On average, listings lease in the $50's per square foot per year. The Portland submarket is experiencing a a rise in rates. In the last 3 months, the median rate increased $50 per sqft per year.
In the last 90 days, 0 listings have been listed, which means office spaces might be leasing quickly. You'll want to be prepared to make an offer immediately. About Inf% of the available space in the Portland are subleases, so you might be able to find a shorter term or below market rent. 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 1,140 sqft. Most buildings in this market are approximately 2 floors. Most buildings in this region were built in 1979 and are Class B.