The individual or organization most likely to make a decision based on the spatial pattern of residential neighborhoods in Singapore would be a government agency, such as the Urban Redevelopment Authority (URA) or the Housing Development Board (HDB). These agencies are responsible for urban planning, housing policies, and community development, and they use spatial data to promote social integration, equal opportunities across ethnicities, and sustainable urban growth

. Singapore’s government actively manages residential patterns to ensure ethnic mixing and social cohesion through policies like ethnic quotas in public housing, which are designed to avoid ethnic enclaves and foster interaction among different groups

. The URA and HDB use spatial patterns to plan housing, transport, community facilities, and public spaces, aiming to create inclusive and livable neighborhoods

. Therefore, government planning agencies focused on urban development and social policy would be the primary decision-makers using such spatial maps to guide housing allocation, infrastructure development, and community services in Singapore.