How to look up a building permit in Montreal

Step by step

1. Start with the civic address exactly as the city writes it, street number, street name, unit. Municipal feeds match on the address string, so "123 Main St" and "123 Main Street" can return different rows.
2. Open Montreal's own permit data at donnees.montreal.ca and find the dataset "Permis de construction". This is the same source this page reads.
3. Filter by permit type. In Montreal the common categories are Permis neige - 1 stationnement - 1 an, Réfection de la toiture par la mise en place d'une membrane blanche. Aucuns travaux de structure., Réfection de la toiture par la mise en place de l'asphalte et gravier blanc. Aucuns travaux de structure..
4. Check the status and the issue date, not just the filing. A filed permit is not an issued permit, and an issued permit is not a finalized one. A permit still open on the record is the one that stalls a sale.
5. If nothing comes back, the work may predate the city's published range, or it may have been done without a permit. Both look identical in an open-data search, which is why a written report matters at a closing.

What this dataset shows for Montreal

Questions people ask

Where are Montreal building permits published?

Montreal publishes its permit records on its own open-data endpoint at donnees.montreal.ca, in the dataset "Permis de construction". Van Permit Audit reads that feed and holds 560,812 Montreal records, current to 2026-09-21.

How many permits does Montreal issue?

Montreal filed 17,587 permits in the 12 months to 2026-09-21, and 964 in the most recent 30 day window. The most common category was Permis neige - 1 stationnement - 1 an, 166 permits over the year.

How current is Montreal permit data?

The latest Montreal permit filed date in this dataset is 2026-09-21, and the dataset was refreshed on 2026-09-30. Municipal feeds publish on their own cycle, so a permit filed in the last few days may not appear in either the city's feed or here yet.

Related municipalities

• Laval, QC 302 permits in its latest 30 day window
• Quebec City, QC 1,252 permits in its latest 30 day window
• Toronto, ON 112 permits in its latest 30 day window
• Calgary, AB 430 permits in its latest 30 day window
• Edmonton, AB 1,313 permits in its latest 30 day window

Montreal permit activity and numbers | All permit data