Population ageing makes the management of older people’s living conditions increasingly important. This article assesses Healthy Life Years (HLY) as a policy-analytic screening indicator for needs relating to housing, transport, local services, information and assistive technologies. The study analyses Eurostat HLY estimates produced using the Sullivan method for Poland, Czechia, Germany and the European Union and derives expected years lived with activity limitations (LOA) and their share in remaining life expectancy (PLOA). Values for 2015 and 2023 are juxtaposed, with observation flags used to distinguish comparable differences from breaks in series. In 2023, women in Czechia had the highest PLOA among the countries and sex groups analysed; in all three countries, women also had higher LOA values than men. HLY, LOA and PLOA do not identify a specific barrier or intervention. Their management value emerges through four stages: recognising a population-health signal, establishing a functional profile, auditing the age-friendly environment, and selecting and monitoring action. The original contribution is a translational framework and decision matrix linking the indicator system to housing, transport, local services, information and assistive technologies. The indicators initiate further assessment and priority setting but do not replace local data, environmental audits or user research.