D&J Project Management Ltd

Judges comments: This Cambridgeshire home, built in the 1920s and extended in the 1970s and 1980s, underwent a major retrofit to improve energy efficiency while maintaining its traditional charm. The "Warm Core" strategy focused on upgrading the central part of the house with advanced energy-saving measures like solar PV with battery backup, underfloor heating, an air-source heat pump, and airtight construction. Challenges included tight deadlines, unforeseen roof defects, and extreme weather, but the project was completed on time. The approach emphasises sustainability with the use of local materials, waste recycling, and renewable energy solutions.