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.
Shopping for a sunroom: 1  Building an addition isn't the only cost; furniture and other decorating touches such as curtains or artwork can add $250-$1,000 to a simple screened porch and $1,000-$10,000 for interior-quality decor (to match the rest of the home) in a three-or four-season sunroom. Nationwide, average regional prices range from $66,046 -$83,463 to custom-build a 200-square-foot four-season sunroom addition from the ground up, with a slab foundation, post-and-beam framing, insulation, glass windows with screens, window shades, a ceiling fan and a tile floor, according to Remodeling Magazine.