A 200-square-foot sunroom addition, including footings and slab-on-grade foundation, post-and-beam construction that’s exposed on the interior, efficient windows, 10 operable skylights, ceiling fan, tile floor, and window shades, costs an average of $72,179 according to Remodeling magazine’s 2013 Cost vs. Value Report. You can expect to get about $33,529 of that investment (46.5%) back at resale, according to the study.
The highest rate of return on a sunroom addition is in the sunny Pacific West. In San Diego, for example, the average cost is $81,682 and the return is $42,188, or 51.6%. The lowest payback is in the west-north-central region, where the average cost is $71,905 but the payback is only $30,246 — a 42.1% return.
Wherever you live, the key to maximizing your return is to avoid over-improving. That means building a sunroom addition only if neighboring houses of similar style, size, and value tend to have them.
Of course, return on investment shouldn’t be your only concern when considering a sunroom addition—or any home improvement. Do the project because you want to enjoy it for years to come, and then consider whatever payback you’ll wind up getting when you sell in five or more years as found money.
National average cost, 200-square-foot sunroom addition, with standard appointments:
Job Cost: $72,179
Resale Value: $33,529
Cost Recoup: 46.5%