The typical asking rate per listing is in the $10's per square foot per year. The Humboldt submarket is seeing a a rise in rates. In the last 3 months, the median rate increased $16 per sqft per year.
In the last 90 days, 13 listings have come on the market, which means new availabilities are probably going fast. You'll want to be prepared to make an offer immediately. About 69% of the listings in the Humboldt are subleases, so you might be able to snag a great spot on a short term. 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 770 sqft. Most properties in this region are approximately 2 stories. Most buildings in this market were built in 1960 and are Class B.