Compounding Vulnerabilities: An Architectural Study of the Socio-Spatial, Economic, and Environmental Characteristics of Marginalized Waterfront Communities in Port Harcourt, Nigeria, and Its Implications for Social Work and Development Practice

This article reports architectural research that characterises the socio-spatial, economic, and environmental conditions of marginalised waterfront communities in Port Harcourt, Nigeria: Abonnema Wharf, Bundu Waterside, and Marine Base and draws out their implications for social work and development practice. Conducted from within the discipline of architecture, the study treats the built environment not as a backdrop to social disadvantage but as an active agent in its production and its potential relief. Using a structured questionnaire administered to 364 respondents and semi-structured interviews with nine informal traders and community leaders, gathered as part of a broader architectural investigation of the colonial-era mercantile buildings these communities occupy, the study documents a population that is occupationally informal (41.5% traders, 24.5% artisans, against only 11.3% civil servants), gender-balanced (52.5% male, 47.5% female), and predominantly youthful (31.0% aged 25–34), with residency patterns spanning recent arrivals and multi-generational households. Environmentally, 75.3% of respondents reported that flooding disrupts waterfront economic activities, and qualitative testimony identifies twice-daily tidal inundation distinct from episodic storm flooding as the dominant and most economically corrosive environmental stressor, eroding trader capital through repeated small losses rather than single catastrophic events. Spatially, the disconnection between boat-landing points and trading areas imposes a hidden transaction-cost burden on every trade cycle. The article argues that these three dimensions socio-demographic composition, environmental vulnerability, and spatial disorganisation are mutually reinforcing rather than independent, and that any welfare, livelihood, or infrastructure intervention addressing only one dimension will fail to relieve the compounding pressure the other two continue to exert. The findings demonstrate how architectural evidence can inform the Sustainable Development Goals, gender-responsive social protection, and community-based social work practice in Nigeria, and make the case for interprofessional collaboration between built-environment researchers and social workers.