There’s a lot of talk about renovations and the best way to handle them. Unfortunately for homeowners, much of the advice out there often contradicts itself. Talk to one contractor, and he might tell you to always expect a reno to cost 10 percent more than you expected; talk to another, and he’ll insist you should never pay a penny more than the initial bid. Navigating these waters can be tricky, so always do your research, follow your gut—and disregard these common renovation beliefs. Because when it comes to upgrading your home, you can’t believe anything you hear.