Building Energy Performance covers key aspects of building thermal performance, focusing on heat loss and energy-efficient construction. It explores sustainable design strategies, including the use of software tools for designing energy-efficient buildings, SAP/SBEM compliance, energy performance certification, and simulation. The module also examines the integration of low and zero-carbon technologies (LZCT) into buildings and the concept of zero-carbon buildings. Additionally, it covers testing building performance targets through methods such as airtightness testing, thermography, etc.