Most listings are in the $10's per square foot per year. The Tukwila region is seeing a decline in rates. In the last 3 months, the median rate decreased $11 per sqft per year. That's a 40% decrease in rent.
Compared to the rest of the Seattle Metropolitan Area market, the Tukwila region has less expensive rates, so you should have no trouble finding a great deal in this discounted submarket.
In the last 90 days, 5 listings have been made available, which means listings most likley are leasing quickly. You'll want to be prepared to tour spaces as quick as possible. 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 10,730 sqft, there are still 0 listings below 2,000 sqft. Most buildings in this area are around 2 stories. Most buildings in this market were built in 1979 and are Class A.