What is the minimum square footage for newly constructed buildings to require commissioning under Cal Green?

The requirement for commissioning in newly constructed buildings under California's Green Building Standards Code, commonly known as Cal Green, applies to buildings that exceed a specific minimum square footage. In this context, the correct answer aligns with the stipulation that buildings with a minimum square footage of 10,000 square feet require commissioning.

Commissioning is a systematic process to ensure that building systems are designed, installed, and tested to perform according to the owner's operational requirements. By establishing a threshold of 10,000 square feet, Cal Green emphasizes the importance of ensuring energy efficiency and operational effectiveness in larger buildings, which are more likely to have complex systems that benefit from a thorough commissioning process.

Understanding these requirements is essential for architects, contractors, and building owners to ensure compliance with state regulations and to promote sustainable building practices.