Timeline

The GRESB Assessment cycle follows a structured set of milestones designed to support participants throughout the reporting process — from preparation and submission to results review and performance planning. Please check back periodically to ensure you do not miss any important deadlines.

The GRESB Data Center Assessment operates year-round. Participants may resubmit their assessment as needed, and an updated Insights Report will be generated once GRESB completes validation and scoring of the submitted response.

GRESB Dates

Key dates for the 2026 reporting cycle:

May	Assessment Development	Standards and GRESB Guides are released.
July	Assessment Opening	July 15: The assessment opens for participants.
November	Benchmark Report	Benchmark results are released to Participants and made available in the GRESB Portal.
November	Public Results	Public results events.
Year-Round	Onboarding Service	Starting in July, new participants may request an onboarding call. Please contact your Account Manager to schedule.
Year-Round*	Resubmission	Starting in August: Participants may resubmit their assessment as needed.
Year-Round*	Insights Report	Starting in August: Insights Reports become available following submission and completion of validation and scoring. Results available in the GRESB Portal.

Year-Round*: In 2026, Resubmission and Insights Reports become available starting in August.

From this date onwards, participants may resubmit their assessment as needed and will receive an updated Insights Report within 4 weeks of each submission.

Key dates for future reporting cycles:

The assessment will be available year-round with on-demand insights reports and fixed dates for the Benchmark. This means participants will be able to submit and re-submit as from the start of the reporting period, with an insights report being made available within a maximum of 4 weeks from the submission.