Eight Mansions (Ba Zhai) Feng Shui: Compass Directions and Living Spaces

What is Eight Mansions (Ba Zhai) Feng Shui?

Eight Mansions Feng Shui (八宅风水) is an ancient spatial compass method that calculates a home's Gua (Trigram) from its facing and sitting direction, dividing the floor plan into four auspicious and four inauspicious sectors ruled by wandering stars.

Ba Zhai, Eight Mansion, Feng Shui 8 Mansions: One Method, Several Names

Search for this method and you will run into several spellings of the same thing. Ba zhai feng shui is simply the pinyin for 八宅风水, while eight mansion and feng shui 8 mansions are the renderings most English-language books and forums use. All three point to one classical system: read a dwelling from its sitting and facing direction, then map eight wandering stars onto a nine-grid floor plan. The names differ; the rules do not.

The only real variation is how much an author layers on top. Some teachers keep the fixed Ba Zhai grid and stop there, while others fold in annual Flying Star timing. For room placement, start with the fixed grid — it is the part that does not change from year to year.

The Eight Wandering Stars at a Glance

Every Eight Mansions chart distributes eight wandering stars across the nine-grid of your home — four that gather favorable energy and four that drain it:

• Sheng Qi (生气, Life Force) — the most auspicious sector: vitality, growth, and career momentum. Ideal for the master bed or your main desk.
• Tian Yi (天医, Heavenly Doctor) — health and recovery. The best bedroom sector for anyone convalescing or chronically tired.
• Yan Nian (延年, Longevity) — relationships and harmony. Suited to the couple's bedroom or negotiation spaces.
• Fu Wei (伏位, Stability) — calm and focus. The natural home for a study, meditation corner, or altar.
• Jue Ming (绝命, Severed Fate) — the most draining sector. Keep beds and desks out; assign drains, storage, or the bathroom here.
• Wu Gui (五鬼, Five Ghosts) — quarrels and restless energy. A workable spot for the kitchen or utility room.
• Liu Sha (六煞, Six Killings) — emotional turbulence and legal hassles. Assign bathrooms or pass-through corridors.
• Huo Hai (祸害, Mishaps) — minor accidents and friction. Storage rooms and other low-traffic zones belong here.

Mountains for Stillness, Waters for Activity

The foundational rule of Eight Mansions is that high and solid objects (Mountains/山) belong in auspicious sectors like Sheng Qi (Life Force) and Tian Yi (Heavenly Doctor), while active and low objects (Waters/水) such as drains and entrances belong in draining sectors like Jue Ming (Severed Fate).

Finding Your True Front Door Facing

Stand inside your primary entrance looking outward toward the street with a digital compass. Align the degrees to identify whether your home belongs to the East Group or West Group of dwellings.

How to Find Your Eight Mansion (and Your Gua Number)

Finding your eight mansion means two separate lookups. The first is your dwelling's chart, derived from the compass bearing of your main door. The second is your personal Gua number, derived from your birth year and gender. The dwelling chart tells you which sectors of the home are strong; your personal Gua tells you which of the four auspicious directions — Sheng Qi, Tian Yi, Yan Nian, and Fu Wei — belong to you. Pairing the two prevents the most common mistake in Ba Zhai practice: optimizing a home for someone else's chart.

open the free eight mansion calculator and it returns your dwelling’s house gua, the nine-grid overlay and sector-by-sector guidance in one pass — no manual trigram math. Your personal Gua is an optional second layer: add your birth year and gender and the tool computes that too, using the year-boundary rule explained below.

• Dwelling chart — set by the facing and sitting direction measured at your main door.
• Personal Gua — set by your birth year and gender, following the Later Heaven trigram sequence.
• The overlay — where the home’s nine sectors fall on your floor plan; your personal directions are matched against it by hand.

Eight Mansions Feng Shui Calculator: Find Your Gua Number in One Minute

An Eight Mansions calculator does both lookups above in one pass. Give it the true facing of your main door and it builds the nine-sector grid, then returns your dwelling chart with the four supportive sectors and the four to keep quiet. Add your birth year and gender and it also returns your personal Gua number — the layer that follows you from home to home.

Your Gua number comes from birth year and gender alone. Take the last two digits of your birth year, apply the century rule (1901–1999: men 100 − yy, women yy − 4; 2000–2099: men 99 − yy, women yy + 6), divide by nine and read the remainder. A remainder of five has no Gua of its own — men take Kun 2, women take Gen 8. Numbers 1, 3, 4 and 9 make up the East group; 2, 6, 7 and 8 make up the West group, and each group shares the same four favourable directions.

The table below lists all eight Gua numbers with their four favourable directions (Sheng Qi, Tian Yi, Yan Nian, Fu Wei) and four draining ones (Jue Ming, Wu Gui, Liu Sha, Huo Hai). Read your own row, then open the free Eight Mansions tool to overlay your personal Gua on the dwelling chart. Uncertain about the birth data behind the lookup? Start with why a BaZi chart needs true solar time; for the personal chart itself, see the BaZi calculator walkthrough.

Map Your Floor Plan in Three Steps (Free Tool)

1. Upload a photo of your floor plan (or load the sample plan) in the free Eight Mansions tool.
2. Align the plan to the compass bearing you just measured at your front door, then set the facing direction in degrees.
3. Read the nine-grid overlay — auspicious sectors and draining sectors — and place beds, desks, and water elements accordingly.

Skip the manual math: open the free Eight Mansions Feng Shui tool and get your home's nine-grid overlay in under a minute.

Practical DIY Living Space Adjustments

You do not need expensive superstitious trinkets. Simple room-by-room alignment—ensuring your primary bed rests in an auspicious sector and active noise stays out of quiet zones—harmonizes environmental energy.

Eight Mansions FAQ

Is Eight Mansions accurate for apartments and high-rises? Yes. For a condo or apartment, measure the facing at the main entrance of your unit (the door you use daily), not the building's gate. The nine-grid then overlays your unit's floor plan.

What if my front door sits in an inauspicious sector? Don't panic — a door functions as moving “water,” which is exactly what draining sectors can absorb. What matters more is keeping your bed, desk, and stove inside the auspicious sectors; the door's job is simply to not occupy a star that should stay still.

How is Eight Mansions different from Flying Star feng shui? Eight Mansions (Ba Zhai) assigns a fixed energy map to the dwelling based on its sitting direction — it changes only if the building changes. Flying Star adds a time dimension, rotating stars annually. Start with Ba Zhai for room placement; layer annual Flying Stars for yearly fine-tuning.

Do I need to buy cures or talismans? No. Classical Eight Mansions adjusts function and placement — what goes where — rather than relying on objects. If a bed must stay in a draining sector, repositioning it within the room often already solves the problem.

Ba Zhai FAQ: Compass, Charts, and First Questions

What is ba zhai feng shui? Ba zhai feng shui is the pinyin name for Eight Mansions feng shui, the classical method that divides a home into four favorable and four draining sectors based on its sitting and facing direction. It is one of the oldest room-placement systems in Chinese geomancy, and it remains the practical starting point before adding time-based methods.

How do I find my eight mansion? Measure the bearing of your main door with a compass app, note the sitting direction opposite it, and look up the resulting dwelling Gua. Your personal Gua comes from your birth year and gender. Together they tell you which rooms to prioritize. A free feng shui compass guide will build the dwelling chart and the nine-grid overlay from your door bearing; the personal Gua still needs the birth-year lookup.

Can I use ba zhai without a compass? Yes, with one caveat. You can estimate the facing from the direction your building fronts onto the street, or from a phone compass app, but a few degrees of error can push a sector across a boundary. For most apartments the daily-use door is the reference point, and an approximate bearing is usually enough to place a bed or desk. If two sectors score almost equally, verify with a physical compass before moving furniture.

Does Eight Mansions work with my BaZi chart? They answer different questions. Ba zhai describes your space; BaZi (Four Pillars) describes you — your elemental balance, Ten Gods, and luck cycles. Many readers start with the home chart because rooms are easier to change, then look at their own chart for timing. If you do not know your exact birth hour, birth time rectification can reconstruct the missing pillar before you read it.

What is the difference between Ba Zhai, Eight Mansion and Feng Shui 8 Mansions? Nothing but spelling. Ba zhai is the pinyin, Eight Mansions is the translation, and “feng shui 8 mansions” is how people type it into a search box. All three name one method and one chart.

Can I find my eight mansions with just my phone compass? Yes, with one caveat. A phone compass is accurate enough to place a sector, but the boundaries sit at 22.5°, 67.5° and so on: if your reading lands within about three degrees of one, measure again before you commit to a chart.

What if I don't know my front door's facing direction? Three options, in order of accuracy: measure it with a compass app while standing in the doorway; read it from a floor plan plus the building's street frontage; or start with a rough direction and refine later. The free tool accepts a rough direction, so you are never blocked from seeing a chart.