Archidep guide
Montreal renovation permit: what to prepare
Most common permit types in Montreal
In Montreal, renovation permits vary by type of work, building and borough. Some minor work requires no permit; other projects require complete plans signed by an architect.
- Construction or extension permit
- Renovation permit with facade modification
- Permit for change of use or rezoning
- Authorization for work in heritage zones
Documents to prepare for submission
A well-prepared file avoids correction requests that delay approval by weeks. The borough checks consistency between plans, photos and forms before accepting the file.
- Site plans with dimensions and setback measurements
- Architectural plans per borough requirements
- Current photos of the building and lot
- Up-to-date location certificate if available
- Completed application form with accurate information
What slows permit applications
The main cause of delay is not application volume but incomplete or inconsistent files. A plan that doesn't match location certificate dimensions, or photos that contradict plans, triggers correction requests and restarts the queue.
Common questions
How long does Montreal permit approval take?
Timing varies by borough, work type and file completeness. Generally expect four to twelve weeks after submitting a complete file.
Can an architect submit the permit on my behalf?
Yes. The architect can prepare the file and submit the application on the client's behalf in most boroughs. Permit fees remain the client's responsibility.
Does all renovation work require a permit in Montreal?
No. Some interior work with no impact on structure, facade or zoning doesn't require a permit. The relevant borough's regulations must be checked before concluding.