Urban strain and renewal: Evaluating unregulated densification in Kohima's urban core

Urban densification is widely promoted as a route to sustainable urban growth, yet its benefits are conditional: they depend on how, not just how much, additional development is absorbed. This distinction is especially consequential in hill towns, where topographic and infrastructural constraints amplify the impact of every unit of new construction. This oversight is particularly acute in rapidly urbanizing hill towns, where unregulated densification exacerbates i nherent morphological vulnerabilities, a phenomenon that remains deeply under-documented globally. To address this gap, this study examines Kohima, Nagaland, a spatially constrained high-altitude city in Northeast India, examining the impact of unregulated densification on urban form, function, and social dynamics. A 1-km urban corridor in the main town area was analysed over a decadal baseline (2015–2025) using qualitative spatial and morphological methods. Using qualitative spatial and morphological methods, the study draws on a transdisciplinary framework combining Patrick Geddes' diagnostic approach, Jan Gehl's human-centric urbanism, and urban acupuncture as a strategy for intervention. The findings show that Kohima's growth operates through aggressive, opportunity-led built-form additions namely infill development, vertical structural extensions, and low-density redevelopments, rather than planned compactness. This unregulated trajectory has culminated in systemic urban saturation, manifested in the loss of open spaces, increased street enclosure and degraded environmental quality, comfort, and safety, widespread encroachments and spillovers, a fractured human scale, and disrupted pedestrian movement, resulting in a degraded public realm. In response, the study proposes a sequenced, non-disruptive implementation framework: regulatory measures such as mandatory Green Retention Ratios, enclosure-based height limits, and geotechnical clearances, paired with five context-specific urban acupuncture interventions targeting high-strain nodes to restore safety, sociability, and environmental relief incrementally. By documenting a baseline case of hazardous densification under institutional fragility and customary land tenure, this study addresses the flat-terrain and Global North bias in urban design scholarship. It argues for shifting from density targets to capacity-led, context-sensitive densification, offering an actionable framework for incremental revitalization at the scale where daily life in these hill towns unfolds.