Which of the following does NOT belong to the category of visible defects?

The concept of visible defects refers to issues in a property that can be easily observed and identified upon inspection. In this context, defects of omission involve failures to act or include essential elements during construction or renovation that are not always immediately visible. Examples of such omissions could include not installing necessary safety features or leaving out specific materials, which may lead to potential issues down the line but are not visible at first glance.

On the other hand, improper installation, installation of low-quality goods, and inadequate maintenance represent observable problems. These issues can typically be seen and assessed during a property inspection. For instance, improper installation might lead to misaligned fixtures that are easily noted, low-quality materials can visibly deteriorate, and signs of inadequate maintenance, such as peeling paint or water stains, are often apparent to an observer.

Understanding these distinctions helps in assessing properties and identifying areas that need remediation or might influence a potential buyer's decision. Recognizing visible defects is crucial for maintaining property value and ensuring habitability.