Discursive Power, Social Sustainability, and Ageing in Place in a Coastal Queensland Suburb: An Exploratory Citizen Science Case Study

Background: Contemporary older adults, especially the baby boomer generation, expect to actively shape their communities rather than passively receive services. Supporting ageing in place is a key issue for social sustainability, as communities need to remain inclusive, accessible, and liveable for ageing populations. While participatory approaches are increasingly promoted, implementation remains top–down and expert-driven. Older adults often express their experiences of the built environment through everyday language rich in emotion, memory, and sensory details, yet these forms of knowledge are typically dismissed as informal or subjective. As a result, their lived spatial experiences remain institutionally invisible in age-friendly planning and design. Methods: This exploratory case study analysed textual comments submitted by older adults in a coastal suburb in Queensland through a participatory Citizen Science initiative. An integrative framework combining GIS mapping, content analysis (CA), sentiment analysis (SA), and critical discourse analysis (CDA) was used to examine how older adults describe, evaluate, and negotiate their built environments. Results: GIS mapping showed that older adults chose to document familiar, accessible public spaces, such as parks, civic precincts, and transport corridors, reflecting routine-based patterns of use. Content analysis revealed a focus on modest but essential built environment features, including shaded seating, footpaths, signage, and pedestrian crossings, which supported comfort, safety, and social engagement. Sentiment analysis found that 67% of comments were positive and 18% neutral, indicating broad satisfaction but also strategic emotional framing. CDA identified three exploratory interpretive patterns, Affective Evaluation, Narrative Anchoring, and Modal Negotiation, through which older adults expressed emotion, belonging, and concern within this limited corpus. Conclusions: Ageing in place depends not only on physical infrastructure but also on discursive inclusion, that is, whether older adults’ everyday ways of speaking are heard and recognised in participatory planning. This study shows that older adults actively shape spatial meaning through emotion, memory, and caution, and that their language carries both experiential insight and civic intention. Recognising these discursive signals may help inform more responsive, age-inclusive, and socially sustainable participatory planning.