On average, listings lease in the $10's per square foot per year. The Lakewood region is going through a a boost in rates. In the last 3 months, the median rate went up $18 per sqft per year.
Compared to the rest of the Seattle Metropolitan Area market, the Lakewood submarket has less expensive rates, so you should have no trouble finding a great deal in this discounted region.
In the last 90 days, 6 listings have been listed, which means leases most likley are going fast. You'll want to be prepared to tour spaces as quick as possible. About 650% of the available space in the Lakewood 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 on the market, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 1,800 sqft. Most buildings in this region are close to 2 floors. Most buildings in this area were built in 1980 and are Class C.