Vastu, honestly
Not a law to obey, not a superstition to mock. We read each rule through building science and sort it into one of three honest buckets — the physics, the contingent, and the convention.
Say the word Vastu at an Indian dinner table and the room splits in two. On one side sit the believers, for whom every direction carries a verdict and a wrongly-placed kitchen can unsettle a family's fortune. On the other sit the sceptics, who file the whole thing under superstition and change the subject. Both sides think the argument is settled. Both are wrong.
There is a third position, and almost nobody in India is willing to hold it — because it asks more of you than either devotion or contempt. It says: stop asking whether Vastu is true, and start asking what each rule was actually for.
Read that way, Vastu stops being a faith or a fraud and becomes something more interesting — a four-thousand-year-old body of building knowledge, written in the only language its age had: ritual, direction and deity. Strip the language away and three very different things fall out. Some of it is climate physics that still works exactly as intended. Some of it worked under conditions we no longer build in, and quietly expired. And some of it was never about the physical world at all — it is culture, and it is allowed to be.
So we sort. Not with a verdict, but with a method. Every rule below has been read against sun, air, water and structure, and dropped into one of three buckets. This is the same honest frame we teach in our Vastu Meets Building Science course; here is the short version, applied to the rules people actually argue about.
Sound climate logic
Strip away the ritual language and a surprising amount of Vastu is simply good tropical building science, written down centuries before anyone gave it that name. These rules earn their place on performance alone.
Keep the north-east open, low and lightly built.
In the northern hemisphere the fierce sun swings through the south and west; the north-east takes only soft morning light and cool sky-glow. Opening that corner — windows, the lowest levels, the water — draws kind light and breeze in while the hot quadrants stay shaded. It is exactly what a passive-design consultant will charge you to rediscover.
Why the north-east stays cool — the sun path over IndiaPut the heavy mass and the master bedroom in the south-west.
The south-west wall takes the longest, fiercest afternoon sun. Loading it with thick mass — masonry, the least-used rooms — lets the wall soak that heat slowly and release it long after sundown, instead of cooking the room at four in the afternoon. Thermal mass on the hot face is textbook.
The south-west mass rule, decodedLeave the centre — the Brahmasthan — open.
An open core is a courtyard by another name. It lights the deep middle of a plan, lets a stack of warm air rise and escape, and drains the monsoon into the ground. Kerala's nalukettu — the logic behind this very issue's cover — is a Brahmasthan you can stand in.
The centre-open plan as proven passive designPair your openings — an inlet and an outlet on opposite walls.
This is cross-ventilation, full stop. Read charitably, Vastu's directional window rules are a memory aid for getting air to move through a room rather than stall in it — the cheapest cooling India has.
Test it: the Cross-Ventilation Analyzer (NBC 2016)Slope the site and the water to the north-east.
Drainage wants a low point, and the shaded, least-built corner is the right place for it — keeping damp away from your structural mass and the foundations on the hot side dry. Sensible hydraulics dressed as ritual.
Water in the north-east — the drainage logicBig light from the north, gentle sun from the east; ration the south and west.
North light is even and almost heatless; east sun is the soft early kind. Sizing your glass generously on those faces and sparingly on the hot ones is precisely how you would day-light a building today.
Vastu for home windows — direction, size, placement
Plausible — but contingent
These rules were genuinely sound once, under conditions most of us no longer build in: an open wood fire, a fixed plot, no mechanical anything, one particular latitude. The reasoning is real but conditional. Don't obey it blindly, and don't dismiss it — verify whether it still applies to you.
Cook in the south-east 'fire' corner.
Morning sun drying and sanitising a smoky, chimney-less wood fire was genuinely useful — in 1950. Give a kitchen an induction hob, an exhaust hood and a refrigerator and the original reason quietly evaporates. Site the kitchen for workflow and ventilation; the corner is now optional, not obligatory.
The south-east kitchen — when the rule outlived its reasonSleep with your head to the south.
The justification is a magnetic-alignment story the sleeping body does not actually read. Some people do rest better facing a certain way — but that is habit and room layout, not geophysics. File it under personal comfort, not law.
Vastu for the bedroom — what to keep, what to dropBuild only on regular, un-cut plots; avoid the corner plot and the T-junction.
A square or rectangle is easier and cheaper to build well, and a quiet plot is calmer than a busy junction — both true, both contingent on your actual site, budget and design skill, rather than on the shape carrying fortune.
Vastu for plot selection — shape, road, slopeToilets to the north-west (or is it the south-west?).
Keeping drains and damp away from living mass is sensible — but modern plumbing lets a bathroom sit almost anywhere, and the traditions themselves disagree on which corner. When the rule-books contradict each other, you have left physics and entered preference.
Toilets, drains and the SW/NW debateThe swimming pool belongs in the north or north-east.
Water on the shaded side evaporates a little less and a north pool catches kinder sun — small, real effects. Structure, setbacks, sun on the deck and a clear line of sight to the children matter a great deal more.
Vastu for swimming pools vs. the engineeringA north- or east-facing house is luckier.
Entry light and street aspect genuinely shape daily life — but the 'best facing' flips with your latitude and your plot. A south- or west-facing house is entirely liveable with shading and well-placed openings. Treat facing as a design problem to solve, not a verdict on the address.
North-facing (and every other facing), reconciled
Cultural convention
This last set has no airflow, light, drainage or structural mechanism behind it — and we say so plainly. That does not make it worthless; it makes it culture. Keep whatever brings you meaning. Just don't expect it to move a thermometer, an electricity bill or a resale price.
Doors must not face certain directions, or align across a room (dwar vedha).
There is no physical penalty for two aligned doors or a particular facing — no draught, no damp, no structural strain. It is a belief about the flow of fortune. Respect it as one; just don't mistake it for engineering.
Directional doors and 'defects' — the things with no physicsNumerology of steps, gemstones, pyramids, salt and mirror 'remedies'.
These are symbolic acts. If an odd number of stairs or a copper pyramid gives you peace, that peace is perfectly real — but its source is meaning, not measurement. Buy the crystal for comfort, not for cooling.
Astrology, numerology and remediesSpecific colours for specific directions.
Colour really does shape mood and the feel of light — but the rigid direction-by-colour table is convention, not optics. Choose colours for daylight, room use and what you love; borrow the Vastu palette if it happens to please you.
Vastu colours for the home — use them by choiceA particular idol, in a particular spot, facing a particular way.
Ritual placement, wholly legitimate as devotion — and entirely outside building performance. Put the pooja where the household will actually use it: quiet, clean and lightly lit. The direction is yours to keep for faith, not for physics.
Pooja room design — function first'Inauspicious' corners, rooms and dates.
Avoid-this-corner rules and auspicious-timing customs are cultural calendar, not climate. Honour them for continuity and family harmony if you wish — that is a genuinely good reason, honestly named.
Why thoughtful people believe both at once
Notice what we did not do. We did not bow to every rule, and we did not sneer at the whole tradition. Both are the easy move — and both, in their own way, are dishonest. Blind obedience can't tell you which rule is actually keeping your house cool. Blanket contempt throws away four millennia of hard-won climate sense along with the astrology.
Vastu is neither a sacred law to obey nor a superstition to mock. It is an old constraint to translate — part climate science that still works, part advice that expired when the wood fire did, part culture that was never about the physical world at all. The skill is simply knowing which rule is doing which job.
Held this way, the fight dissolves. The engineer keeps the sun-path wisdom. The believer keeps the ritual. And the homeowner gets the thing both camps forget to offer — a house that is comfortable and meaningful at once, designed with a clear head about why each decision was made.
That is the third position. We'll take it up on a new contested subject every issue — the topics where the honest answer is neither yes nor no, but 'it depends, and here is exactly how.'