If you're planning to build a home in Washington State, a Washington floor plan from the collection below could be your best bet.**
As you explore the house plans in this collection, you'll notice many Craftsman and bungalow designs that sport a lot of natural elements, like stone, wood, etc. Contemporary/modern floor plans are also relatively common in this area, as Washington State, like all of the pacific northwest, tends to embrace sustainable design.
As you shop, remember that almost every house plan on HomePlans.com can be customized to meet your exact requirements. Furthermore, take comfort in the fact that there's always an exception to "the rules." Just because the Northwest is known for the aforementioned styles doesn't mean that building, say, a Victorian or colonial house plan is, in any way, out of the question. It all depends on the neighborhood you're building within--what it allows--and what your personal tastes are.
** Please note that some locations may require specific engineering and/or local code adoptions. Be sure to check with your contractor or local building authority to see what is required for your area.