Renée Gailhoustet had a profound impact on Ivry-sur-Seine through her modernist architecture and urban planning initiatives, evident across the district in numerous buildings. Emphasizing social housing and integrated community spaces, she revitalized the cityscape, creating vibrant neighborhoods that prioritize functionality, sustainability, and community interaction.

Renée Gailhoustet's architectural and urban planning contributions to Ivry-sur-Seine represent a transformative period in the city's development during the latter half of the 20th century. Her approach was rooted in a deep commitment to social equity and sustainable urban design, which manifested in numerous projects across the district.

Gailhoustet's vision for Ivry-sur-Seine encompassed not just the creation of buildings but the cultivation of entire neighborhoods designed to enhance the quality of life for residents. She pioneered the integration of social housing within mixed-use developments, ensuring that residential areas were complemented by essential amenities such as cultural spaces, parks, and communal facilities. This holistic approach aimed to foster a sense of community and well-being among inhabitants, setting a new standard for urban planning in France.

One of her notable achievements was the redevelopment of the Ivry-Port area, where she successfully transformed a former industrial zone into a dynamic urban hub. This project exemplified her ability to blend historical context with modern functionality, creating spaces that were both architecturally striking and socially inclusive. By revitalizing neglected urban areas, Gailhoustet not only improved living conditions but also stimulated economic growth and cultural vitality within Ivry-sur-Seine.

Gailhoustet's work in Ivry-sur-Seine continues to resonate as a success story in urban planning circles. Her designs have stood the test of time, providing enduring solutions to the challenges of urbanization and social integration. The legacy of her approach can be seen in the enduring vibrancy and sustainability of the neighborhoods she helped shape, where residents continue to benefit from well-designed spaces that promote interaction, accessibility, and a high quality of life.