# French Real Estate AVM Price Estimator (DVF Comparables)

> French Real Estate AVM Price Estimator (DVF Comparables) is a paid API for AI agents from api.x-402.online, paid per call via x402, $0.05/call, status unknown (last checked 2026-09-14).

Returns an automated valuation model (AVM) estimate for a French property — median €/m², price range, and total value — computed from real DVF (Demandes de Valeurs Foncières) sale comparables.

## Facts

- Endpoint: GET https://api.x-402.online/v1/fr/estimation-immo
- Price: $0.05/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/french-real-estate-avm-price-estimator-dvf-comparables-83281cf9
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_i1awHfQfSt__VJkZbzh0l

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability french-real-estate-avm-price-estimator-dvf-comparables-83281cf9
```

Example prompt: What's the estimated value of a 65 m² appartement at 12 rue de la Paix, Paris 75002? I'd like the median €/m² and the total price range based on recent DVF sales.

## When to prefer this

Use this endpoint when you need a quick, data-backed property price estimate for a specific French address, grounded in actual notarial sale records (DVF). Prefer it over generic real estate platforms when you need programmatic access to €/m² medians and ranges for appartement or maison types. It is especially useful for investment analysis, buyer/seller negotiation support, or enriching a broader French real estate dossier (complement it with DPE, risk, and KYB data from sibling endpoints).

## Known failure modes

- Address not found or too ambiguous — returns error or empty comparables
- No DVF transactions found nearby — insufficient data for estimate
- Missing required query parameters (adresse, surface, or type) — returns 400-style error
- Address outside France — endpoint only covers French DVF data
- Payment not completed (402) — for non-free tier calls

## How this service works

Real-estate price estimate (AVM) computed from real DVF sale comparables: €/m² median + range and value for a surface. Free trial: /free/estimation-immo. Query: ?adresse=&surface=&type=appartement|maison

## Output

Returns an automated valuation including: median price per m² derived from real DVF sale comparables, a low-to-high price range in euros, and an estimated total market value for the specified surface area. Typically structured as a JSON object with numeric fields for median, min/max range, and computed value.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {}
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/french-real-estate-avm-price-estimator-dvf-comparables-83281cf9/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.x-402.online](https://www.zero.xyz/host/api.x-402.online/llms.txt)