Getting started with GRESB

Considering participating in the GRESB Real Estate Assessment but unsure where to begin, what it requires, or how it will benefit your organization?

Is GRESB for you?

Regardless of region, sector, size, or strategy, all real estate managers have a place in the GRESB Assessments. The methodology enables fair, apples-to-apples comparisons across markets, sectors, and asset types—whether standing investments or developments—through curated and customizable peer groupings.

Real estate plays a central role in building a more sustainable, resilient, and efficient built environment. Managers and developers are increasingly expected to assess, manage, and report on performance in a structured and transparent way. As institutional and financial investors increasingly factor sustainability risks and opportunities into capital allocation decision, operational resilience and long-term value creation have become essential to protecting returns and achieving financial goals.

Research increasingly demonstrates a measurable relationship between GRESB participation and financial performance. Independent studies across Europe, Asia Pacific, and the United States show that participation in the GRESB Real Estate Assessment—and improvements in GRESB Scores—are associated with stronger non-listed real estate fund returns. These findings highlight the role of GRESB as a strategic partner and structured framework for improving performance, managing risk, and supporting long-term value creation. Learn more about the link between GRESB participation and financial returns.

View our 2025 GRESB participants to see the breadth of coverage across the real estate market.

When should I get started?

Starting early enables year-over-year improvement, demonstrates leadership to investors, and strengthens long-term performance.

Delaying participation until data feels “complete” can postpone valuable insights that drive measurable progress. Early participation establishes a baseline, supports peer comparison, and provides a structured pathway to improvement.

Participation also ensures recognition within the GRESB Benchmark—an important reference point for investors evaluating real estate strategies.

You can explore our first-year participant case studies to see how peers began their GRESB journey and the lessons they learned along the way.


There is a long-arc to performance data. Each day that goes by puts the recognition of your efforts further in the future.”
Thomas Stanchak
Director of Sustainability, Stoneweg US

What about scores?

Some managers who are looking to get started with GRESB may be concerned that assessment mistakes or a lack of data may be seen negatively by investors or result in a low score. This is why we offer all new members a “Grace Period”—the ability to participate in the assessment in the first year without the pressure or expectation to share results with anyone outside your organization. This provides time to become familiar with the assessment process without external scrutiny. Participants can also request a Pre-Submission Check and use the Assessment Correction service to verify submissions and correct errors.

In 2025, new participants entered the Real Estate Benchmark with an average score of 68, up 6 points from 2024. This year-on-year improvement highlights a maturing real estate market, where new entrants are coming to the Benchmark better prepared, with more established management practices, stronger data foundations, and closer alignment with GRESB Standards. Looking at historical data, we also see that, on average, new participants typically achieve a 10-point increase in their GRESB Score in their second year.

Some firms may also choose to begin with the Management Component only, allowing them to report on governance and strategic practices before submitting detailed performance data. This phased approach supports steady progress while reducing first-year reporting burden.

We chose to take advantage of the Grace Period, as we wanted to focus on getting to know GRESB as a reporting tool, find the right answers to the assessment questions, and stabilize the score for us as an entity to have a more reliable basis before publicly comparing ourselves with other companies.

Nickie Excellie
Head of Sustainability & Communications, Alecta Fastigheter

How does GRESB support you?

Participating in GRESB is more than completing an assessment. From onboarding to results, GRESB provides structured support to help you navigate the reporting process with confidence.

As a participant, you benefit from:

  • A 30-minute onboarding call with our Member Success Team
    New participants are offered a dedicated onboarding call to walk through the assessment structure, key timelines, and available resources—ensuring a clear and efficient start.
  • Grace Period for first-year participants
    In your first year, you may choose not to share results outside your organization. This allows you to establish a baseline and familiarize yourself with the process without external pressure.
  • Access to the GRESB Helpdesk
    Participants can contact the Helpdesk at [email protected] throughout the year for clarification on indicators, technical questions, or submission requirements.
  • Training, documentation, and guidance resources
    GRESB provides a comprehensive suite of training materials, reference guides, scoring documentation, webinars, and supporting tools designed to streamline reporting and improve data quality.
  • Additional assessment services
    Participants can also take advantage of optional Assessment Services to support them before, during, and after the reporting period—helping ensure accuracy, strengthen submissions, and maximize the value of results.

For additional guidance, you can also explore 10 common questions about GRESB, answered and How to prepare for a successful reporting period.

Do I need a consultant to participate?

Reporting on sustainability performance can require time and technical expertise. While many firms choose to work with external advisors, the GRESB Assessments are designed to be completed independently.

GRESB provides detailed guidance, documentation, and structured support throughout the submission process. Each firm can determine the approach that best fits its internal capabilities.

Many first-time participants choose to work with a GRESB Assessment Partner. These experienced sustainability consultants support participants throughout the GRESB Assessment process, including sustainability data management, reporting, and submission alignment. In addition, GRESB Solution Providers offer specialized tools, technologies, and services that help improve sustainability performance beyond the GRESB Assessment. These organizations support targeted, measurable improvements across portfolios throughout the year.

Explore the full Partner Directory to connect with the right organizations to support your goals.

How does the assessment work?

Real estate managers and asset owners report sustainability data to GRESB annually. Assessments open in April, close at the end of June, and preliminary and final results are released in September and October, respectively. See the full GRESB timeline here.

From their submission, participants receive:

  • Comparative performance insights relative to peers
  • A structured roadmap for strengthening performance
  • A platform for transparent engagement with investors

In addition to the predefined peer groups assigned by GRESB, real estate participants have access to the Customized Peer Group functionality. This feature allows participants to build a peer group based on selected characteristics—such as location, sector, or fund size—to further contextualize their performance.

Real Estate Participants also have access to the Score Contribution dashboard within the GRESB Portal. This feature provides deeper insight into how individual assets contribute to an entity’s overall GRESB Score, helping managers identify which assets are driving performance and where targeted improvements may have the greatest impact. By offering asset-level visibility, Score Contribution supports data-driven decision-making and more effective internal and external stakeholder engagement.

How do I get started?

Getting started is simple. Contact us to learn how the GRESB Assessments work and how investors use GRESB insights in their decision-making processes.

GRESB offers a suite of solutions and services designed to help members strengthen resilience, enhance performance, and maximize the value of participation.

To learn more about our services, reach out to us.

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