In the last 90 days, 10 listings have been listed, which means listings most likley are going fast. You'll want to be prepared to make an offer immediately. About 20% of the available space in the Corvallis 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 posted, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 1,100 sqft. Most properties in this region are close to 2 stories. Most buildings in this region were built in 1997 and are Class A.