Real estate agents will tell you that potential buyers want square footage, pristine condition and lots of light. So a brand-new room that has the word "sun" in it, it has to be great for resale value, right?
Your first clue: The word "addition" -- which means expanding the footprint of your home -- indicates that this is not a renovation for the faint of heart (or wallet). "It's one of the more expensive projects," Alfano says.
While it seems simple enough, the national average for a sunroom addition is $75,224, according to the report. Homeowners can expect to recoup about 48.6 percent when they sell.
That doesn't mean that adding a sunroom is always a bad move.
If your home needs another common area, a sunroom could be the answer, says Katie Severance, co-author of "The Complete Idiot's Guide to Selling Your Home." An addition is best considered in the context of the whole home, she says. "The doctor has to treat the whole patient. You have to look at the house and say 'What's out of balance?'"