Most listings are in the $30's per square foot per year. The Tukwila region is going through a a rise in rates. In the last 3 months, the median rate increased $30 per sqft per year.
Compared to the rest of the Seattle Metropolitan Area market, the Tukwila region has greater rates, and you'll have to negotiate above asking rent to be in this hot submarket.
In the last 90 days, 23 listings have been listed, which means spaces are probably leasing quickly. You'll want to be prepared to tour spaces as quick as possible. About 213% of the office spaces in the Tukwila are subleases, so you might be able to find a shorter term or below market rent. There aren't many listings below 2,000 square feet posted, so finding a space for a small business might be tough.
Even though the median size is 4,150 sqft, there are still 0 office spaces below 2,000 sqft. Most properties in this market are around 2 stories. Most buildings in this region were built in 1979 and are Class A.