For commercial and residential buildings, what defines the project boundary?

The project boundary for commercial and residential buildings is defined as all areas under the control of the building owner or manager. This encompasses not just the interior spaces that are directly rented or occupied, but also common areas and any external spaces that are maintained by the building’s management.

This definition is crucial because it establishes the extent of the building's operational and environmental responsibilities. For instance, areas such as lobbies, parking lots, recreational facilities, and gardens that are part of the property fall under the owner's or manager's jurisdiction and thus should be considered part of the project boundary for purposes such as health and wellness assessments, sustainability practices, and compliance with various building performance standards.

Other options, such as only considering rented spaces, outer landscaped areas, or public sidewalks and playgrounds, do not adequately capture the entirety of the project boundary. Limiting the boundary to rented spaces ignores the significance of common areas, which can have a major impact on the health and well-being of all occupants. Focusing solely on landscaped areas or public spaces ignores the responsibilities and management of private spaces that also contribute to overall health, safety, and environmental impact. This comprehensive understanding of the project boundary is vital for effective building management and promoting a healthy environment for occupants.