Coverage
French property evidence by region
These counts describe the source corpus used to build aggregates. Overlapping regional definitions mean their counts should not be added together.
How to use this evidence
Start with a question, not a single headline number. For the regions shown, compare the same property type and time period, note how many records support an aggregate, and treat a regional median as context rather than a valuation. A large source count improves coverage but does not remove differences between communes, condition, land, tenure or unusual sales.
Questions this page can answer
What market evidence is available?
The page identifies the aggregate DVF coverage for the regions shown, including the relevant years and number of source rows.
How should two areas be compared?
Use the same property type, period and calculation, with sample size visible. Do not compare unlike regional definitions as if they were one market.
What risk context is available?
GASPAR provides commune-level screening context where shown; it is not an address-level determination.
What must be checked before acting?
Verify the precise property through the notaire, Géorisques, planning records, diagnostics and an appropriate survey. This site deliberately leaves unknown facts unknown.
Evidence build: 2026-09-03 · DVF coverage 2021–2025.
Data last collected: . Data last rechecked: .