The LEED AP O+M exam is officially certified by the USGBC and serves to evaluate a candidate's knowledge regarding green building operations, existing building performance, and sustainable maintenance practices. Candidates are required to answer 100 questions over a total duration of 120 minutes to demonstrate their professional competency in the field of sustainable building management.
This certification is intended for experienced professionals with green building project experience who are seeking official USGBC credentialing. It is ideal for individuals currently managing existing buildings, facility operations, and complex maintenance strategies within the sustainable construction industry.
To prepare effectively, candidates should review the official candidate handbook and study all USGBC reference materials provided for each of the seven domains. It is recommended to practice calculating performance scores for transportation, water, and energy use to ensure you are comfortable with the technical requirements of the exam and the specific standards required for success.
This domain covers the general LEED certification process, project administration, and the specific requirements necessary for building operations and maintenance to ensure compliance with established green building standards and protocols for all project types.
This section focuses on location and transportation strategies, reducing pollution resulting from daily commute patterns, and the proper methods for conducting transportation surveys to improve overall site accessibility and sustainability for the building and its occupants.
This domain addresses sustainable sites, including rainwater management, heat island reduction, light pollution reduction, and effective site management practices to maintain ecological balance and environmental health around the building facility and the surrounding local landscape.
This area focuses on water efficiency, the use of permanently installed water meters, monthly water consumption tracking, and the technical methods for calculating water performance scores to optimize building resource usage and reduce overall waste.
This domain covers energy and atmosphere, including energy audits, refrigerant management, energy metering, and the calculation of greenhouse gas emissions scores to ensure high energy performance standards are consistently met throughout the building operational lifecycle.
This section addresses materials and resources, including purchasing policies, facility maintenance policies, and waste performance tracking to ensure that all building materials are managed sustainably throughout the entire operational lifecycle of the facility and its systems.
This domain focuses on indoor environmental quality, including minimum indoor air quality standards, environmental tobacco smoke control, and the implementation of green cleaning policies to protect the health of building occupants and improve overall interior conditions.
Arrive prepared for a 120-minute test consisting of 100 questions. Manage your time carefully across all seven domains to ensure you meet the passing score of 170/200 required for certification.
The exam contains exactly 100 questions that are designed to evaluate your professional knowledge across seven distinct domains of building operations and maintenance as defined by the USGBC standards for sustainable facilities.
The official passing score required to successfully earn this credential is 170/200. Candidates must demonstrate sufficient proficiency across all tested domains to achieve this specific score on the exam to earn the designation.
The total duration allotted for the exam is 120 minutes. It is important to manage your time effectively during this period to ensure you have enough time to answer all questions and review your work.
This professional credential is certified by the USGBC, which provides all official candidate handbooks and study guides necessary for your preparation and understanding of the certification requirements and the overall exam structure.
If you have questions regarding the future of this certification or potential updates, please check with USGBC for the current certification path and any relevant changes to the exam requirements or professional standards.
Verified 2026-09-14
All exam details, domain structures, and technical requirements are derived directly from USGBC official documentation and candidate handbooks to ensure the information provided is accurate, current, and reliable for all test takers.