RT Conference Proceedings T1 Urban Density in Portland (USA). The experience of the Urban Growth Boundary. A1 Cimadomo, Guido K1 Urbanismo - Portland (Estados Unidos) K1 Densidad de población K1 Cinturones verdes K1 Naturaleza - Conservación AB This study explores the Urban Growth Boundary (UGB) in Portland, Oregon, implemented in 1979 as a strategy to control urban sprawl and protect natural resources. While the UGB successfully restricted expansion and preserved rural lands, it has faced challenges in fostering higher-density development within its limits. Portland’s metropolitan area still comprises predominantly lowdensity, single-family homes, which strains public services and increases car dependency. The paper examines four urban development projects, offering insights into Portland's efforts to boost urban density. Findings highlight a complex balance between policy goals, private sector involvement, and cultural factors favouring suburban lifestyles. Although the case study projects promote density, car dependency and infrastructure limitations persist as significant obstacles. To sustain higher-density living, Portland must further refine its policies and enhance public-private collaboration. PB ISOCARP SN 978-90-75524-81-9 YR 2025 FD 2025 LK https://hdl.handle.net/10630/40402 UL https://hdl.handle.net/10630/40402 LA eng NO Aporta autorización para autoarchivo. NO Ministerio de Universidades NO Programa de Recualificación del Sistema Universitario Español DS RIUMA. Repositorio Institucional de la Universidad de Málaga RD 12 abr 2026