Automatic twice-yearly tracking of real property sales (DVF) in your area
Each time France's open property-sales dataset (DVF) is updated, the agent downloads sales for your towns, computes price per m² and trends, and emails you a commented summary.
- Difficulty
- Advanced
- Setup time
- 3 h
- Estimated cost
- €0–5 per half-year
- Category
- Real estate
⏱ Trigger
Every 1 April and 1 October (cron, matching DVF releases)
✋ Human approval
Read-only: the agent acts on nothing; you interpret the summary.
→ Output
Twice-yearly email + data series tab in Sheets
Autonomy level 3 — Autonomous: Runs end to end on its own; only low-risk actions (read, notify, archive).
01Connected tools
- n8n – Schedule Trigger ↗
- n8n – HTTP Request ↗
- DVF (French property-sales data) – data.gouv.fr ↗
- n8n – Google Sheets ↗
- n8n – OpenAI ↗
02What the agent does on its own
Downloads the geolocated DVF file for your towns from data.gouv.fr (French open-data portal).
Filters by property type and cadastral section.
Computes median price per m² and number of sales, compared with the previous half-year.
Has a cautious summary written and emails it to you.
03Agent instructions
> Here are aggregated DVF statistics: {STATS}. Write at most 8 lines describing the trend without extrapolating or valuing any specific property. Flag it if the number of sales is too small to draw conclusions.04Limits and legal points
DVF lags by several months and excludes some areas (Alsace-Moselle, Mayotte). This is not a property valuation.
05Source
https://www.data.gouv.fr/fr/datasets/demandes-de-valeurs-foncieres/