The typical asking rate per listing is in the $20's per square foot per year. The King City region is experiencing a a rise in rates. In the last 3 months, the median rate rose $24 per sqft per year.
Compared to the rest of the Greater Portland market, the King City region has lower rates, so you should have no trouble finding a great deal in this undervalued submarket.
In the last 90 days, 0 listings have been listed, which means leases are probably going fast. You'll want to be prepared to make an offer immediately. About NaN% of the listings in the King City are subleases, so you will probably have to focus your search on direct office leases. 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 1,360 sqft. Most buildings in this region were built in 1978 and are Class B.