About

Baptiste Rouget — Founder of RentValo

As a property investor, I created RentValo in 2026 to solve a concrete problem: existing simulators gave optimistic yields disconnected from real tax rules and verifiable market data.

Expertise

Property investor

Unfurnished, LMNP and SCI in personal portfolio.

RentValo founder

Launched in 2026 — AI simulator dedicated to French rental property.

Tax specialist

All applicable tax regimes modelled, updated with each Finance Act.

RentValo Methodology

RentValo is built on a simple principle: every figure shown must be traceable to an official source or a verifiable formula. Here are the four pillars.

Official DVF notarial data

Market prices shown in RentValo come exclusively from Demandes de Valeurs Foncières (DVF) published by the DGFiP on data.gouv.fr — real property transactions recorded by notaries, not agency estimates.

Server-side TypeScript calculations

All calculations — gross, net and net-net yield, cash flow, IRR, LMNP depreciation, SCI corporate tax — are performed in TypeScript in /lib/calculs/. No calculation is delegated to AI. Lylia receives pre-calculated results and interprets them.

Up-to-date tax regimes

All applicable tax sub-regimes (micro-foncier, LMNP micro-BIC, LMNP actual costs, LMP, SCI IR/IS…) are verified on impots.gouv.fr, bofip.impots.gouv.fr and service-public.fr. Last update: Finance Act 2026 (private landlord status / Jeanbrun Act for unfurnished rental) and LMNP depreciation reintegration (LFI 2025).

Grounded in market reality

Each simulation integrates median rents from the ANIL/CLAMEUR Rent Observatory, mortgage rates from Crédit Logement CSA and ADEME DPE data to flag energy-inefficient homes before the ban.

Articles & Resources

First articles will be published soon.

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All applicable tax regimes compared, monthly cash flow, IRR on deposit and 20-year wealth projection. Free signup, no credit card.

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Legal noticeT&CsPrivacy policyPricing© 2026 RentValo

Important notice — RentValo is a property analysis and decision-support tool. The simulations, projections and analyses produced are provided for strictly informational purposes only and do not constitute investment advice within the meaning of Articles L. 321-1 and L. 541-1 of the French Monetary and Financial Code. RentValo is not an investment services provider authorised by the Autorité des marchés financiers (AMF) and does not carry out the activity of Financial Investment Adviser (CIF).

Risks — All property investment involves risks, including partial or total loss of invested capital, void periods, unexpected charges and adverse market movements. Past performance and projected figures displayed do not constitute a guarantee of future results. Market data used (price per m², reference rents, rates, taxation) may change. RentValo cannot be held liable for investment decisions made on the basis of these analyses.

Before any investment decision, we recommend consulting a qualified professional: notary, chartered accountant, AMF-registered wealth management adviser (CGP) or specialist lawyer.