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.

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

Output

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

{
  "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, published by the Ministère des Affaires municipales et de l'Habitation (MAMH) under CC-BY 4.0. 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.