What does the term "Change in Major Occupancy" refer to in building classifications?

The term "Change in Major Occupancy" specifically refers to a change in the primary use of a building. This could involve a shift from one type of occupancy classification to another, such as converting a residential building into a commercial space, or vice versa. In building classifications, "major occupancy" is a critical concept as it dictates numerous factors, including but not limited to safety standards, building code requirements, and zoning regulations.

Understanding this term is essential for designers and builders, as it can impact everything from the structural design and materials to the necessary fire safety measures. For instance, a building designated as a residential facility has different safety and fire code requirements than a building used for assembly purposes, such as a theater.

This concept underscores the importance of accurately categorizing the use of a building to ensure compliance with regulations and to maintain the safety of occupants. In contrast, modifications in building size, updates in construction materials, or changes in safety protocols, while significant, do not fundamentally alter the classification of the building's major occupancy.