Class A.