On average, listings lease in the $10's per square foot per year. The Everett submarket is going through a an increase in rates. In the last 3 months, the median rate increased $1 per sqft per year. That's a 7% rise in rent.
Compared to the rest of the Seattle Metropolitan Area market, the Everett submarket has less expensive rates, so you should have no trouble finding a great deal in this undervalued submarket.
In the last 90 days, 41 listings have been listed, so you'll want to check back regularly for new listings. 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 2,000 sqft. Most buildings in this region are around 2 stories. Most buildings in this region were built in 1980 and are Class B.