Which USGBC rating system is primarily focused on the sustainable construction of residential properties?

The right answer is LEED for Homes, which is specifically designed to address the unique needs and challenges of the residential construction sector. This rating system emphasizes various aspects of sustainable building practices tailored for homes, including energy efficiency, water conservation, indoor environmental quality, and sustainable site development.

LEED for Homes incorporates strategies and standards that reflect the different dynamics and living conditions of residential properties compared to commercial buildings. By focusing on homes, this system provides guidelines and benchmarks that encourage the development of healthier, more sustainable living environments for occupants.

The other options, while also promoting sustainability, are geared toward different types of structures and uses. For instance, LEED for Schools focuses on educational facilities, LEED for Neighborhood Development combines principles of smart growth, urbanism, and green building in community planning, and LEED for Existing Buildings targets improvements and upgrades for already constructed commercial projects. Each of these systems has a distinctive focus that does not align with the specific context of residential construction, making LEED for Homes the most suitable choice for promoting sustainable residential properties.