The method
How we read a building.
Vāstav reads a space the way an environmental engineer would: where the morning light lands, which wall holds the afternoon heat, where the breeze can enter, how each room performs. Every reading is shown with its physics and its evidence. Where it helps, classical spatial principles are read as the climate logic they encode, one optional layer among many.
Why this exists
People judge buildings on looks. We measure how they perform.
Two habits pulled Indian homes away from their climate. First, the fear industry: the kitchen direction sold as a warning, the toilet turned into an omen, the bedroom placement dressed up as destiny. Second, the imported aspiration: glass façades from Frankfurt, Italian marble underfoot, apartments designed as if they stood in Berlin, then run on ₹25,000 a month of air-conditioning to fight the climate they ignore. Bad building wrapped in luxury vocabulary.
And this is not a normal moment. Indian cities crowd the world’s hottest-city lists. Delhi spends a third of every year with air that keeps windows shut. Mumbai floods; Bengaluru rations water. In the same residential tower, the ground floor and the top floor live in measurably different climates, and nobody tells the buyer. The spatial decisions being made right now decide whether the next fifty years here are livable.
Other cultures had to invent climate consciousness from scratch. India has a 1,500-year-old vocabulary for it. It only needs reclaiming from the fear industry and reconnecting to the building science it always was. That is the gap Vāstav is built for: a credible, culturally grounded climate-intelligence platform for residential architecture. A Pada reading is not a Vastu report with climate bolted on; it is a climate report that speaks the language you came in with, and by the last page you have learned passive cooling, cross-ventilation, thermal mass and monsoon drainage through it.
The instrument
A deterministic engine reads your plan. Not vibes.
Your plan, held to the directions
We extract your real floor plan (walls, rooms, entrance) and hold it to true north. Every reading that follows is about your geometry, not a generic diagram.
The 81-pada mandala
The Vastu Purusha Mandala is laid over the plan: nine quarters around the open centre, each with its governing devata, read against where your rooms actually sit.
A rule engine produces every score
Placements, entrance padas, plot shape, doshas: each is a written rule with a fixed score impact, applied deterministically. AI writes the prose of your report; it is never allowed to move a score or invent an association.
The sun and your climate zone
Your location resolves to its NBC 2016 climate zone. Each face of the home is read against its real solar load (the kind morning light of the east, the afternoon heat the south-west must absorb) and the advice changes with the climate you actually live in.
The texts, cited in place
Readings carry their classical sources (Brihat Samhita, Mayamatam, Manasara and others) with the verse shown where the claim is made. Tradition is presented as tradition; building physics as fact; each labeled as which.
See it work before you upload anything: walk through a sample reading →
The twelve dimensions
Everything a reading measures.
- Orientation · how the building meets the sun and the prevailing wind
- Daylight · useful natural light, room by room, hour by hour
- Solar heat gain · the load each face takes across the day
- Cross ventilation · whether air can actually move through
- Thermal comfort · dry-bulb and wet-bulb, the body's real comfort
- Energy efficiency · where the cooling, heating and lighting bill goes
- Spatial efficiency · circulation, usable area, wasted space
- Functional planning · how the rooms support how you live
- Privacy & noise · sightlines, sound paths, the quiet rooms
- Climate resilience · heat, water and air, scored for the decades ahead
- Future adaptability · how gracefully the space can change with you
- Traditional principles · Vastu, read as climate and geometry, optional
How the Score is governed
A score is only worth what its rules are worth.
These bind us whether you are a homeowner paying ₹999 or a builder certifying a tower. They are published so you can hold us to them.
- The method is open. How the Vāstav Score is computed is on this page and in our published rules. A method nobody can inspect is a stamp, not a standard.
- Nobody can buy a grade. The fee covers the assessment and the right to display the result. It is identical whether the reading comes back 90 or 30, and nobody, human or AI, moves a number to sell an upgrade.
- No score is suppressed. If a paying client scores badly, the score stands. We will not withdraw a reading because the result was inconvenient for whoever commissioned it.
- The assessor is never the consultant. We do not take design-improvement fees on a building we are certifying in the same cycle. Grading our own corrections would make the grade meaningless.
- Every score has receipts. The sun-path model, the assumptions, and the inputs are archived with each assessment. If a claim comes from a text, we show the text; if it comes from physics, we show the physics; if it stands on neither, it is not in your report.
- No fear, and no trinkets. We never predict illness, loss, or misfortune, and every drawback we surface pairs with a real, usually low-cost action (placement, use, light, ventilation) rather than an object to buy.
Third-party certification is not open yet. These rules are written first, on purpose, so the Standard cannot be quietly bent once money is on the other side of it.
Read your home the way it was meant to be read.
Built by architects. Open to everyone.
- Twoarchitects, trained at IAAC Barcelona
- Twelvedimensions read in every report
- Evidenceevery reading shown with its data and assumptions