Generic fengshui lists disagree with each other because they're answering an incomplete question. A property has a fixed structure, but the classical framework scores a relationship: this structure, for this occupant. The occupant half comes from BaZi (八字) — the four-pillar chart cast from your birth date, time and place. Here's how the match actually works in the Zhai methodology, and — in keeping with house policy — what it can't do.
| Example occupant | Example property | Cycle | Layer reading |
|---|---|---|---|
| Earth day master | Metal-sector tower, west-facing | Earth generates Metal (sheng) | Productive harmony — the pairing used in our MBS case study (75/100) |
| Weak Fire day master | Water-dominant profile (north-facing, water adjacency) | Water controls Fire (ke) | Friction — drops the layer toward the low band |
| Strong Wood day master | Water-dominant profile | Water generates Wood (sheng) | Support — same property, opposite verdict |
Read the second and third rows again — same property, opposite verdicts. That's the entire point of the layer, and why a checklist or a generic "lucky direction" article can't settle a disagreement between two real charts.
In the Zhai composite, BaZi compatibility is 40% of the score; the property's structural quality is 60%. The weighting is deliberate: the chart-to-property mechanism is classical doctrine — tagged [Tradition says], with no empirical support for causal effects — so the measurable layer (light, sha, outlook, layout) keeps the controlling share. A catastrophic structure can't be rescued by a flattering chart, and the form-first veto enforces exactly that.
No honest reading of the evidence supports BaZi-property matching as a causal lever on wealth, health or luck. Zhai's reports tag every chart-derived recommendation [Tradition says], log forward-looking claims in a falsifiability ledger, and never prescribe purchases — no talismans, no cures, no upsell. If a practitioner tells you a chart mismatch requires a S$3,000 remediation, you now know which tag that claim deserves.
Exact time gives the full four-pillar chart — the hour pillar shapes how strong your day master reads, which changes which elements help you. Without it, Zhai computes a day-level chart and widens the verdict bands rather than guessing. The audit still works, just at lower resolution, and the report says so explicitly.
Normal — two charts rarely favour identical element profiles. The couple version (S$59) computes both charts, weighs conflicts explicitly, and shows which compromises cost least. What it never does is pretend one chart doesn't exist.
No causal claim survives honest grading. The match is genuinely useful for articulating preferences, breaking ties, and pricing belief effects — and Zhai weighs it at 40% precisely so the measurable property layer keeps the larger share.
The Property Quick-Check (S$39 solo / S$59 couple) computes your chart (solar-time corrected, ~100 cities) and scores it against the specific unit you're viewing. Want the chart itself, in depth? The Full BaZi 12-Month Forecast (S$39) maps your year with logged, falsifiable predictions.