This dissertation focused on the relation between the physical environment and social well-being of rural-to-urban migrants living in the informal settlements of Ulaanbaatar, Mongolia. This project consisted of three deliverables: 1. Integrative and thematic literature review on physical interventions to improve social outcomes at neighborhood scale in both informal settlements and high resource settings (affluent suburbia e.g.,) 2. Mixed method empirical research on migrants in ger-areas of Ulaanbaatar, Mongolia. It was an explanatory sequential mixed methods study in which in-depth interviews in 2019 (n=77) were followed up with confirmatory quantitative survey in 2021 (n=241). 3. Short film “Unlawful in the Homeland” which provides a grounded perspective for pre-migrants with authentic and varied experiences of migrants who live in the city (qualitative interviews later confirmed that this was a pressing need). As the migration ban of 2017 in Ulaanbaatar was still ongoing and up for repeal in 2020 when filming was underway, a large focus was dedicated to the deleterious effect the ban had on rural-to-urban migrants in Mongolia.