LEED v5 certification: what building managers in Québec need to know

LEED v5 certification

According to the Canada Green Building Council (CaGBC), buildings are responsible for nearly 30% of total greenhouse gas emissions, 35% of waste sent to landfills, and can consume up to 70% of municipal water. These figures highlight just how central the building sector is to the energy transition and the fight against climate change in Canada.

It is in this context that the new LEED v5 certification marks a turning point. It places decarbonization, resilience, and occupant quality of life at the core of priorities. More rigorous, better adapted to local realities, and more closely aligned with environmental policies, this new version of LEED charts a path toward truly sustainable buildings that comply with emerging legal requirements, including Québec’s Bill 41 on building energy performance.

Reference sources used for this article:

• • Canada Green Building Council (CaGBC) 
  • US Green Building Council (USGBC) 
  • Government of Québec — Loi 41 : Loi sur la performance environnementale des bâtiments, 2023
  • Hydro-Québec — Programme ÉcoPerformance et efficacité énergétique commerciale, 2024
  • ASHRAE — Standards 90.1-2022, 62.1-2022 (Energy & IAQ)
  • Energy Star Portfolio Manager Canada — Benchmarking data, Natural Resources Canada, 2023
• BAULNE– Certification LEED
• BAULNE Experts CVAC — Interview with Dzmitry, energy efficiency engineer, October 2025

Why LEED v5 is a game changer

LEED version 5 is a clear response to the climate crisis and carbon neutrality goals. It pushes the industry toward a measurable performance trajectory by integrating the three most powerful levers: energy, materials, and operations.

In Canada, the CaGBC coordinates local implementation, ensuring adaptation to climatic conditions and North American design practices. With more than 6,000 certified buildings to date, the Canadian market is a global leader and will serve as a testing ground for LEED v5.

Bill 41 and LEED v5: complementary frameworks

Québec’s Bill 41 will soon require the publication of an energy performance index, periodic audits, and penalties for non-compliance. LEED v5 becomes a practical tool to structure this approach:

Measure → Reduce → Prove

By adopting LEED v5, owners and operators can more easily comply with upcoming energy performance obligations while increasing the value and resilience of their assets.

See also:

• Free LEED scorecard
• Energy efficiency grants

What really changes with LEED v5

• Integrated decarbonization: nearly 50% of points are now tied to carbon reduction (operational and embodied).
• Low-GWP refrigerants: mandatory leak tracking and transition to environmentally friendly fluids.
• Indoor air quality (IAQ): higher filtration thresholds, enhanced ventilation control, and stronger acoustic and visual comfort requirements.
• Life cycle assessment (LCA): mandatory calculation of embodied carbon for materials and construction sites.
• Continuous performance: strong incentives to implement real-time monitoring through building management systems (BMS).

Comparison table: LEED v4.1 vs LEED v5*

*Sources: USGBC (v5 pages, “What’s new,” change summaries), CaGBC (v5 prerequisites), third-party technical analyses.

How BAULNE supports the transition

• Energy audit – to establish your baseline profile (EUI, ventilation, refrigerants, operating hours).
• LEED v5 + Bill 41 roadmap – identification of target credits and legal requirements.
• Recommissioning (RCx) – operational optimization with potential efficiency gains of 20–30%.
• Design-build – equipment replacement using low-carbon, high-performance technologies.
• Grants – full support for applications (up to 80% reimbursement possible).
• Building automation and monitoring – monthly energy tracking, alerts, and automated LEED reports.
• Performance reporting – documentation compliant with Bill 41 and CaGBC requirements.

Discover our services:
HVAC Services
Maintenance
Design-build
Energy optimization
Building automation

LEED v5 certification FAQ

Does LEED v5 apply to existing buildings?
Yes. The Operations + Maintenance (O+M) systems have been updated to include continuous monitoring and carbon performance.

What are the benefits for a building manager?
Reduced energy costs, improved comfort, and proactive compliance with Bill 41.

Which technologies are favored?
Centralized control systems (building automation), low-GWP refrigerants, heat recovery, and electrified equipment.

What is the link between LEED and Québec grants?
A LEED v5-compliant project may also qualify for programs such as ÉcoPerformance or Hydro-Québec’s high-performance building initiatives.

The BAULNE approach: expertise, authority, and comprehensive support

• Expertise – over 20 years of experience in building mechanics, audits, and commissioning.
• Authority – methodologies aligned with USGBC, CaGBC, and ASHRAE standards.
• Transparency – clear reports, measurable indicators, and documented ROI.
• Long-term partnership – continuous support for your carbon strategy and operations.

Read other articles written by our experts.

Take action

Plan a visit from one of our experts.
Our specialists will analyze your situation, establish your LEED v5 + Bill 41 transition plan, and help you secure available grants.

Schedule a visit today →

About BAULNE

BAULNE – A local company, leader in building mechanics.
For over 20 years, BAULNE has been simplifying HVAC management for business clients through intelligent solutions that reduce operating costs while improving comfort and productivity. Our motto: Caring for people and buildings
Learn more →