The use of codesign methods is becoming increasingly common practice to involve and engage research participants in health research. Through codesign, end-users and stakeholders can contribute their own perspectives and experiences to solve a common problem. This article describes how a 5-day codesign sprint can be used to find solutions to improve housing decisions of older adults. Based on case studies in Sweden and the Netherlands, we identified similarities, differences, and patterns across the two contexts. By sharing methodological experiences across projects, opportunities are created for other researchers to build on the method and to integrate a creative process into traditional health research methods. We conclude that a 5-day codesign sprint can effectively and efficiently engage older adults and people with dementia in creative housing decision solutions, and we provide recommendations for future codesign sprint projects.