View Cart

Overview: What Will Be On the LEED for Existing Buildings: Operation and Maintenance Exam?

The LEED Green Building Operations and Maintenance test is a two-part exam. The first part is actually the same as the Green Associate exam, which is a 2-hour, 100 question test. The second part is the O&M portion, which is specifically about the Existing Buildings: Operations and Maintenance reference guide and is also a 2-hour, 100 question test. So overall, it’s a 200 question, 4 hours exam. You can choose to take the GA exam first, and then the O&M exam at a later date.

The O&M portion of the exam will test your knowledge of the information in the Green Building Operations and Maintenance reference guide. You will need to memorize all prerequisites, credits and their related details in order to successfully complete the exam.

The O&M reference guide is broken down into the following 6 categories:

  • Sustainable Sites (SS)
  • Water Efficiency (WE)
  • Energy and Atmosphere (WE)
  • Materials and Resources (MR)
  • Indoor Environmental Quality (EQ)
  • Innovation in Operations (ID)

There is also a section about regional priority you should learn about.

Each category is broken down into related prerequisites and credits. Prerequisites are mandatory requirements that a project team must fulfill. If the project fails to meet even just one of the 10 prerequisites, it will not qualify for LEED certification. No points are earned for fulfilling the requirements of the prerequisites.

Credits are where the points are earned. Each credit contains a different strategy and specific requirements that you need to memorize backwards and forwards. Each credit is neatly broken down further into the following parts:

  • Intent
  • Requirements
  • Benefits and Issues to Consider
  • Related Credits
  • Summary of Referenced Standards
  • Implementation
  • Timeline and Team
  • Calculations
  • Documentation Guidance
  • Examples
  • Exemplary Performance
  • Regional Variations
  • Operations and Maintenance Consideration
  • Resources; and
  • Definitions

It’s your job to understand each and every part of each prerequisite and credit. It’s a lot of information to cover, especially with around 60 prerequisites and credits in total – but planning ahead, creating a schedule and studying smart will give you the best chance to pass.

Feel free to use any of the resources found on, and don’t be afraid to ask questions in the comment sections below – everyone is here to learn and help each other out.

I wish you the best of luck.

Click here for the best Study Guides & Practice Exams

No Comments Yet

Leave a Comment

Please refrain from posting any exam questions that are from the actual LEED exam or other sample exams. This jeopardizes the existence of the open comment format. Such comments will be deleted. Thank you for your understanding.


Study Guides

My recommendations for the most helpful study guides and audio books that you can find for every LEED rating system.
Click for more info....

Study Guides

Practice Exams

There are tons of practice exams available to help you study for your LEED exam. Here are the BEST practice exams you can find that I’ve personally used and recommend to anyone.
Click for more info....

Practice Exams

Continuing Education (CE) Units

This 30 hour package includes everything you need to meet the GBCI Credential Maintenance requirements for LEED APs with Specialty.

Continuing Education (CE) Units


Find out where LEED exam prep classes are being held in your local area. Training courses will help you get through the exam process quickly and easily.
Click for more info....


About Me

About Me

Hi! My name is Pat and I’m the guy behind I graduated with a B.A. in Architecture from the University of California Berkeley, and was working in an Architecture firm for the last few years in Southern California...


Get the Newsletter

To get FREE updates and information about LEED v3, please enter your name and email below. I will never give away, trade or sell your email address. I HATE SPAM, and you can unsubscribe at anytime.

I’m studying for the test now and I’ve found a wealth of knowledge on your site. I really appreciate your hard work!


Read more Testimonials »