On average, listings lease in the $30's per square foot per year. The Issaquah submarket is going through a a boost in rates. In the last 3 months, the median rate went up $9 per sqft per year. That's a 30% increase in rent.
Compared to the rest of the Seattle Metropolitan Area market, the Issaquah region has more expensive rates, and you'll need to make a great offer to be in this hot region.
In the last 90 days, 1 listings have been listed, which means office spaces are probably leasing quickly. You'll want to be prepared to make an offer immediately. About 700% of the listings in the Issaquah 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 available, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 820 sqft. Most properties in this area are approximately 2 floors. Most buildings in this market were built in 1992 and are Class A.