GRESB August Update | Preliminary Results & Assessment Correction Launching Soon; Save The Date for GRESB Insights Events

August brings a full slate of updates—from the countdown to preliminary results, to real progress on the Road to Performance, to where you can meet the GRESB team in person this fall. Here’s what’s ahead.

In this edition, you’ll find:

• 2026 GRESB Regional & Partner Insights Events: locations, dates, and early access
• Road to Performance consultation findings update
• Preliminary results, Assessment Correction, and year-round support.

Read on for details.

See where you can connect with GRESB in 2026.

On Tuesday, September 1, GRESB will release the 2026 preliminary results, giving participants an advance look at their Benchmark Reports before final results on October 1.

To support this review, the Assessment Correction window will be open from September 1 through September 15. The service is designed to strengthen the reliability of results by allowing participants to correct errors in their data input.

New in 2026: Validation Findings Summary

The 2026 Validation Findings Summary, available in the GRESB Portal, brings greater transparency to the validation process. The report sets out the responses that could not be fully confirmed and the reasoning behind each decision, helping participants review their results and make the most of the Assessment Correction window.

Log in to the GRESB Portal on September 1 to view the report.

Assessment Correction

How it works

Participants review their Preliminary Benchmark Report and, if needed, request a correction through the GRESB Member Success Team. If a correction is appropriate, the assessment will be temporarily unlocked for edits and must be re-submitted within three business days.

What can be amended

Participants can amend responses, update hyperlinks, add documentation, or correct performance data that was inadvertently left out before July 1. Please note that new data collected after the submission deadline cannot be added.

All changes made through the Assessment Correction service will be re-validated, re-scored, and reflected in the final Benchmark Reports released on October 1.

Learn more about Assessment Correction.

Year-Round Support

Although the 2026 GRESB Assessment submission period has closed, a range of services remain available to support participants through the next stages of the assessment cycle—from validation and preliminary results to understanding final results and preparing for future participation.

• Technical Expert Touchpoint: Available year-round, this service provides focused, one-on-one facetime engagement with a GRESB Member Success expert, offering tailored guidance at any stage of your GRESB journey.
• Success Suite: A new bundled offering that brings together core premium support elements in the GRESB journey, including: one GRESB AP seat, one Technical Expert Touchpoint, one Pre-Submission Check, eligibility to opt in to Assessment Correction, and one Results Performance Review.
• Results Performance Review: Available after results are released on October 1, this service provides a forward-looking understanding of Benchmark Results, helping participants identify opportunities for improvement and prepare for future assessment cycles.

Together, these offerings are designed to guide participants through the Assessment cycle with greater clarity and confidence.

None of this is final yet—the report summarizes the consultation findings and how the feedback is informing the next stage of the GRESB Foundation’s work. It does not set out final decisions. GRESB expects to publish the finalized updates in Q4 2026. They will apply from the 2028 Standard, assessing 2027 data.

Read the findings report.

Industry insights from our partners and members into “Nature-Based Solutions” and other rolling topics:

• Why biodiversity and Nature-Based Solutions shouldn’t be treated as a standalone topic | EVORA
• The Delivery Gap: Why the Real Estate Industry Keeps Getting in Its Own Way | EVORA
• Nature-Inspired Indoor Air Quality: How Dielectric Barrier Discharge Ionization Supports Healthy Buildings | AtmosAir
• Demystifying Data Center Typologies: A Sustainability Framework for Data Center Investment | Brightworks Sustainability
• Sector intelligence on data centers in the era of artificial intelligence | SE services

Interested in contributing? Check out the 2026 GRESB Editorial Calendar for fixed monthly topics and submission guidelines. The topic for September is “Sustainability Performance Impact on Valuations.”