27/09/2026, 10:53:34
Sample brief for demonstration. Sign in to generate and save your own analyses.
AI qualitative take
Four layers: calculated yields from your inputs, sourced official market data (France), explicit projection assumptions, AI qualitative analysis.
Asking €215,000 (~€3,909/m²). Input-based gross yield 5.5%; monthly cashflow +€395 (unlevered).
Gross yield
5.5%
Price-to-rent
18.3x
Net yield
5.0%
Monthly cashflow
€890
Payback
20.1 yrs
Demo sample figures for the UI. Not a live DVF or INSEE extract.
DVF median sale price
€4,249/m²
Transactions (n)
19
DVF median change (available years)
n/a
Gap vs DVF median
-8%
Price at DVF median (calc.)
€233,696
INSEE vacancy
11.2% (INSEE)
Carte des loyers reference
17.80 €/m²/mo · gap 0%
Derived gross yield (DVF sale / ANIL asking rent)
5.0%
Derived price-to-rent (DVF sale / ANIL asking rent)
19.9x
Source: Demo sample. Licence Ouverte / Etalab attribution where applicable.
The height gap is the brand: how far your asking price sits from the DVF median for similar sales.
Priced below the sourced median. The gap is a buffer, not a buy order.
You pay
€215,000
At DVF median
€233,696
Gap
-8%
Sample confidence
Medium (n 8 to 19) · n=19
Offer language
Four lines you can send the agent. Sourced DVF gap only. Not a commitment.
Interest in Marseille: Vieux-Port at €215,000
Hello, I reviewed Marseille: Vieux-Port listed at €215,000.
The ask is at or below the sourced median (€233,696, n=19). I would keep €215,000 subject to visit.
Please confirm documents and a viewing slot.
I can send the one-page decision pack. This is not a commitment.
Optimistic ignores vacancy. Base uses INSEE vacancy when available. Pessimistic cuts rent 10%, lifts charges 20%, adds vacancy, and +1 pp on the rate if financed.
INSEE vacancy mapped to months: 1.3 mo/yr
| Optimistic | Base | Pessimistic | |
|---|---|---|---|
| Net yield | 5.0% | 5.0% | 4.3% |
| Net-net | 5.0% | 4.4% | 2.9% |
| Monthly cashflow (levered) | €890 | €890 | €774 |
| After 30% illustrative tax (30%) | €623 | €546 | €370 |
| Vacancy used | 0.0 mo/yr | 1.3 mo/yr | 3.3 mo/yr |
The 30% line is a labeled haircut on unlevered net after vacancy. Not tax, IR, or LMNP advice.
Four named shocks, then all at once: rent −10%, rate +2 pp, +6 months vacancy, works +15% on price.
The combined shock still leaves non-negative levered cashflow.
The brief is a screen, not due diligence. Tick what you still need before an offer.
Documents to request
On the visit
Questions for the agent / notary
Calculated from your inputs (deterministic)
Qualitative AI assessment (not a market measurement)
Qualitative AI assessment (not a market measurement)
Qualitative AI assessment (not a market measurement)
Qualitative AI assessment (not a market measurement)