On average, listings lease in the $20's per square foot per year. The Tacoma submarket is going through a an increase 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 smaller rates, so you should have no trouble finding a great deal in this undervalued submarket.
In the last 90 days, 13 listings have been made available, which means leases might be leasing quickly. You'll want to be prepared to tour spaces as quick as possible. About 108% of the listings in the Tacoma 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 940 sqft. Most properties in this market are close to 2 floors. Most buildings in this area were built in 1975 and are Class B.