Which of the following is a potential external disclosure that may affect property value?

Access to public transit is a significant external factor that can greatly influence property value. When properties are situated near reliable public transportation options, they often become more desirable to potential buyers or renters. This is because convenient access to transit can enhance everyday commuting, reduce transportation costs, and improve the overall quality of life for residents. Locations that provide easy access to bus or train services are frequently viewed as more accessible and can attract a broader demographic, from young professionals to families and retirees.

In contrast, while factors like septic system details and property insurance details are important for property ownership, they are typically internal to the property and do not significantly influence property value on a larger scale. Neighborhood income levels can reflect the demographic qualities of an area, but that information is more indirect in terms of its effect on value compared to the immediate access to transport options. Public transit stands out as a direct and tangible feature that prospective buyers consider when assessing the allure and salability of a property.