Real estate and infrastructure managers, companies, and asset owners and operators submit their assessment data to GRESB on an annual basis. The GRESB Assessments open in April and submissions are accepted until the end of June, with preliminary and final results made available in September and October, respectively. See key dates in the table below. Please note that some details may be subject to adjustment.
GRESB Dates
Key dates for the 2026 reporting cycle.
| Assessment Development | YEAR-ROUND | New in 2026: GRESB Success Suite Requestable year-round Participants can request the GRESB Success Suite to access bundled support across the assessment cycle, combining technical guidance, quality checks, and performance insight in a single offering. |
New in 2026 Participants can request the GRESB Technical Expert Touchpoint service to receive one-on-one guidance and address specific questions at any stage of the assessment cycle. |
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| JANUARY | Standards and Reference Guides pre-releases | |
| Investors can review the 2025 Assessment Participants to calculate portfolio coverage before contacting managers to request participation in the 2026 Assessments. | ||
| Assessment Reporting Period | APRIL | April 1: GRESB Portal opens for the 2026 GRESB Assessments. Investors can use the “Invite” feature in the GRESB Portal o contact managers and prompt participation. The Response Tracker enables tracking of assessment progress. |
| Pre-Submission Checks can be requested from April 1 until June 20. | ||
| MAY | Pre-Submission Checks | |
| JUNE | Pre-Submission Checks can be performed until June 20 | |
| Validation, Scoring and Benchmarking | JULY | July 1: GRESB Assessment Portal closes on July 1, 23:59 PDT. This is the submission deadline for the 2026 Assessments. |
| AUGUST | Validation starts | |
| Scoring and benchmarking | ||
| August 1-15: “Customize Peer Group” functionality available to real estate participants | ||
| Assessment Results | SEPTEMBER | September 1: Launch of preliminary 2026 Real Estate and Infrastructure Assessment results for Participants only. |
| September 1-15: Assessment Correction (formerly Review Period) | ||
| Consultation Period | OCTOBER | October 1: Launch of 2026 GRESB Assessment results for Participants and Investors. Results available in the GRESB Portal. |
| October 1: Results Performance Reviews (formerly Results Consultation) can be requested until January 30. |
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| Public results events | ||
| NOVEMBER | Public results events | |
| DECEMBER | Public results events |