Marta Drzymala

The October 2015 quarterly LEED rating system and reference guide addenda are now available.

To view the changes:


Four new LEED Interpretations were published (10422-10425).

  • LEED Interpretation 10422 provides an optional scoring path using Title 24 2013 for LEED v4 Homes projects in California.
  • Two LEED Interpretations have been published addressing the refrigerated storage market. LEED Interpretation 10423 clarifies ventilation requirements, while LEED Interpretation 10424 approves the use of the IARW/IACSC Energy Modeling Guideline for Cold Storage and Refrigerated Warehouse Facilities for energy modeling. The IARW Guideline consolidates previous LEED Interpretations under an industry-developed guidance.

Also see LEED Interpretation 10420, which states that energy modeling using the 2012 Seattle Energy Code can now be considered an acceptable compliance alternative for demonstrating achievement of the LEED 2009 and LEED v4 energy modeling requirements (published 7/1/2015).


Nine corrections were published for LEED v4 (100002028-100002036). Notably, EQ Credit Indoor Air Quality Assessment, in the LEED v4 ID+C and LEED v4 BD+C rating systems, was updated to include full CREL values for target chemicals and maximum concentration.

To see all corrections, download the reference guide correction tables.

2015 Pilot Credits

Prevention through Design supports high-performance, cost-effective employee safety and health outcomes across the building life cycle through early attention to safety and health hazards. Learn more.

No Cooling Tower—Alternative Compliance Path allows certain LEED v4 project types without a cooling tower to earn the LEED v4 Cooling Tower Water Use credit.

Alternative Energy Performance Metric ACP allows an alternate metric for documenting performance improvement when using Option 1. Whole Building Simulation as the compliance path in EA Prerequisite Minimum Energy PerformanceEA Credit Optimize Energy Performance and EA Credit On-Site Renewable Energy. The ACP does not change any other aspect of the referenced prerequisites and credits.

LEED Lab is a multidisciplinary immersion course that utilizes the built environment to educate and prepare students to become green building leaders and sustainability-focused citizens. In the course, students assess the performance of existing facilities on campus and choose one building where they will facilitate the LEED for Building Operations and Maintenance (LEED O+M) process with the goal of certifying the facility. This new pilot credit recognizes and promotes the adoption of this course at institutions of higher learning. Learn more about establishing a new LEED Lab course by expressing interest.

EQ Pilot ACP: ETS Control for Projects in Japan provides an alternative to the LEED v4 Environmental Tobacco Smoke prerequisite; available only for projects in Japan.

Looking for more? View all of the LEED pilot credits in the LEED pilot credit library or within the LEED credit library under the pilot credit category of any rating system.