House Kua Number Calculator

Your home has its own Kua number — separate from yours — determined entirely by the direction it faces. While your personal Kua number tells you which directions support you, your house’s Kua number tells you whether the building itself is naturally working with that energy or against it.

This is the calculation almost no Feng Shui site offers as a standalone tool. Most calculators give you your personal Kua and stop there, leaving the house side of the equation as an afterthought. Here, you can check your house’s facing direction on its own, or compare it directly against your personal Kua to see how the two interact.

Select your house’s facing direction below to get started.

What Is a House Kua Number?

Just as a person has a Kua number based on their birth year and gender, a house has a Kua number based on the direction its main door faces. This is a core idea in Eight Mansions (Ba Zhai) Feng Shui: buildings, like people, fall into one of eight energy categories, and each category has its own auspicious and inauspicious zones.

A house’s Kua number determines which compass sectors inside that home are considered strong (good for wealth, health, and relationships) and which are weaker. This applies regardless of who lives there — the house’s energy pattern is fixed by its facing direction, the same way a person’s Kua number is fixed by their birth year.

House Kua vs. Personal Kua — What’s the Difference?

This is the question almost every visitor to a Kua calculator eventually asks, and most sites never answer it clearly.

Your personal Kua number is about you — your birth year and gender determine which directions support your individual energy, regardless of where you live.

Your house’s Kua number is about the building — its facing direction determines which compass sectors inside it are naturally strong, regardless of who lives there.

The real value comes from comparing the two. A house with a facing direction that aligns with your personal auspicious directions is considered a strong match. A house whose facing direction lands on one of your inauspicious directions doesn’t mean the home is unlivable — but it does mean more attention is needed for where you place your bedroom, desk, and main living areas inside it.

How to Find Your House’s Facing Direction?

Before you can calculate your house Kua, you need to know which way your home faces. This is simpler than it sounds, and a common point of confusion:

1. Stand at your main front door, facing outward — as if you’re about to leave the house.
2. Use a compass app on your phone (or a physical compass) to note the direction you’re facing.
3. That direction is your house’s facing direction.

A common mistake is measuring the direction of the wall the door is on, rather than the direction you face when walking out through it. For most homes these are the same, but for corner doors or angled entrances, they can differ — when in doubt, always go with the direction you’re physically facing as you exit.

How is the House Kua Number Determined?

Once you know your house’s facing direction, its Kua number follows a fixed mapping based on classical Ba Zhai principles. Each of the eight compass directions corresponds to one of eight house types, each with its own “sitting” direction (the opposite of where it faces) and its own name in the traditional system.

A house facing North, for example, is described as a Kan house, sitting South. A house facing Southwest is a Kun house, sitting Northeast. Each of the eight facing directions maps to a different house type — and like personal Kua numbers, houses are also split into East Group and West Group categories, meaning some house types pair more naturally with East Group people, and others with West Group people.

Why House Kua Number Matters More Than People Realise?

A house’s facing direction affects more than just abstract “energy”. It determines where the strongest and weakest sectors of the home are located. If you’re deciding where to put your bedroom, your home office, or even your kitchen, the house’s own Kua sectors interact with your personal directions to either reinforce or work against each other.

This is especially relevant for two situations:

Buying or renting a home. Knowing a property’s facing direction before you commit lets you assess whether it’s likely to support or work against your personal Kua energy — useful context alongside the usual practical considerations.

Arranging an existing home. If you already live somewhere and can’t change the facing direction, understanding your house’s Kua number still tells you which interior sectors are naturally stronger, so you can prioritise those zones for the rooms that matter most to you.

Personal Kua + House Kua — Checking Compatibility

If you know both your personal Kua number and your house’s facing direction, you can check directly whether the two align — whether your house’s group (East or West) matches your own, and whether the home’s strongest sector overlaps with one of your four personal auspicious directions.

A match between your personal group and your house’s group is generally considered a stronger natural fit. A mismatch isn’t a dealbreaker — it simply means the interior layout (where you sleep, where you work) becomes more important in compensating for the difference.

FAQ

Can two houses facing the same direction have different Kua numbers?

No. The house Kua number is determined solely by facing direction — any two houses facing the exact same direction will have the same house Kua number, regardless of size, age, or layout.

Does the house Kua number change if I renovate or extend the home?

No, as long as the main facing direction stays the same. The house Kua is tied to the orientation of the main entrance, not the floor plan.

What if my house has more than one front door?

Use the door that functions as your actual main entrance — the one used most regularly for entering and exiting. If two doors are used equally, Feng Shui practitioners typically default to the original architectural main entrance.

Is a house’s Kua number more important than my personal Kua number?

Neither takes priority over the other — they work together. Your personal Kua number guides where you specifically should sleep, sit, and work. Your house’s Kua number tells you where the home’s own strong and weak sectors are located. The most complete approach considers both.

My personal Kua group doesn’t match my house’s group. Is that a problem?

Not necessarily. It means the house’s natural strengths don’t automatically align with your personal directions, which makes it more important to focus on placing your bedroom and desk in directions that suit you specifically, rather than relying on the house’s overall orientation alone.