Real estate profitability simulator
Détecteur Studio
Know what a property could really earn — or what a sale could leave you.
Détecteur Studio uses French property market reference data to estimate property values, rental profitability and net cash flow after costs and taxes. Compare investment, rental and sale scenarios, including financing, renovation costs and French taxation. Standalone software available in French, covering France only. Coming soon under an annual licence.
On the roadmap
What Détecteur Studio will do.
- Project simulator (purchase, rent, expenses, taxation)
- French taxation as of 1 January 2026 (2025 Finance Act, Le Meur law): short-term rentals, SCI under corporate tax, property deficit
- Amortization (LMNP, SCI, IS)
- Reference data per municipality, in France: sales (DVF), rents, vacant housing
- Net monthly cash-flow computation
- Tax scenario comparison
- PDF report export for banker or accountant
- Your simulations are stored in your browser and calculated on your computer; the property's address and location are sent to French public services (addresses, energy performance, land registry, risks).
Want to be notified the day Détecteur Studio launches? Write to us, we'll let you know. No spam, no sales follow-up.
Notify me at launchIn the meantime
Two Cahiers Autonomes are already available.
Invoice Studio (quotes, invoices, payments, profitability) is available today: 7-day free trial, then EUR 99 per year (VAT not applicable, art. 293 B of the French General Tax Code). Prélèvement Studio, the sanitary logbook for public swimming pools, is also available, in French for France.
View Invoice Studio