This case study explores Kinver, a Victorian mid-terrace property in Oxford that underwent a whole-house renovation and extension to deliver Passivhaus-level performance while preserving the building’s historic character. This Eco Design Consultants project demonstrates how deep retrofit can improve comfort, reduce heat loss and enhance long-term building resilience, while working sensitively with an existing structure. It also highlights the importance of careful design, detailed planning and a fabric-first approach when upgrading older buildings. During this webinar, the project team, led by Alan Budden, will share the retrofit journey, including the design strategy, construction challenges and lessons learned from delivering high performance within a traditional terrace property.

This case study explores Shepherd’s Barn, a traditional stone barn conversion that achieved EnerPHit Plus certification through careful planning, design and construction. The project, delivered by LEAP (Lovingly Engineered Architectural Limited) demonstrates how high-performance retrofit can be delivered within the constraints of existing construction, using a fabric-first approach to improve comfort, reduce heat loss and support long-term building performance. In this webinar, Mark Siddall will share the retrofit journey, including design decisions, construction challenges and lessons learned from delivering EnerPHit performance in a complex traditional structure.

This case study explores the Stretford EnerPHit retrofit project in Greater Manchester, recently featured in Channel 4’s House Without Bills. The project demonstrates how high-performance retrofit can be delivered in a traditional residential property, using a fabric-first approach to significantly improve energy performance while maintaining the character and functionality of an existing home. During this webinar, the project team Hannah Dixon from Progress in Practice and Joshua Day from Myzsa Group will share the retrofit journey, including the design strategy, technical challenges and lessons learned from delivering EnerPHit performance in a mainstream UK housing type.

This session showcases a Passivhaus EnerPHit retrofit project delivered by Colin Mendelowitz of AlchemyGreen, demonstrating how a whole-house performance approach can be applied to existing buildings to improve comfort, reduce heat loss and support long-term energy efficiency. The project highlights the practical application of EnerPHit principles, including fabric-first design, airtight construction and ventilation strategies, and illustrates how careful planning and design can transform an existing home. In this webinar, the project team will share high-level insights from the retrofit journey, focusing on key design decisions, technical strategies and lessons learned that can support better-informed retrofit decisions.

In this session, Carl Goodhew from G2 Construction and Consultancy will share insights from their EnerPHit retrofit project in of a Victorian home in Stratford. The scheme demonstrates how high levels of energy performance can be achieved in an existing building through a combination of fabric-first upgrades and low-carbon technologies. The project involved extensive structural and fabric interventions, including a new insulated ground slab, triple-glazed windows, MVHR ventilation, an air source heat pump and a two-storey timber extension designed to complement the existing building.