LEED AP Operations and Maintenance (O+M) Practice Test

The USGBC does not enforce formal prerequisites for exam registration; anyone can register. However, it is strongly recommended that candidates have prior experience working on a LEED O+M project or possess a deep understanding of building operations and sustainable practices. Many successful candidates hold the LEED Green Associate credential first and have direct professional involvement in facility management, commissioning, or sustainability roles for existing buildings.

The LEED Green Associate is a foundational credential demonstrating core green building concepts and vocabulary across all LEED rating systems. The LEED AP O+M is a specialty credential that delves deeply into the technical specifics, strategies, and calculations of the Operations and Maintenance rating system alone. It is an advanced, practitioner-level certification focused exclusively on the ongoing performance of existing buildings.

The exam consists of 100 scored multiple-choice questions and 10 unscored pretest questions, to be completed in 2 hours. It is administered at Prometric testing centers or via online proctoring. The scoring is based on a scaled score, with a passing mark determined by the USGBC. You will receive a pass/fail result immediately upon completion. The questions are a mix of knowledge-based and application-based scenarios.

The essential resources are the official USGBC LEED O+M Reference Guide for the specific version of the rating system you are testing on (e.g., v4.1) and the USGBC's official candidate handbook. Supplementing with the USGBC's online credit library, relevant credit interpretation rulings (CIRs), and practical experience is crucial. Third-party study guides and practice exams can be helpful but should be used to complement, not replace, the primary official materials.

Yes, the LEED AP O+M credential must be maintained every two years through the Credential Maintenance Program (CMP). You must earn 30 continuing education (CE) hours, with a minimum of 6 LEED-specific hours related to the O+M rating system. The remaining hours can be in other LEED-specific or green building general education topics. This ensures professionals stay current with evolving standards, technologies, and best practices.