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100+ Free LEED AP O+M Practice Questions

Pass your LEED AP Operations + Maintenance exam on the first try — instant access, no signup required.

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2026 Statistics

Key Facts: LEED AP O+M Exam

100

Exam Questions

GBCI

2 hrs

Test Time

GBCI

170+

Passing Score (out of 300)

GBCI

$250-350

Exam Fee

GBCI

75+

Min ENERGY STAR Score

LEED O+M

2 yr

Credential Validity

GBCI

The LEED AP O+M exam has a 65-70% pass rate for prepared first-time takers. The 100-question computer-based exam is 2 hours long with a $250-350 fee. A scaled score of 170+ (out of 300) is required. The exam covers sustainable operations of existing buildings including energy performance (ENERGY STAR), water efficiency, IEQ, green cleaning, and waste management.

Sample LEED AP O+M Practice Questions

Try these sample questions to test your LEED AP O+M exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1What is the primary focus of the LEED AP O+M specialty?
A.New construction design
B.Interior design and construction
C.Operations and maintenance of existing buildings
D.Neighborhood development
Explanation: The LEED AP O+M (Operations + Maintenance) specialty focuses on the sustainable operations and maintenance of existing buildings. It covers energy performance optimization, water efficiency, indoor environmental quality management, waste reduction, and ongoing commissioning for buildings already in operation.
2Which LEED rating system does the LEED AP O+M specialty specifically address?
A.LEED BD+C: New Construction
B.LEED O+M: Existing Buildings
C.LEED ID+C: Commercial Interiors
D.LEED ND: Neighborhood Development
Explanation: The LEED AP O+M specialty addresses the LEED O+M: Existing Buildings rating system. This system is designed for buildings that are already operational and focuses on improving their sustainability performance through better operations, maintenance, and upgrade strategies.
3What is the minimum ENERGY STAR score required for the Energy Performance prerequisite in LEED O+M?
A.50
B.65
C.75
D.85
Explanation: LEED O+M requires a minimum ENERGY STAR score of 75 for the Energy Performance prerequisite. This means the building must perform better than 75% of similar buildings nationwide. ENERGY STAR scoring uses actual energy consumption data normalized for weather, operating hours, and other variables.
4What does LEED O+M require regarding building-level energy metering?
A.Metering is optional
B.Whole-building energy metering with at least 12 months of continuous data
C.Only electricity metering is required
D.Sub-metering of every floor
Explanation: LEED O+M requires whole-building energy metering with at least 12 months of continuous data. This prerequisite ensures that building energy performance is accurately measured and tracked, enabling performance benchmarking, trend identification, and informed decision-making about energy improvements.
5Which tool does LEED O+M use for benchmarking building energy performance?
A.RETScreen
B.ENERGY STAR Portfolio Manager
C.eQUEST
D.DOE-2
Explanation: LEED O+M uses ENERGY STAR Portfolio Manager for benchmarking building energy performance. Portfolio Manager allows building owners to track energy and water consumption, compare performance against similar buildings, generate ENERGY STAR scores, and identify improvement opportunities across their portfolio.
6What is the minimum indoor water use reduction required by the LEED O+M Water Performance prerequisite?
A.10% below baseline
B.20% below baseline
C.30% below baseline
D.No specific minimum, just metering
Explanation: LEED O+M requires a minimum 20% reduction in indoor water use below the baseline established by EPAct 1992 fixture performance requirements. This is achieved through efficient fixtures, fittings, and appliances including low-flow faucets, dual-flush toilets, and efficient urinals.
7What does LEED O+M require for ongoing commissioning of existing buildings?
A.One-time commissioning at certification
B.Ongoing commissioning with regular monitoring and optimization of building systems
C.Commissioning only of HVAC systems
D.No commissioning requirements
Explanation: LEED O+M requires ongoing commissioning with regular monitoring and optimization of building systems. Unlike initial commissioning for new buildings, existing building commissioning is a continuous process that identifies operational issues, optimizes system performance, and ensures that building systems maintain efficiency over time.
8Which LEED O+M credit category addresses indoor air quality management?
A.Sustainable Sites
B.Energy and Atmosphere
C.Indoor Environmental Quality
D.Materials and Resources
Explanation: The Indoor Environmental Quality (IEQ) category addresses indoor air quality management in LEED O+M. It covers IAQ management programs, green cleaning, indoor air quality assessment, thermal comfort, lighting, and acoustic performance — all focused on maintaining healthy indoor environments for building occupants.
9What is the LEED O+M approach to green cleaning?
A.Cleaning is not addressed in LEED O+M
B.Implement a green cleaning policy using certified cleaning products and sustainable cleaning practices
C.Only natural cleaning products are required
D.Cleaning frequency must be reduced by 50%
Explanation: LEED O+M requires implementing a green cleaning policy that uses certified cleaning products (meeting Green Seal, EPA Safer Choice, or UL ECOLOGO standards), sustainable equipment, and environmentally preferable practices. Green cleaning reduces occupant exposure to harmful chemicals while maintaining building cleanliness.
10What does the LEED O+M Sustainable Sites category address?
A.Only landscaping
B.Exterior site management including transportation, landscaping, stormwater, heat island, and light pollution
C.Building structural integrity
D.Interior finishes
Explanation: The LEED O+M Sustainable Sites category addresses exterior site management including alternative transportation support, site management practices, stormwater management, heat island reduction, and light pollution control. These credits focus on maintaining sustainable site conditions during ongoing building operations.

About the LEED AP O+M Exam

The LEED AP O+M credential demonstrates expertise in the sustainable operations and maintenance of existing buildings using the LEED O+M rating system. Candidates must understand energy performance optimization, water efficiency, indoor environmental quality, green cleaning, waste management, and ongoing commissioning — all focused on improving sustainability during the operational phase of a building's lifecycle.

Assessment

100 multiple-choice questions covering LEED O+M categories: Energy & Atmosphere, Water Efficiency, IEQ, Materials & Resources, and Sustainable Sites

Time Limit

2 hours

Passing Score

170+ scaled score (out of 300)

Exam Fee

$250 combined ($350 stand-alone) (GBCI (Green Business Certification Inc.))

LEED AP O+M Exam Content Outline

25%

Energy & Atmosphere

ENERGY STAR benchmarking, ongoing commissioning, renewable energy, demand response, and refrigerant management

15%

Water Efficiency

Indoor water reduction, outdoor water management, cooling tower water use, process water, and metering

25%

Indoor Environmental Quality

IAQ management, green cleaning, thermal comfort, lighting, acoustics, occupant surveys, and ventilation

15%

Materials & Resources

Sustainable purchasing, waste management, facility alterations, electronics, and hazardous waste

20%

Sustainable Sites & Transportation

Site management, alternative transportation, heat island, light pollution, stormwater, and exterior maintenance

How to Pass the LEED AP O+M Exam

What You Need to Know

  • Passing score: 170+ scaled score (out of 300)
  • Assessment: 100 multiple-choice questions covering LEED O+M categories: Energy & Atmosphere, Water Efficiency, IEQ, Materials & Resources, and Sustainable Sites
  • Time limit: 2 hours
  • Exam fee: $250 combined ($350 stand-alone)

Keys to Passing

  • Complete 500+ practice questions
  • Score 80%+ consistently before scheduling
  • Focus on highest-weighted sections
  • Use our AI tutor for tough concepts

LEED AP O+M Study Tips from Top Performers

1Focus heavily on Energy & Atmosphere and IEQ — they carry the most weight and cover the most credits
2Understand ENERGY STAR Portfolio Manager scoring methodology and how buildings are benchmarked
3Master the green cleaning program requirements: products, equipment, entryway systems, and staff training
4Know the performance period concept — LEED O+M requires 12 months of actual performance data
5Study ongoing commissioning processes and how they differ from initial building commissioning
6Learn sustainable purchasing policies for consumables, durable goods, and facility alterations
7Review ASHRAE 62.1 (ventilation) and ASHRAE 55 (thermal comfort) as referenced by LEED O+M
8Understand recertification requirements — LEED O+M certification must be renewed periodically

Frequently Asked Questions

What is the LEED AP O+M exam?

The LEED AP O+M exam is a specialty credential for professionals in sustainable operations and maintenance of existing buildings, administered by GBCI.

How many questions are on the LEED AP O+M exam?

The exam has 100 multiple-choice questions to be completed in 2 hours.

What score do I need to pass the LEED AP O+M exam?

You need a scaled score of 170 or higher out of 300 to pass the LEED AP O+M exam.

Do I need LEED Green Associate before taking LEED AP O+M?

Yes, you must hold an active LEED Green Associate credential to register for the stand-alone O+M specialty exam, or you can take the combined LEED GA + O+M exam.

How does LEED AP O+M differ from LEED AP BD+C?

LEED AP O+M focuses on existing building operations and maintenance, while BD+C focuses on new building design and construction. O+M uses actual performance data over 12+ months.

What is the ENERGY STAR score required by LEED O+M?

LEED O+M requires a minimum ENERGY STAR score of 75 as a prerequisite, meaning the building must outperform at least 75% of similar buildings.

Can I take the LEED AP O+M exam remotely?

Yes, the stand-alone specialty exam can be taken at Prometric test centers or via ProProctor online. The combined exam is test-center only.