The typical asking rate per listing is in the $20's per square foot per year. The Tacoma region is experiencing a a rise in rates. In the last 3 months, the median rate increased $5 per sqft per year. That's a 22% rise in rent.
Compared to the rest of the Seattle Metropolitan Area market, the Tacoma region has smaller rates, so you should have no trouble finding a great deal in this discounted submarket.
In the last 90 days, 16 listings have been made available, which means office spaces most likley are going fast. You'll want to be prepared to make an offer immediately. 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 2,290 sqft. Most properties in this area are approximately 3 floors. Most buildings in this area were built in 1975 and are Class B.