On average, listings lease in the $20's per square foot per year. The Tacoma submarket is experiencing a a boost in rates. In the last 3 months, the median rate went up $8 per sqft per year. That's a 50% rise in rent.
Compared to the rest of the Seattle Metropolitan Area market, the Tacoma region has less expensive rates, so you should have no trouble finding a great deal in this depreciated region.
In the last 90 days, 13 listings have been made available, which means listings most likley are going fast. You'll want to be prepared to tour spaces as quick as possible. About 108% of the available leases in the Tacoma 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 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 940 sqft. Most buildings in this region are close to 2 stories. Most buildings in this market were built in 1975 and are Class B.