On average, listings lease in the $30's per square foot per year. The Kirkland submarket is going through a a rise in rates. In the last 3 months, the median rate increased $7 per sqft per year. That's a 20% increase in rent.
Compared to the rest of the Seattle Metropolitan Area market, the Kirkland region has more expensive rates, and you'll need to pay a premium to be in this hot region.
In the last 90 days, 25 listings have been posted online, which means listings most likley are leasing quickly. You'll want to be prepared to tour spaces as quick as possible. About 12% of the available space in the Kirkland 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.
Even though the median size is 4,000 sqft, there are still 0 office spaces below 2,000 sqft. Most properties in this area are approximately 2 stories. Most buildings in this region were built in 1987 and are Class A.