Extra care housing (ECH) is a type of housing with care and support designed to enable older people to age in place. Approximately one fifth of residents living in ECH are living with dementia and yet, there remains gaps as to how best to support people to live well with dementia in the context. ECH stock across the United Kingdom (UK) includes a diverse range of options that can be grouped into integrated, specialist and separated accommodation. Integrated models involve residents with dementia living alongside residents without dementia. Specialist ECH offer accommodation exclusively for people living with dementia. Separated models offer a separate area for residents with dementia within a larger, integrated site. How these different models work for residents living with dementia is little known and has remained a significant gap in knowledge that impairs both professionals and people living with dementia when choosing housing and care. This paper reports on findings from a large study of residents living with dementia in ECH. The focus is on the potential benefits and challenges of different models of provision. Data were generated from interviews with 100 participants (residents, family members, staff, and adult social care professionals) at eight case study sites across England. Findings demonstrated that there are potential benefits and challenges within each model, but the limited diversity of stock limits choice. Multiple variables beyond the model of provision affect the lived experience, meaning that there is no universal model of optimal support. Rather, the approach and resources of each site is more important than the model of provision. Suggestions for future research directions are considered.