Taking on an investment property can mean lots of work ahead. Turning a diamond in the rough into, well, a diamond, isn’t always easy. Investment property upgrades require a lot of sweat, know-how, and on occasion, the intelligence to know when it’s not a DIY project. Even for a seasoned real estate investor, there are some property flip tasks that should be left to the professionals. Whether for safety reasons, code enforcement, or the sheer work scope of the project, these are the property upgrades for which you should hire a pro.