Most listings are in the $20's per square foot per year. The Downtown Portland submarket is experiencing a an increase in rates. In the last 3 months, the median rate rose $24 per sqft per year.
In the last 90 days, 26 listings have been made available, which means listings are probably going fast. You'll want to be prepared to tour spaces as quick as possible. About 100% of the available space in the Downtown 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 posted, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 2,080 sqft. Most buildings in this area are approximately 4 stories. Most buildings in this region were built in 1900 and are Class B.
This area is fairly equally mixed residential and commercial. Waste services is the dominant industry in this area. Commute by car is the most popular way to get to work amongst Downtown Portland residents. Commuting between 30 and 45 minutes a day is the norm for those who opt to reside in this part of town.