How does BCxP apply to existing buildings versus new buildings?

• A. It applies only to existing buildings.
• B. For existing buildings, focuses on performance improvement; for new buildings, verifies design intent and start-up.
• C. For existing buildings, ignores performance; for new, only building aesthetics.
• D. It applies to existing buildings and new buildings alike without distinction.

Answer: (B)

The main idea is that BCxP covers both existing and new buildings, but with different emphasis. For existing buildings, the goal is performance improvement through retro-commissioning or ongoing commissioning—finding and fixing operating issues, optimizing systems, and achieving energy efficiency and occupant comfort. For new buildings, the focus is on verifying that the design intent is realized and that the project is handed over in a verified, functional state through design reviews, construction oversight, functional testing, system integration, and operator training at start-up. This is why the best description is that BCxP applies to both types of buildings with distinct objectives: improve performance in existing buildings, verify design intent and start-up in new buildings.