Lyon 7e · Guillotière
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Top driver: DVF momentum + 31 SITADEL permits filed in T-12
+14.2 pp vs commune
Plotix distils eighteen French open datasets into one calibrated 0–100 score per ~500 m zone — with the drivers, the analogs and the baseline to audit every number.
Invite-only until launch · Google sign-in · No card

Built on 18 French open datasets
Every zone below was scored, exported and timestamped before its observation window opened. We freeze the model, then we let the market answer.
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Top driver: DVF momentum + 31 SITADEL permits filed in T-12
+14.2 pp vs commune
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Top driver: Transit upgrade L3 + 21 % income density vs commune
+11.6 pp vs commune
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Top driver: Cadastre rotation + low Géorisques composite
+16.5 pp vs commune
DVF, SITADEL, Filosofi, INSEE, BAN, SIRENE, GTFS, Géorisques, ZAN, PLU — every refresh tracked, every record timestamped at ingest.
Bronze → silver → gold lakehouse
LightGBM ranker trained walk-forward across France 2014–2024. Isotonic calibration so the 0–100 number behaves like a probability, not a vibe.
Walk-forward CV · isotonic
Every prediction ships with its SHAP drivers and three historical analog zones whose feature vector matched yours. Read the model against record, not against trust.
SHAP · three analogs
Pick the right block before competitors do
Defend the asking price with a model, not a pitch
Allocate residential exposure across French metros
Stress-test residential exposure with point-in-time data
We pin a model number next to its baseline, every time. A score is only useful if you can read it against the naive guess and know why it differs.
Twelve-month price excess return vs the commune mean, on ~500 m H3 hexes. The ranker outputs a calibrated 0–100 score, not a forecast price.
Hex · r8 · 12-mo horizon
Walk-forward temporal CV plus spatial block CV — never random k-fold on spatial-temporal data. Every model number ships next to a naive department-mean baseline.
Walk-forward · spatial block
Isotonic regression on a held-out window so a 70 means a 70. SHAP per prediction, three historical analog zones whose feature vector matched yours.
Isotonic · SHAP · analogs
Every plan ships full access for fifteen days after launch. No card, no auto-renew — decide on day sixteen whether the model paid for itself.
Solo · one metro
Solo · all metros
5 seats · collaboration
API · white-label
Access is invite-only until launch. Sign in with Google if your account has been enabled — or request access and we will open the door before 1 September 2026.