A room that is accessory to another occupancy must be less than what area to be classified as Group B?

To classify a room as Group B when it serves as an accessory space to another occupancy, the maximum allowable area is 750 square feet. This classification is important for building inspection purposes as it helps determine occupancy loads, safety requirements, and regulatory compliance.

When a room exceeds 750 square feet, it may require a different classification and adhere to different fire codes and safety regulations, which can impact things like egress requirements, fire protection systems, and overall building design. Understanding these limits is crucial for inspectors to ensure the safety and functionality of commercial buildings. The specifications around Group B occupancy are aimed at ensuring that smaller accessory spaces can be used flexibly without imposing the same extensive requirements as larger primary spaces.