On average, listings lease in the $10's per square foot per year. The Everett submarket is going through a decrease in rates. In the last 3 months, the median rate fell $1 per sqft per year. That's a 7% decrease in rent.
Compared to the rest of the Seattle Metropolitan Area market, the Everett region has lower rates, so you should have no trouble finding a great deal in this undervalued submarket.
In the last 90 days, 10 listings have been listed, which means leases most likley are going fast. You'll want to be prepared to tour spaces as quick as possible. 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 1,040 sqft. Most properties in this area are around 2 floors. Most buildings in this area were built in 1981 and are Class A.