Browse modern mountain house plans with big windows, outdoor living (porches, decks, etc.), rustic charm & more! Order a Cost-to-Build Report. Enjoy expert support. Note: regional collections like this may include a variety of plans from designers in the region, designs that have sold there, or ones that simply remind us of the area in their styling. 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.