— ASSET PORTAL GUIDE —

Seamlessly report your environmental performance data
As part of the Performance component of the 2021 GRESB Real Estate Assessment, participants are required to report information at both portfolio and asset level.
The GRESB Asset Portal enables participants in the GRESB Real Estate Assessment to report environmental performance data at the asset level either via the GRESB Asset Spreadsheet or by connecting to the GRESB Asset API.
The indicators are then aggregated to complete the Performance Indicators aspect in the GRESB Real Estate Assessment.
How to use the GRESB Asset Portal
To help you make the most of the GRESB Asset Portal, we have provided the most important steps for your submission:
Upload Data
1. Visit https://portal.gresb.com/ and login with your user credentials, or create an account by clicking “Sign up for GRESB“.
2. Visit your Assessment Portal and select the entity for which you would like to manage assets.
3. Select “Assets” in the right hand navigation.
If you have opted to connect your data management system to the GRESB Asset Portal via the API, or you are working with a GRESB Data Partner, steps 4 and 5 will be taken care of automatically.
4. Download the GRESB Asset Spreadsheet and enter your data. See guidance on using the GRESB Asset Spreadsheet
Important! If you entered data in a previous year and wish to edit your existing assets. Please click “Export Data to Excel“. This will provide you a pre-populated GRESB Asset Spreadsheet with your entity’s assets.
5. Click “Upload Assets in Excel” to upload your spreadsheet.
Important! To create a new asset in the GRESB Asset Portal, leave the field GRESB Asset ID empty. To update an existing asset, enter the asset’s ID into the column GRESB Asset ID. Assets with a duplicate or non-existent ID will be rejected.
6. You will receive an email once the import has been processed. You may leave or refresh the page at any time. Please note, if you upload a new spreadsheet while we are processing an import for you, your import will be overwritten with the latest upload.

Asset Data Validation
Asset Portal Guidance Video
In addition to this guidance page, we have developed a free online training course to guide you through the Assessment reporting process. Please register here for the online training. This video is part of the online training course and covers the steps set out above.
Contact a GRESB Data Partner
If you would like to integrate your data with our API, please contact a GRESB Data Partner in your region.