BienCheck score
How we score a property out of 100
The BienCheck score is the weighted sum of four pillars. Each one is computed from official public data — for the town, and where possible the property itself.
Market (30%)
Price per m² vs town, 5-year trend, sales volume. A healthy but expensive area can lose points if there's no negotiation room left.
Risks (25%)
Flood, clay shrink-swell, seismic, radon, industrial sites (Géorisques). A single high hazard knocks this pillar down hard.
Energy (20%)
Likely EPC band and local mix. An F/G label hurts badly under the 2025-2034 lettings rules.
Liquidity (25%)
Demand, typical time on market, area momentum. Measures how easily you can walk away if life changes.
How to read the score
80-100: solid property, few blind spots. 60-79: good case, a couple of things to dig into. 40-59: compromise, only sign with serious negotiation. Below 40: walk away, unless you've got a strong personal reason.
- 80-100 — Green: go ahead, normal negotiation
- 60-79 — Light yellow: dig in, ask for the full diagnostics
- 40-59 — Orange: knock down the price or move on
- 0-39 — Red: high risk, we'd advise against it
Confidence shown
Next to the score we display a confidence rating. It drops when the town has few recent DVF sales or few EPCs on file. A 75 with low confidence is worth less than a 70 with high confidence.
A real example
Apartment in Chateaurenard (13160): market 22/30 (price fair, market steady), risks 18/25 (high clay, the rest OK), energy 14/20 (likely EPC D), liquidity 19/25. Total: 73/100, medium confidence. Recommendation: negotiate 4% off to cover future clay-related works.
Why no national ranking?
A flat in Paris 7th and a house in Saint-Étienne don't compare. The score is calibrated locally: it tells you whether THIS property is good in ITS context, not whether it beats another one 500 km away.