The Régie du bâtiment du Québec (RBQ) has adopted new measures in 2026 aimed at strengthening the quality of plumbing work in Quebec residences and commercial buildings.
What are the main changes?
The RBQ has revised the Quebec Construction Code — Chapter III, Plumbing to include new requirements for materials used in drinking water pipes. Lead pipes are now formally prohibited in any renovation or new installation, and owners of buildings built before 1970 are encouraged to have their plumbing system inspected.
The new rules also require mandatory inspection of plumbing work over $15,000 by an RBQ-accredited inspector.
What changes for homeowners
If you hire a plumber for major work, always verify that the contractor holds a valid RBQ license in category 15.1 (plumbing contractors). This verification is free on the RBQ website.
Since January 2026, contractors are also required to provide a compliance report after any main pipe replacement work.
How to verify your plumber
- Visit the RBQ website: rbq.gouv.qc.ca
- Enter the contractor's name or license number
- Verify that the license is valid and unrestricted
- Confirm that the category matches the requested work (15.1 for residential plumbing)
What this means for owners of older homes
Homes built before 1970 may contain lead pipes that pose a health risk. The new regulation encourages — but does not yet require — owners to replace these pipes during renovations. Some municipalities, like Montreal, offer grant programs for this type of replacement.