Three different ways to look at a home
Start with the physical arrangement: doors, windows, rooms, circulation and what is outside. Then consider compass orientation. In some methods, the period associated with a building also affects its chart. These are different layers of a reading, not interchangeable ways to reach the same answer.
Ba Zhai · Eight Mansions
Ba Zhai groups and interprets directions within a traditional system. A practitioner needs to establish the orientation and the particular method being used before assigning sectors. A chart for one home should not simply be copied onto another.
Xuan Kong Fei Xing · Flying Stars
Flying Stars uses numerical patterns associated with time and direction. A natal building chart and an annual chart are not the same thing. Building history and a sufficiently reliable facing direction matter; an annual number alone is not a complete personal assessment.
Form · The arrangement you can see
The shapes and relationships of entrances, rooms, roads, water and nearby buildings form another part of the reading. These observations help connect a chart to the actual home: where you sleep, sit, cook or enter, and what can realistically be changed.
What a useful reading gives you
You should be able to locate the area being discussed, understand its traditional interpretation and see what to do with it. The result might be a different desk position, an area to keep quieter, or an explanation of why an existing arrangement can stay. A good report also respects fixed walls, rental restrictions and how the household lives.
Where the tradition ends
Traditional interpretations of fortune, relationships or wellbeing are not scientific predictions or guarantees. A reading cannot establish a medical diagnosis, a property’s structural safety or its future investment value. For those questions, use the relevant qualified professional.
Further reading on traditional terminology: International Feng Shui Guild and Joey Yap on facing direction and building period. These references explain traditional methods, not guaranteed outcomes.