On average, listings lease in the $20's per square foot per year. The West Slope submarket is seeing a a rise in rates. In the last 3 months, the median rate went up $22 per sqft per year.
Compared to the rest of the Greater Portland market, the West Slope submarket has lower rates, so you should have no trouble finding a great deal in this discounted region.
In the last 90 days, 1 listings have come on the market, which means spaces are probably leasing quickly. You'll want to be prepared to make an offer immediately. About 100% of the available space in the West Slope are subleases, so you might be able to sign a shorter term by taking over a previous lease. There aren't many listings below 2,000 square feet available, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 960 sqft. Most properties in this area are around 2 floors. Most buildings in this region were built in 2005 and are Class B.