The DesHCA research aimed to develop designs for homes that could support people as they age, including if they develop cognitive, physical and/or sensory challenges. As part of this effort, an understanding of the perspectives and experiences of professionals involved in delivering such homes was important, particularly to consider the challenges and facilitators in the process. To gain an authentic, immersive understanding of this, an ethnographic approach was used in housing provider/developer organisations. The ethnographies aimed to observe home developments in action, and the interactions of those involved, particularly how they facilitated or constrained home design. Three workplace topic-oriented ethnographies were conducted, to examine the interactive processes involved in delivering projects producing age and cognitively supportive housing. Three researchers studied each of the sites, observing interactions and interviewing a small number of key individuals, spending time within the organisations and observing work practices and interactions in real time. The archived data includes fieldnotes and transcribed interviews.As we age, many of us will experience cognitive changes, and for some of us, these will develop into dementia. We know that people's homes can make the experience of cognitive changes more difficult, or can enable continuing inclusion and sense of self-worth and self-esteem. DesHCA worked with people experiencing ageing and cognitive change and those who design and develop housing. DesHCA identified housing innovations that can support living better for longer with cognitive change. Our emphasis on healthy cognitive ageing goes beyond narrow conceptions of 'dementia-friendly design' into a more expansive and inclusive approach to housing innovation. The multidisciplinary DesHCA team involved stakeholders from all areas of housing provision, including people experiencing ageing and cognitive change, architects and designers, housing experts, planners, builders and housing providers. Older people were integral to DesHCA and their health was at its heart. The project designed homes that act as demonstrators and test-beds for innovations to support healthy cognitive ageing. These designs have been developed and evaluated from stakeholder points of view, then considered at a larger scale to examine their real-world feasibility. DesHCA is feeding directly into the UK and Scottish Government City Region Deal for Central Scotland (Stirling and Clackmannanshire), providing groundwork for local housing developments. The focus of this is sustainable, lifetime health, community and economic development, addressing deprivation and inequality. To achieve these aims, DesHCA took a co-production approach, with the whole team working to identify innovations that engage with their real-world experiences and aspirations. We used a range of data collection methods and produced analyses informed the design of the demonstrator houses. These designs evolved as stakeholders interacted with them and provided feedback from their different points of view. To collect data, we asked older people to map and evaluate their own homes and to experience and comment on new design features using virtual reality (VR). They then collaborated with builders, architects and housing providers in VR workshops to identify practical, realistic and affordable designs that can support healthy cognitive ageing, and therefore longer healthy, independent life. Partners came together in interactive workshops to convert designs into plans within a fictional town, building and retrofitting homes, creating services and managing budgets. We demonstrated how designs can work out in the real world, and how to bring together the various interests involved. Throughout, issues of costs were considered, to inform business planning and help make decisions on implementation of the new designs. The impact of DesHCA is achieved through showing what works in housing design for healthy cognitive ageing. Immediately, DesHCA will feed into the City Region Deal and longer term we will provide tools for future developers to inform their decisions about housing for healthy cognitive ageing. Throughout the project, disseminate findings were distributed to the housing, architecture and building sectors through stakeholder networks. We have published rigorous research findings to provide a peer reviewed, high quality research base for innovation. Thus the project goes beyond recommendations and guidance to provide evidence to support delivery at scale, grounded in the co-production approach that draws on the real experience, interests and imperatives that drive different stakeholders.

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