If you look at the last 6 months with that size built in 2012 or newer, single family, stick built homes, under 1 acre, the average price per sq ft is around $151/ft. However, that is a broad area as Chip mentioned.
Lot's of fluctuation neighborhood to neighborhood, SW vs. SE, etc. and big difference in quality amongst builders in 97702 zip code.
Hope that helps!
Sean w/ Cascade Sotheby's International Realty