The classical 八宅 (Eight Mansions) doctrine assigns every door × master bedroom configuration to one of eight outcome classes. The four auspicious classes are ranked from most-auspicious (生氣宅) to mildly-auspicious (伏位宅); the four inauspicious classes are ranked from mildly-inauspicious (禍害宅) to most-inauspicious (絕命宅). Each class has a defining classical phrase, a characteristic register that households commonly experience, and (for some) a key caveat that warrants attention.
This page is the diagnostic-overview hub for the eight classes. The page shows what each outcome looks like in practice and which trigram pairings produce it. The Singapore HDB & Condo hub shows how Singapore’s templated property layouts concentrate around four of the eight classes specifically.
The eight classes, ranked
生氣宅 · Sheng Qi Generating Breath · 1 of 8 (most auspicious)
Key register: Career advancement, household prosperity, generative momentum
生氣宅：陰陽正配富貴局，財丁兩旺，子孫繁茂，家業興旺。
Households commonly report sustained career advancement, generational wealth accumulation, growing family lines, and the kind of forward-momentum that compounds over decades. Among the eight classical outcomes, this is the strongest auspicious register.
天醫宅 · Tian Yi Heavenly Doctor · 2 of 8
Key register: Health, immunity, recovery from chronic conditions
天醫宅：百病可解，福祿並至，子嗣安寧，闔家安康。
Households commonly report strong constitutional health, fast recovery from illness, low rates of chronic disease, and the kind of restorative quality that supports longevity. Reliably auspicious for households with elderly occupants or anyone managing existing health conditions.
延年宅 · Yan Nian Longevity · 3 of 8
Key register: Marriage longevity, partnership stability, intergenerational harmony
延年宅：陰陽正配，夫妻和順，子孫忠孝，福壽齊全。但久居有克妻之應，當留意女主之身。
Households commonly report stable marriages, durable partnerships, and intergenerational harmony — though the classical text flags a long-residency caveat regarding the female occupant's health. Couples in stressed marriages tend to find this configuration helps; couples in healthy marriages benefit but should be attentive to the female occupant's health register over multi-decade residency.
Classical caveat: 久居克妻
伏位宅 · Fu Wei Stable Position · 4 of 8
Key register: Stability, status quo preservation, gentle support without dramatic change
伏位宅：本位歸元，根基穩固，平和守成，缺乏進取之機。
Households commonly report a stable, predictable register — income holds steady, relationships preserve their existing state, no dramatic upside but also no dramatic downside. Most favourable for retirees, occupants in long-term consolidation phases, and households whose primary need is grounding rather than growth.
禍害宅 · Huo Hai Calamity · 5 of 8 (mildly inauspicious)
Key register: Petty disputes, minor recurring accidents, gossip cycles, low-grade friction
禍害宅：小人是非，口舌爭端，疾病累及，事不順遂。
Households commonly report low-grade ongoing friction — petty workplace disputes, minor recurring accidents, gossip cycles within the household or the family, the slow erosion of energy through accumulated small irritations rather than through any single dramatic event. The mildest of the four inauspicious outcomes; manageable with site-specific correction.
六煞宅 · Liu Sha Six Killings · 6 of 8
Key register: Legal disputes, contractual breakdowns, romantic rupture, multi-front harm
六煞宅：官非口舌，桃花破損，金錢損耗，情義變故。
Households commonly report patterns of legal-adjacent friction (contract disputes, formal complaints, court appearances), romantic-relationship rupture, and the kind of multi-source pressure that hits authority, finances, and emotions simultaneously rather than sequentially. The classical attribution ‘six killings’ refers to the spread — harm from multiple directions at once rather than one concentrated source.
五鬼宅 · Wu Gui Five Ghosts · 7 of 8
Key register: Theft, betrayal by trusted associates, sudden adversarial conflict, paranoid sleep
五鬼宅：暗害陰謀，盜賊損失，朋友反目，諸事多舛。
Households commonly report patterns of betrayal by close associates, opportunistic theft, sudden conflict from previously-trusted relationships, and disturbed sleep with paranoid waking patterns. The classical attribution ‘five ghosts’ refers to the unexpected, multi-source nature of the friction — harm arrives from quarters the household didn’t anticipate and from people previously assumed safe.
絕命宅 · Jue Ming Severed Fate · 8 of 8 (most inauspicious)
Key register: Severe financial loss, life-threatening illness, total reversal of fortune, lineage threat
絕命宅：陰陽相剋，丁財兩虧，重病纏身，孤苦伶仃。
Of all eight classical outcomes, this is the most-watched. Households commonly report patterns of severe financial loss, life-threatening illness affecting primary occupants, fertility difficulties or reduced descendants, and the kind of total fortune-reversal that classical doctrine attributes to severed-fate qi. This configuration is the strongest case for either pre-purchase rejection or post-purchase audit-driven structural correction.