The typical asking rate per listing is in the $10's per square foot per year. The Federal Way region is experiencing a a boost in rates. In the last 3 months, the median rate increased $1 per sqft per year. That's a 8% increase in rent.
Compared to the rest of the Seattle Metropolitan Area market, the Federal Way submarket has lower rates, so you should have no trouble finding a great deal in this undervalued submarket.
In the last 90 days, 14 listings have been made available, which means office spaces are probably going fast. You'll want to be prepared to tour spaces as quick as possible. About 14% of the listings in the Federal Way 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 1,160 sqft. Most buildings in this region are around 2 floors. Most buildings in this market were built in 1985 and are Class A.