The innovation focuses on analysing and cataloguing EU-funded projects related to Modern Methods of Construction (MMC) using dry and off-site techniques for building energy renovation. It aims to develop a standardized catalogue of modular solutions—covering materials, systems, and integration methods—to shift traditional on-site processes off-site, thereby reducing costs and time while enhancing quality. Despite each project’s unique features, common challenges are identified, and a clear trend emerges toward multifunctional modular façades that are customizable in appearance and capable of integrating renewable energy systems like Building Integrated Photovoltaics (BIPV) and Mechanical Ventilation Systems (MVC).