Compared to the rest of the Greater Portland market, the Milwaukie submarket has smaller rates, so you should have no trouble finding a great deal in this depreciated region.
In the last 90 days, 5 listings have come on the market, which means new availabilities most likley are leasing quickly. You'll want to be prepared to tour spaces as quick as possible. 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 1,010 sqft. Most properties in this area are around 2 stories. Most buildings in this market were built in 1988 and are Class B.