# Zillow Zestimate History Chart

<p>Get the value history of one home as a list of dates and values. Choose the Zestimate (home value), the Rent Zestimate (rental rate) or the property tax paid, over 1, 5 or 10 years.</p><h2>Point counts</h2><p>Ten years of home values hold about 120 monthly points, five years about 60 and one year about 12. Tax paid is a yearly series. A series can be empty or shorter for a home without that history.</p><p>Costs 1 credit per request.</p>

- **Documentation:** [https://scrappa.co/docs/zillow-api/zillow_value_chart](https://scrappa.co/docs/zillow-api/zillow_value_chart)
- **API group:** Zillow API
- **Endpoint:** `GET https://scrappa.co/api/zillow/value-chart`

## Authentication

Send your Scrappa API key in the `X-API-KEY` request header. Paid endpoints also support accountless x402 payments when called without an API key.

## Parameters

| Parameter | Type | Required | Description |
| --- | --- | --- | --- |
| `zpid` | integer | Yes | Zillow property id. |
| `metric` | string | No | home_value (default), rental_rate or tax_paid. |
| `time_period` | string | No | 1y, 5y or 10y (default). |

## Example request

```bash
#!/bin/bash

curl -X GET \
    -H "x-api-key: YOUR_API_KEY_HERE" \
    "https://scrappa.co/api/zillow/value-chart?zpid=58665326&metric=home_value&time_period=1y"
```

## Example response

```json
{
    "data": {
        "zpid": 58665326,
        "metric": "home_value",
        "time_period": "1y",
        "point_count": 12,
        "series": [
            {
                "name": "This home",
                "points": [
                    {
                        "date": "2025-11-30",
                        "value": 962700
                    }
                ]
            }
        ]
    }
}
```

## Errors

| Status | Error | Description |
| --- | --- | --- |
| 400 | The request validation failed | A query parameter is missing, malformed, or outside its documented range. This is the only Zillow response that carries no error code: the body has a message and a field list and nothing else, so match it on the 400 status. |
| 422 | No research dataset matches that family and geography | The requested research file does not exist for the combination given. |
| 422 | More than one research dataset matches | The family, geography and variant given do not identify a single research file. |
| 422 | No accuracy figures are published for that region | The named state or metropolitan area publishes no estimate-accuracy data. |
| 422 | The upstream rejected the request | Zillow answered with a deterministic 4xx. |
| 422 | The building returned does not match the requested address | The decoded building token resolved to a building at a different address than the slug names. |
| 503 | The listing source answered with a block or rate-limit page | The request reached the source, but what came back was a challenge or rate-limit page rather than the data. |
| 503 | The listing source returned a server error | The request was served and answered with a 5xx. |
| 503 | The listing source did not answer in time | The request was sent and no answer came back before the deadline. |
| 503 | The request could not be sent | No approved exit could be reached, so the request never reached the listing source. |
| 503 | No approved exit is available | There was no usable approved exit to send the request through. |
| 503 | The upstream returned a document this integration cannot read | The publisher changed the shape of a response or served a document that is not the expected file. |

## More Scrappa resources

- [API documentation](https://scrappa.co/docs)
- [Full LLM-readable API reference](https://scrappa.co/llms-full.txt)
- [OpenAPI specification](https://scrappa.co/docs/api.json)
- [Pricing](https://scrappa.co/pricing)