Quebec has extended the transition period for its construction and electrical codes, giving project proponents more time before updated requirements take effect. Under a new regulation published in late August and in effect as of Sept. 10, work that begins before Oct. 17, 2027 can proceed under earlier code editions, according to REMI Network. The extension matters for glazing contractors and building envelope specialists because Quebec's construction code includes building envelope requirements that affect fenestration, and the date a project commences determines which code edition applies.
What the extended transition covers
The updated construction code, adopted last year to largely align with the 2020 model national construction code, initially had a compliance deadline of Oct. 17, 2026. The updated electrical code, reflecting the 2021 model national electrical code, was adopted earlier this year with a transition that was to expire Sept. 26, 2026. REMI Network reported that the new regulation extends the window for commencing work to Oct. 17, 2027. The extension is especially relevant for multifamily buildings with more than four units and for rental landlords and condominium corporations undertaking major renovations, because those projects must eventually ensure adequate electrical capacity and infrastructure for electric vehicle charging equipment. At the same time, the construction code transition also affects building envelope components, including fenestration, even though the sources do not specify every clause that changes.
EV charging and building infrastructure
The Gouvernement du Québec explains that new residential buildings must be built with basic electrical infrastructure to enable the supply of power to charging stations in their parking spaces. The requirement becomes mandatory usually six months after the modification to the Construction Code. For buildings with four or fewer dwelling units, that date was April 1, 2019, following a code amendment on October 1, 2018. For buildings with more than four dwelling units, the mandatory date is Oct. 17, 2027, reflecting the extended transitional period after a code amendment on March 26, 2026. Even with the provincial reprieve, project proponents still must comply with applicable municipal bylaws, such as those dictating requirements for EV charging, according to REMI Network. This means a glazing or envelope project that proceeds under older provincial codes may still face local requirements that influence electrical room placement and exterior design.
Mandatory dates for new buildings
The Gouvernement du Québec page lists the two effective dates clearly: April 1, 2019 for buildings with four or fewer dwelling units, and Oct. 17, 2027 for buildings with more than four dwelling units. These dates apply to the basic electrical infrastructure requirement, not directly to fenestration clauses, but they illustrate how code amendments phase in over time and why an extended transition period carries practical significance for project planning.
Why fenestration professionals should pay attention
Quebec's construction code includes building envelope requirements, and the extended transition provides a longer runway for specification decisions. A project that starts before Oct. 17, 2027 can be designed to the previously adopted edition, potentially allowing specifiers and fabricators more time to adapt to updated air leakage, thermal performance, or structural requirements. The extension avoids a scenario where a project already in the design phase must be revised to meet new construction code provisions before construction begins. However, the REMI Network report does not detail which fenestration clauses change, so design teams should verify the applicable edition for their specific project.
Municipal requirements remain
REMI Network noted that despite the provincial reprieve, project proponents still have to comply with any applicable municipal bylaws, such as those dictating requirements for EV charging. For glazing contractors working on multifamily projects, local zoning and permit conditions can still mandate EV-ready parking, which influences electrical capacity planning and sometimes adjacent building envelope details. The Gouvernement du Québec page states that no legal or regulatory obligation currently requires installing charging stations in existing multiple dwellings, but new residential buildings must be built with the infrastructure. That contrast is important for renovation projects, where the provincial code transition may not be the only driver of EV charging compliance.
Planning for EV charging in existing buildings
The Gouvernement du Québec outlines that adapting a rental building or condominium to install charging stations can be a significant project. Building managers must assess the configuration and capacity of the electrical infrastructure, the layout of parking spaces, and the available professional and financial resources. The page recommends options such as private or shared stations, energy management systems, and hiring a project manager specialized in EV charging. These choices can influence building envelope work because adding electrical capacity or routing conduit may require penetrations and exterior modifications. Québec's Electric Vehicle Charging Strategy aims to adapt approximately 600,000 parking spaces in multiple dwellings by 2030, and the Écorecharge program offers financial assistance for analysis, infrastructure upgrades, and charging station installation projects. Glazing contractors may be involved when renovations require new openings or replacement windows alongside these upgrades.
What this means for timelines
The extension buys about a year compared with the original construction code deadline of Oct. 17, 2026. A project proponent who can demonstrate work commenced before Oct. 17, 2027 can use the older editions; if work begins after that date, the updated construction and electrical codes apply. The REMI Network report does not say whether partial permits or site preparation count as commencement, so project teams should seek clarification. For fenestration suppliers, this affects specification lock dates: if a project remains under the older code, products specified to the earlier edition may remain compliant. The Gouvernement du Québec page also offers guidance on EV charging installations, including energy management systems that can avoid upsizing electrical infrastructure, which can indirectly reduce the scope of building envelope changes in existing buildings.
Canadian context
Quebec's update aligns with the 2020 model national construction code, while other provinces follow their own adoption schedules. The National Building Code of Canada and CSA A440 standards provide baseline fenestration requirements, but Quebec's construction code governs within the province. The extension does not change standards such as CSA A440 directly, but it shifts when projects must meet updated code provisions. This is a Canadian-specific development because provincial adoption of national model codes varies, and project proponents in Quebec now have a defined date to manage.
What to watch
Contractors and specifiers should track the Oct. 17, 2027 commencement date, confirm whether municipal bylaws add requirements, and verify which construction code edition applies to their project. The Gouvernement du Québec page provides guidance on EV charging installations, including energy management systems that can avoid upsizing electrical infrastructure. While not directly about fenestration, those infrastructure decisions can affect building layout and exterior design. For glazing and building envelope teams, the key takeaway is that Quebec's extended transition provides a compliance window, but project-specific due diligence remains essential.