Most listings are in the $20's per square foot per year. The Burien submarket is going through a an increase in rates. In the last 3 months, the median rate rose $1 per sqft per year. That's a 7% increase in rent.
Compared to the rest of the Seattle Metropolitan Area market, the Burien submarket has less expensive rates, so you should have no trouble finding a great deal in this undervalued submarket.
In the last 90 days, 2 listings have been posted online, which means new listings might be leasing quickly. You'll want to be prepared to make an offer immediately. 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 4,700 sqft, there are still 0 listings below 2,000 sqft. Most buildings in this market are close to 2 floors. Most buildings in this area were built in 1965 and are Class B.