Energy efficiency through retrofit : Addressing domestic and non-domestic buildings
Abstract
Retrofitting the UK’s diverse building stock is a critical yet complex task, essential to achieving long-term energy efficiency, security, resilience, health and well-being and sustainability. The UK currently faces rising energy costs, ambitious net zero targets and an ageing building portfolio, putting building professionals under increasing pressure to develop effective retrofit strategies. This paper examines the practical aspects of retrofitting, including asset-level assessment, strategic planning and occupant engagement, while also addressing the risks and opportunities associated with different building types. Surveyors, building consultants, architects and engineers play a crucial role in understanding building conditions and coordinating retrofit projects. Standards such as PAS 2035 and PAS 2038 provide structured guidance, helping professionals manage risks and achieve sustainable improvements. While considerate retrofit adds lasting value, including benefits in terms of energy security, property value increases, avoidance of fuel poverty, affordability and sustainability, incorrect or inappropriate actions can lead to unintended consequences. A specialist approach is always recommended. This article is also included in The Business & Management Collection which can be accessed at https:// hstalks.com/business/.
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Author's Biography
Tassos Kougionis is a recognised technical expert in sustainability and energy efficiency within the UK construction sector. He holds a BEng and MEng in structural engineering and fluid mechanics from Aristotle University of Thessaloniki, an MSc in energy efficiency in buildings from University of Southampton, and an MSc with Distinction in biomedical engineering from University College London. Over the past 14 years, Tassos has led projects in UK policy development, planning, new build and retrofit standards and risk management. He has worked closely with policy makers to shape national technical and safety frameworks, including Publicly Available Specification (PAS) standards, Approved Documents L, F and O, as well as the Building Safety Act. He has also contributed to the development of guidance on industry best practices. Tassos has held senior commercial roles and has worked across both public and private sector projects. He has served as Director of ESG, Sustainability and Net Zero at McBains, and held positions at Currie & Brown, BSRIA and the Zero Carbon Hub. His work has made a significant contribution to advancing best practice and sustainability in the UK construction industry.
Citation
Kougionis, Tassos (2026, March 1). Energy efficiency through retrofit : Addressing domestic and non-domestic buildings. In the Journal of Building Survey, Appraisal & Valuation, Volume 14, Issue 4. https://doi.org/10.69554/VDMD8841.Publications LLP