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Replacing windows in Montreal: permits and grants in 2026
Which boroughs need a permit, what it costs and which grants are open now.
- $9.80permit fee per $1,000 of work
- $167.40minimum permit fee, residential building
- $300Rénoclimat aid per window, new terms
How we pick
Every rule and amount on this page was read on an official page of the City of Montreal, the Government of Quebec, Hydro-Québec, the Government of Canada or the Régie du bâtiment du Québec on November 13, 2026. Rules change. Confirm with your borough's permit counter before you sign a contract.
Do I need a permit to replace windows in Montreal?
In most boroughs, yes, even for windows of the same size. The city's page says a permit is needed to replace exterior doors and windows, with some borough exceptions.
Plateau-Mont-Royal, Rosemont–La Petite-Patrie, Verdun and Ville-Marie each require a permit. Le Sud-Ouest usually asks for no permit when the size, colour and look stay the same, but heritage sectors there need one.
A new opening, or a window of a different size, needs a permit in every borough.
How much is the permit, and how long does it take?
The fee is $9.80 per $1,000 of work. The minimum is $167.40 for a residential building. Heritage or architectural review can add fees.
Rosemont–La Petite-Patrie gives an average of 8 to 10 weeks for a different-size request, from a complete file. In Ville-Marie, a project that goes to review takes 1 to 3 months. Several boroughs say to get the permit before you sign the contract or buy materials.
Which window grants are open in November 2026?
Rénoclimat (Quebec) has new terms since October 1, 2026: $300 per ENERGY STAR window, up to $4,500 for a house or $6,000 for a multi-unit building. The window must go in an existing opening.
RénoPlex (City of Montreal, buildings of 1 to 5 homes) lists $410 per window and $550 per door on its amounts page. Its program page words window eligibility differently, so confirm with the city. You need written approval before work starts.
LogisVert (Hydro-Québec) does not cover window or door replacement. The Canada Greener Homes Grant is closed, and its loan is fully committed.
How do I check a window contractor's licence?
Search the Régie du bâtiment du Québec licence registry by licence number. The record shows the company, its licence categories and its bond.
Not sure the windows need replacing yet? Factory Direct Montreal, a window and door company in Montreal, lists the signs that a home needs new windowsPartner.
Questions people ask
Is PVC allowed in Montreal heritage sectors?
It depends on the borough. Le Sud-Ouest prohibits PVC window finishes in its heritage sectors. Rosemont–La Petite-Patrie asks that replacements match the original form and look. Ask your borough.
Does Hydro-Québec pay for new windows?
No. LogisVert states that installing or replacing windows and doors is not eligible work.
Sources (9)
- Ville de Montréal: replace doors and windows, same size (2026-07-30) (2026-11-13)
- Ville de Montréal: add or resize doors and windows (2026-01-31) (2026-11-13)
- Ville de Montréal: Ville-Marie project review (2026-11-13)
- Québec: Rénoclimat new terms (2026-10-13) (2026-11-13)
- Ville de Montréal: RénoPlex amounts (2026-08-18) (2026-11-13)
- Ville de Montréal: RénoPlex program (2026-06-19) (2026-11-13)
- Hydro-Québec: LogisVert (2026-11-13)
- Canada: Greener Homes Grant, closed (2026-11-13)
- RBQ: check a contractor's licence (2026-11-13)
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