A buyer should check each room for damage and test all the major systems, plumbing fixtures, and appliances, according to Rock. “I usually take the approach of trust but verify,” he says. “I trust that there were no major system failures, and that the seller has not caused any significant damages to the property since the professional home inspection was performed, but still perform some reasonable verifications.”  While checking to make sure every outlet, appliance, and system is functioning may seem tedious, it can give you peace of mind and potentially help you save money. “A proactive approach that takes a few extra minutes prior to closing will save you many headaches after closing,” Conti says.