Here the river flows through the Hells Canyon National Recreation Area and forms the boundary between Idaho and Oregon. The 652,488-acre recreation area includes the nearly 215,000-acre Wells Canyon Wilderness with the Snake River flowing through and adjacent to it.
According to Remodeling Magazine, a 200-square foot sunroom addition with footings and slabs-on-grade foundation can cost up to $70,000, while a survey conducted on HomeAdvisor.com found the average cost on sunroom additions ran around $16,315.
Family Room. The average cost of a family room addition nationally is $79,000. This cost includes adding a 16-by-25 foot room, fiberglass insulation, vinyl siding, pre-finished hardwood flooring and atrium-style exterior doors.unroom. The average cost of a sun room nationally is $72,000. The cost includes a 200-square-foot slab addition, vinyl or aluminum awnings, casement windows and screens.