GBCI has released the first addenda to the SITES v2 rating system, which enables sustainable land design and development certification. Addenda are official updates to the rating system and are now available on the SITES resources webpage.  

These addenda were issued to provide clarifications to frequently asked questions or credit misinterpretations, and to make changes to better reflect the latest research and market conditions. Reviewing the addenda is intended to be a manageable process for project teams so that they can interpret and use them moving forward.  

Within these, there are both clarifications and credit changes, such as:  

• Credit 4.8: Optimize biomass. The biomass density index value for "unmanaged grass layers" (i.e., prairie) has been increased to more accurately reflect its provision of ecosystem services. Additionally, a new resource (RESOLVE) was provided to assist projects in determining the site’s terrestrial biome.  
• Credit 6.9: Encourage fuel efficient and multi-modal transportation. The option regarding electric recharge or alternative recharge stations now includes a minimum quantity. Additionally, the option for short- and long-term bicycle parking has more flexibility depending on site programming and use.  

The addenda table will continue to be updated as needed, so keep an eye out for future notifications as we work to evolve SITES to meet market and customer needs.  

Projects that register after Jan. 6, 2025, must comply with the addenda requirements. Projects that were registered beforehand are not required to comply but are strongly advised to follow the addenda.  

Learn more about the addenda or directly download the resource.