# Quebec Property Assessment Roll (`opendatatools/quebec-property-assessment-roll`) Actor

Returns one row per assessment unit for any Quebec municipality: assessed land, building and total values, plus address, use code, year built and floor area. Official MAMH open data under CC-BY 4.0.

- **URL**: https://apify.com/opendatatools/quebec-property-assessment-roll.md
- **Developed by:** [Nico Poland](https://apify.com/opendatatools) (community)
- **Categories:**
- **Stats:** 2 total users, 1 monthly users, 100.0% runs succeeded, 0 bookmarks
- **User rating**: No ratings yet

## Pricing

from $2.00 / 1,000 assessment unit returned.s

This Actor is paid per event. You are not charged for the Apify platform usage, but only a fixed price for specific events.

Learn more: https://docs.apify.com/actors/running/actors-in-store.md#pay-per-event

## What's an Apify Actor?

Actors are web data automations that power AI and operations. They run on the Apify platform to scrape websites, process data, connect APIs, and automate workflows.
In Batch mode, an Actor accepts a well-defined JSON input, performs an action which can take anything from a few seconds to a few hours,
and optionally produces a well-defined JSON output, datasets with results, or files in key-value store.
In Standby mode, an Actor provides a web server which can be used as a website, API, or an MCP server.
Actors are written with capital "A".

## How to integrate an Actor?

If asked about integration, you help developers integrate Actors into their projects.
You adapt to their stack and deliver integrations that are safe, well-documented, and production-ready.
The best way to integrate Actors is as follows.

- **AI agents and MCP clients** — the [Apify MCP server](https://docs.apify.com/integrations/mcp.md) at `https://mcp.apify.com` (remote, streamable HTTP, OAuth on first use).
- **Agentic workflows and local Actor development** — [Agent Skills](https://apify.com/.well-known/agent-skills/index.json) with the [Apify CLI](https://docs.apify.com/cli/docs.md): `npm install -g apify-cli`, then `apify login`.
- **JavaScript/TypeScript projects** — the official [JS/TS client](https://docs.apify.com/api/client/js/docs.md): `npm install apify-client`.
- **Python projects** — the official [Python client](https://docs.apify.com/api/client/python/docs.md): `pip install apify-client`.
- **Any other language** — the [REST API](https://docs.apify.com/api/v2.md).

For usage examples, see the [API](#api) section below.

For more details, see Apify documentation as [Markdown index](https://docs.apify.com/llms.txt) and [Markdown full-text](https://docs.apify.com/llms-full.txt).

# README

## Quebec Property Assessment Roll

Returns one row per assessment unit for any Quebec municipality: assessed
land, building and total values, plus address, use code, year built and
floor area. Official MAMH open data under CC-BY 4.0.

### What it does

Quebec publishes every municipality's property assessment roll (*rôle
d'évaluation foncière*) as open data: 1,134 XML files, one per
municipality, with field names like `RL0404A` and a 26-page guide
explaining them. This Actor turns one of those files into clean, typed,
documented rows.

Give it a municipality, by geographic code (`1042`) or by name
(`Grosse-Île`, or just `grosse ile`), and it returns every assessment
unit with its matricule, address, physical characteristics and the
assessed values that drive municipal tax bills, including the previous
roll's value so you can measure change directly.

**What it does not do.** It does not return owner names, owner addresses,
or cadastral lot numbers. MAMH removes those from the open files, and
re-identifying them is prohibited. This Actor excludes those sections of
the source outright rather than passing through whatever happens to
survive redaction. See *Attribution and privacy* below.

It is also not a live feed. Rolls are published annually.

### Input

| Field | Type | Required | Default | Description |
|---|---|---|---|---|
| `municipality` | string | yes | n/a | Geographic code (`1042`, `01042`) or name (`Grosse-Île`, `grosse ile`). Accents and punctuation are ignored. |
| `rollYear` | integer | no | `2026` | Year the roll came into effect. Published years start at 2022. |
| `maxResults` | integer | no | `1000` | Stop after this many units. Montréal has hundreds of thousands. |
| `useCodes` | array of strings | no | n/a | Keep only units whose use code starts with one of these. `"1"` = residential, `"5"`/`"6"` = commercial. |
| `failOnEmpty` | boolean | no | `false` | Operator health check; leave off. |

```json
{
  "municipality": "Grosse-Île",
  "rollYear": 2026,
  "maxResults": 1000,
  "useCodes": ["1"]
}
```

### Output

One row per assessment unit. This is a real row from a real run:

```json
{
  "municipality_code": "01042",
  "municipality_name": "Grosse-Île",
  "roll_year": 2026,
  "matricule": "0075-34-3748",
  "address": "50 PRINCIPAL",
  "street_name": "PRINCIPAL",
  "civic_number_from": "50",
  "use_code": "8549",
  "year_built": 1981,
  "year_built_is_estimated": false,
  "max_floors": 1,
  "land_area_sqm": 1307432.5,
  "frontage_m": 2236.55,
  "non_residential_units": 2,
  "land_value": 199700,
  "building_value": 11799100,
  "total_value": 11998800,
  "previous_total_value": 9485500,
  "market_conditions_date": "2024-07-01",
  "vacant_serviced_land": false,
  "fiscal_class_code": "10",
  "neighbourhood_unit": "8202",
  "file_number": "598627",
  "agricultural_zoning_code": "0",
  "street_type_code": "CH",
  "source": "Rôle d'évaluation foncière du Québec (MAMH)",
  "source_url": "https://www.donneesquebec.ca/recherche/dataset/roles-d-evaluation-fonciere-du-quebec",
  "license": "CC-BY-4.0",
  "license_url": "https://www.donneesquebec.ca/licence/#cc-by",
  "retrieved_at": "2026-09-06T07:23:40+00:00"
}
```

Key fields:

| Field | Type | Description |
|---|---|---|
| `matricule` | string | The unit's ID within its municipality, the number on a tax bill. Reassembled from four separate source elements. |
| `address` | string | Assembled from the roll's separate number, suffix, street and cardinal-point fields. |
| `use_code` | string | MEFQ predominant-use code. Hierarchical: `1xxx` residential, `5xxx`/`6xxx` commercial. |
| `total_value` | integer | Assessed value of the whole property, in CAD. |
| `previous_total_value` | integer | The same property on the previous roll, so change is directly measurable. |
| `land_value`, `building_value` | integer | The split, where the roll records it. |
| `year_built` | integer | Present only when the unit has exactly one main building. |
| `year_built_is_estimated` | boolean | `true` when the assessor recorded the year as an estimate rather than a known date. |
| `land_area_sqm`, `floor_area_sqm`, `frontage_m` | number | Metric, as published. |
| `dwellings`, `rental_rooms`, `non_residential_units` | integer | Unit counts within the property. |
| `has_multiple_addresses` | boolean | `true` for corner lots and similar. The primary address is returned; the property is **not** split into several rows, so you are never charged twice for one property. |

Fields the source does not provide for a given unit are **absent**, not
blank: "the assessor did not record this" and "this is empty" are
different facts.

Full field documentation is on the Output tab (44 fields, three views).

### Pricing

Pay per event. You are charged **$0.002 per assessment unit returned**,
plus Apify's standard $0.00005 Actor start event.

**Example:** a 1,000-unit municipality = 1,000 × $0.002 + $0.00005 =
**$2.00**.

You are never charged for:

- units removed by your `useCodes` filter. Filtering happens before
  delivery,
- anything beyond your `maxResults`,
- runs that fail, including a municipality name we cannot match.

Because a large city runs to hundreds of thousands of units, `maxResults`
defaults to 1,000 and `useCodes` exists precisely so you can pay for the
subset you actually want.

### Limits and refresh cadence

- **Annual, not live.** Rolls come into effect for a given year; the 2026
  files were published in April 2026. `market_conditions_date` tells you
  the date the valuations reflect.
- **Coverage:** 1,134 municipalities, roll years 2022 onwards.
- **Size:** municipal files range from 649 KB to about 795 MB. Large
  municipalities take longer; the Actor streams rather than loading a file
  into memory, so size affects runtime, not reliability.
- **Politeness:** at most 2 concurrent requests to MAMH, spaced out. The
  municipality index is cached for 24 hours.
- **One main building:** several fields (`year_built`, `floor_area_sqm`)
  are only published when a unit has exactly one main building. That is a
  property of the source, not a gap in this Actor.

### Attribution and privacy

Data from the [Rôle d'évaluation foncière du
Québec](https://www.donneesquebec.ca/recherche/dataset/roles-d-evaluation-fonciere-du-quebec),
published by the Ministère des Affaires municipales et de l'Habitation
(MAMH) under
[CC-BY 4.0](https://www.donneesquebec.ca/licence/#cc-by). Source and
licence are stamped on every row so attribution survives export.

MAMH removes owner names, owner addresses and cadastral data from the open
files, and prohibits re-identifying that information. This Actor:

- reads **no** owner section of the source, not even the fields that
  survive redaction;
- reads **no** cadastral block, including the undocumented lot numbers
  still present in the files;
- performs no matching against any other dataset.

If you need owner information, the roll is publicly consultable at the
municipality under the *Loi sur la fiscalité municipale*. This Actor is
not the route to it.

### Changelog

See the Changelog tab.

### Issues

Report problems on the Issues tab. Please include the run ID. Breakage is
normally fixed within one working day.

# Actor input Schema

## `municipality` (type: `string`):

Geographic code (for example 1042 or 01042) or name (for example Grosse-Île). Names are matched without accents or punctuation, so 'grosse ile' works too.

## `rollYear` (type: `integer`):

Year the roll came into effect. Published years are 2022 to 2026. Rolls are annual, not live.

## `maxResults` (type: `integer`):

Stop after this many assessment units. Montréal alone has hundreds of thousands, so this defaults low on purpose. You are never charged for more than you receive.

## `useCodes` (type: `array`):

Optional. Keep only units whose predominant-use code starts with one of these. The MEFQ code is hierarchical, so "1" selects all residential, "10" detached houses, "5" and "6" commercial. Filtered-out units are never charged for.

## `failOnEmpty` (type: `boolean`):

Leave this off for normal use. The daily monitor run turns it on so that 'succeeded but returned nothing' shows up as a failure instead of passing silently.

## Actor input object example

```json
{
  "municipality": "1042",
  "rollYear": 2026,
  "maxResults": 1000,
  "useCodes": [
    "1"
  ],
  "failOnEmpty": false
}
```

# Actor output Schema

## `results` (type: `string`):

Every row this run produced, in the default dataset.

# API

You can run this Actor programmatically using our API. Below are code examples in JavaScript, Python, and CLI, as well as the OpenAPI specification and MCP server setup.

## JavaScript example

```javascript
import { ApifyClient } from 'apify-client';

// Initialize the ApifyClient with your Apify API token
// Replace the '<YOUR_API_TOKEN>' with your token
const client = new ApifyClient({
    token: '<YOUR_API_TOKEN>',
});

// Prepare Actor input
const input = {
    "municipality": "Grosse-Île",
    "useCodes": []
};

// Run the Actor and wait for it to finish
const run = await client.actor("opendatatools/quebec-property-assessment-roll").call(input);

// Fetch and print Actor results from the run's dataset (if any)
console.log('Results from dataset');
console.log(`💾 Check your data here: https://console.apify.com/storage/datasets/${run.defaultDatasetId}`);
const { items } = await client.dataset(run.defaultDatasetId).listItems();
items.forEach((item) => {
    console.dir(item);
});

// 📚 Want to learn more 📖? Go to → https://docs.apify.com/api/client/js/docs

```

## Python example

```python
from apify_client import ApifyClient

# Initialize the ApifyClient with your Apify API token
# Replace '<YOUR_API_TOKEN>' with your token.
client = ApifyClient("<YOUR_API_TOKEN>")

# Prepare the Actor input
run_input = {
    "municipality": "Grosse-Île",
    "useCodes": [],
}

# Run the Actor and wait for it to finish
run = client.actor("opendatatools/quebec-property-assessment-roll").call(run_input=run_input)

# Fetch and print Actor results from the run's dataset (if there are any)
print(f"💾 Check your data here: https://console.apify.com/storage/datasets/{run.default_dataset_id}")
for item in client.dataset(run.default_dataset_id).iterate_items():
    print(item)

# 📚 Want to learn more 📖? Go to → https://docs.apify.com/api/client/python/docs/quick-start

```

## CLI example

```bash
echo '{
  "municipality": "Grosse-Île",
  "useCodes": []
}' |
apify call opendatatools/quebec-property-assessment-roll --silent --output-dataset

```

## MCP server setup

```json
{
    "mcpServers": {
        "apify": {
            "type": "http",
            "url": "https://mcp.apify.com/?tools=fetch-actor-details,opendatatools/quebec-property-assessment-roll"
        }
    }
}

```

The hosted server signs you in with OAuth on first connect, so no API token belongs in this config. Clients without OAuth support can send an `Authorization: Bearer <APIFY_API_TOKEN>` header instead, using a token from API & Integrations in Apify Console (https://console.apify.com/settings/integrations).

## OpenAPI specification

Download the OpenAPI definition: https://api.apify.com/v2/actors/p8KxwJI9Bc2ut9OWo/builds/ikyipctdcNufrBRX6/openapi.json