France proves the feasibility engine.
Deterministic, auditable feasibility from published planning rules — validated by architects, traceable to source.
PLU & zoning interpretation
The engine reads the published PLU: emprise au sol, gabarit, height limits, setbacks and use constraints — interpreted as rules, cited as sources.
Buildable capacity
Massing envelopes and buildable floor area computed deterministically from the zoning parameters — the same inputs always produce the same answer.
Rough construction cost
Cost bands derived from transparent baselines, labelled indicative until validated on the file.
Planning-risk flags
Heritage overlays, risk plans and procedural constraints flagged early — before capital is committed, not at the permit desk.
Architect-supervised validation
A licensed architect reviews and signs the feasibility gate. Rule-based math, not an LLM guess — then a professional’s signature on top.
Auditable outputs
Every number is traceable: the rule it came from, the document that published it, the reviewer who validated it.