{
  "version": "3.0-standardized-saleable-loading",
  "calculationUpdated": "2026-10-16",
  "researchSnapshotAsOf": "2026-10-15",
  "defaultLoadingPercent": 40.0,
  "formulas": {
    "developerPlanningSqft": "reraCarpetSqft + exclusiveTerraceSqft",
    "estimatedSaleableSqft": "developerPlanningSqft * (1 + selectedLoadingPercent / 100)",
    "estimatedSaleableSqft40": "developerPlanningSqft * 1.40",
    "actualDeveloperLoadingPercent": "(documentedSaleableSqft / same-unit documented developerPlanningSqft - 1) * 100; only when the same-unit documentation is reconciled",
    "registeredRate": "registeredSellingPriceINR / selected positive eligible denominator"
  },
  "definitions": {
    "reraCarpetSqft": "Source-reported base carpet; independent statutory certification remains unavailable.",
    "exclusiveTerraceSqft": "Separately reported exclusive terrace; combined balcony/terrace figures are not split. Legal exclusivity remains source-reported.",
    "exclusiveBalconySqft": "Separately reported exclusive balcony; not included in developer planning carpet or standardized saleable model.",
    "developerPlanningSqft": "RERA carpet + separately known exclusive terrace. Null if either required component is unavailable or ambiguous.",
    "saleableSqft": "Actual source-documented saleable/chargeable area. Never overwritten by standardized modeling.",
    "estimatedSaleableSqft40": "Modeled saleable at assumed 40% loading over developer planning carpet. It is not a competitor developer statement.",
    "actualDeveloperLoadingPercent": "Unknown unless documentary actual saleable and same-unit developer planning base are reconciled.",
    "unknownPolicy": "Unknown is null, not zero. Retain a source explicit zero. Missing balcony does not block the saleable model but must remain flagged; missing terrace does block it.",
    "actualRate": "Registered price / source-measured eligible area.",
    "modeledRate": "Registered price / estimated saleable area from selected loading; visually distinguished from source-area rates.",
    "advertisedPrice": "Current advertisement or quote only. Do not attach a project headline to an apartment or calculate a unit rate without a reconciled matching area and fees.",
    "projectArea": "25 lakh (2,500,000) sq. ft. and launch target 10 lakh (1,000,000) sq. ft. are both user-confirmed saleable. The commercial model now uses planning carpet as the loading base."
  },
  "browserPayloadContract": {
    "deriveDynamicallyFrom": [
      "reraCarpetSqft",
      "exclusiveTerraceSqft",
      "exclusiveBalconySqft",
      "developerPlanningSqft",
      "saleableSqft",
      "considerationINR",
      "rateEligibility"
    ],
    "doNotExpandEveryTransaction": "All modeled fields can be computed from the unchanged source component fields. Keep the browser payload below the hosting per-asset size limit.",
    "standardModelEligibility": "rateEligibility.developerPlanningSqft AND positive computed planning carpet and registered price",
    "verifiedSaleableEligibility": "rateEligibility.saleableSqft AND positive source-documented saleable area and registered price",
    "scenarioLoading": "A management assumption. It changes standardized saleable areas/rates only; actual areas and source rates remain unchanged.",
    "currentView": "Current CRE cohort uses October 2025–September 2026; Mundhwa has a distinct older source period.",
    "phaseGate": "5 km transaction cohort requires radiusLocationEligible and distanceKm <= 5, not just a parent project pin."
  },
  "actualLoadingConventionsVerified": [],
  "conventionStatus": "No actual developer saleable/loading convention is documented and reconciled in the current dataset. Marketing total-carpet, EBVT, balcony, utility, sundeck and source-inclusive areas are not saleable measurements.",
  "warnings": [
    "Standardized 40% loading is a planning assumption, not evidence that any competitor uses it.",
    "Area-based cohort coverage differs. Compare matched samples when interpreting basis differences.",
    "All-source observations, historic unit specifications, registered deals, current advertisements and live inventory are distinct evidence types.",
    "Source evidence remains dated 15 October 2026; this calculation update does not claim new market research."
  ],
  "coverage": {
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          "denominatorType": "Source measurement; eligibility and component evidence retained"
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    "auditSourceDate": "2026-10-15",
    "calculationUpdated": "2026-10-16"
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}