What is considered one of the five most common hidden defects in properties?

A bad foundation is indeed regarded as one of the five most common hidden defects in properties due to its significant implications for structural integrity and safety. Foundations are critical as they support the entire structure, and any issues such as cracks, settling, or heaving can lead to severe damage and costly repairs. These problems often go unnoticed during initial inspections because they might not be immediately visible or may not reveal themselves until much later.

While faulty HVAC systems, outdated appliances, and inconsistent water pressure are issues that can certainly arise in properties, they typically affect comfort and efficiency rather than posing immediate threats to the overall stability of the building itself. A bad foundation, on the other hand, can result in ongoing deterioration of the property if not addressed, making it a priority concern for property owners and inspectors alike.