LEED (Leadership in Energy and Environmental Design) is an internationally recognized green building certification system developed by the U.S. Green Building Council. Buildings earn LEED certification (Certified, Silver, Gold, or Platinum levels) by meeting standards for energy efficiency, water conservation, sustainable materials, indoor air quality, and environmental impact. Many Canadian municipalities require or encourage LEED certification for public buildings and major developments. LEED-certified buildings typically have lower operating costs, healthier indoor environments, and reduced environmental footprints. Some municipalities offer incentives like expedited permits or density bonuses for LEED-certified private developments.