Outdoor amenities in residential complexes: A comparative analysis of Pre-1990s and Post-1990s developments of Ulaanbaatar, Mongolia

Abstract

The collapse of socialist planning in the early 1990s fundamentally reshaped urban development trajectories across post-socialist cities. In Ulaanbaatar, Mongolia, housing policy prioritized rapid residential provision through intensified redevelopment of Soviet-era microdistricts and the expansion of new residential complexes, while district-scale planning and coordination of social infrastructure remained limited. This study examines how increased development density has altered outdoor spatial characteristics and physical comfort under this transition. Using GIS-based spatial indicators—floor area ratio (FAR), building coverage ratio (BCR), population density, and open space per capita—we analyze 214 residential complexes (15 pre-1990 and 199 post-1990) and compare development periods using one-way ANOVA. Field surveys were additionally conducted at seven representative residential complexes based on 13 standardized indicators of outdoor physical comfort. The results indicate that post-1990 residential complexes exhibit substantially higher development intensity, with FAR and BCR increasing by approximately 9.5 and 5 times, respectively. This densification has significantly reduced the amount of available open and green space, leading to a sharp decline in per-capita outdoor space provision (4.47 m2 in post-1990 developments compared to 51.95 m2 in pre-1990 microdistricts). Only one residential complex satisfies the national minimum green-space standard, and among the 199 post-1990 complexes, only six provide dedicated educational facilities. These findings demonstrate that market-driven densification without coordinated district-scale planning has resulted in “housing without urban planning,” diminishing outdoor amenity quality and raising concerns regarding spatial equity and urban livability. The study underscores the need for enforceable green-space standards, systematic provision of public facilities, and integrated district-level planning frameworks under the city's Master Plan to support more inclusive and livable post-socialist urban development.