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  • Annette Crewz

LEED Existing Buildings Operations & Maintenance


The intent of LEED for Existing Buildings is to promote high-performance, healthy, durable,

affordable, and environmentally sound practices in existing buildings. It encourages owners

and operators of existing buildings to implement sustainable practices and reduce

environmental impact of their buildings over their functional life cycles.


For LEED for Existing Buildings certification, sustainable operations performance is being

measured for the building and site over a period referred to as the performance period. The

performance period is a continuous, unbroken time, without gaps. It must be a minimum of

three months for all prerequisites and credits except Energy and Atmosphere Prerequisite 2

Minimum Energy Efficiency Performance and Credit 1 Optimize Energy Performance, which

have a duration of one year.


There are many challenges in obtaining LEED for Existing Buildings certification, the following are some helpful tips we have learned along the way.


Proposal Phase

  • Onboarding consultants needs to happen during this phase

  • These consultants may be a Commissioning Agent (CxA) and energy consultant to assist with Energy and Atmosphere and Indoor Environmental Quality prerequisites and credits

Discovery Phase Investigation

  • Develop a process for the discovery phase that evidence-based

  • Obtain copies of existing policies and procedures

  • Speak with the User responsible parties

  • Evaluate the documentation and reporting/tracking capabilities

  • Provide reporting/tracking forms for User responsible parties as needed

  • Ask probing questions about compliance

  • Prepare a checklist for both the consultants and User responsible parties

  • Schedule audits and surveys to correspond with site visits and ensure that User responsible parties are scheduled as well

Performance Period Documentation


Monthly check-ins with consultants and User responsible parties.


Site Visits

  • Face time with the Client and User responsible parties

  • Review status of reporting/tracking

  • Perform audits as needed: waste, etc.

  • Perform surveys as needed: site, occupant, cleaning assessment, IAQ, etc.

These tips, among other strategies we employ, help our clients achieve a more sustainable

future using LEED for Existing Buildings. Have a project that could use some positive change? We’d love to hear from you.

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