Master suite addition (upscale)
Average cost: $271,470
Return on investment: 50.4%
The worst home renovation project for your money also is the most expensive. This upscale master suite addition costs more than double the midrange master suite we described.
Why so much? For one thing, adding square footage typically is an expensive proposition, and this project adds a 32-by-20-foot master bedroom, lounge area and large, adjacent master bath to the homeís footprint.