On average, listings lease in the $20's per square foot per year. The Eugene submarket is experiencing a decrease in rates. In the last 3 months, the median rate decreased $1 per sqft per year. That's a 3% decline in rent.
In the last 90 days, 30 listings have come on the market, which means listings most likley are leasing quickly. You'll want to be prepared to make an offer immediately. About 3% of the office spaces in the Eugene are subleases, so you will probably need to consider the implications of signing a direct lease with the building. 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 1,130 sqft. Most properties in this region are approximately 2 stories. Most buildings in this area were built in 1985 and are Class A.