The typical asking rate per listing is in the $30's per square foot per year. The Tacoma submarket is going through a a boost in rates. In the last 3 months, the median rate rose $8 per sqft per year. That's a 33% increase in rent.
Compared to the rest of the Seattle Metropolitan Area market, the Tacoma submarket has greater rates, and you'll have to negotiate above asking rent to be in this hot submarket.
In the last 90 days, 12 listings have come on the market, which means listings are probably 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.
The standard measurement for office space in this area is around 2,000 sqft. Most properties in this region are approximately 3 stories. Most buildings in this area were built in 1975 and are Class B.