Poor energy performance in the housing sector in the UK is a critical problem in achieving climate change goals. However, energy retrofits do not show satisfactory progress due to the lack of interest of the homeowners, because they fail to make the decision to retrofit the house. Studies suggest that awareness itself does not lead to action. The objective of this study is to identify and analyse the practices of homeowners that prompt housing retrofit decision-making. A practice theory approach with interview data collection was used to identify the practices of homeowners in their contexts. The findings of the study indicate that the prompting events for housing retrofit decision-making emerge during the routine practices of the homeowners. By coupling motivation and ability with prompts, the retrofit progress is likely to be initiated. Retrofitting houses can be a personal choice as well as a social norm. Existing policies and measures to drive retrofit are mainly focused on technical aspects. The study suggests a rather socially-driven approach, aligned with the prompting points of homeowners’ practices leading to greater decision-making of housing retrofits.