On average, listings lease in the $30's per square foot per year. The Battle Ground region is seeing a a rise in rates. In the last 3 months, the median rate went up $7 per sqft per year. That's a 28% increase in rent.
Compared to the rest of the Greater Portland market, the Battle Ground region has less expensive rates, so you should have no trouble finding a great deal in this discounted region.
In the last 90 days, 4 listings have been made available, which means leases most likley are leasing quickly. 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 2,300 sqft. Most buildings in this region are close to 2 floors. Most buildings in this region were built in 2008 and are Class A.