The requirement for having two doors between a kitchen and a bathroom is not a universally mandated building code. It's more of a traditional design practice that some people follow for reasons related to privacy, hygiene, and odor control. However, it's important to note that building codes and regulations can vary depending on your location and the specific building you are working on. Local building codes take precedence over general design practices, so it's essential to consult with your local building authorities to ensure compliance with the regulations in your area.
The reasoning behind having two doors between a kitchen and a bathroom is to create a buffer zone that helps prevent odors and contaminants from the bathroom spreading into the kitchen. The idea is that if there are two doors, the chances of smells and bacteria escaping from the bathroom are reduced. In larger or more formal houses, this design may be more common due to the desire for a higher level of separation and privacy.
However, many modern homes do not follow this practice, and the presence of two doors between a kitchen and a bathroom is not a strict requirement in most places. In smaller homes or apartments, it is more common to have a single door separating the two spaces.
In any case, when designing or renovating your home, it's crucial to adhere to the local building codes and consult with professionals, such as architects or contractors, to ensure that your design meets all the necessary safety and regulatory requirements.