Loire-Atlantique développement is a public engineering agency that brings together teams of experts and expertise to advise, design, and implement projects for the benefit of the residents and territories of the Loire-Atlantique department. Since 2013, Loire-Atlantique développement has been committed to a comprehensive and forward-thinking approach to accompany transitions in the fields of urban renewal, development, construction, architecture, urban planning, environment, biodiversity, and sustainable tourism. They offer their services to elected officials, technicians, professionals, and private project developers, as well as individuals and education professionals.

Their portfolio includes a wide range of projects, including the development of sustainable tourism, urban redevelopment, prospective territorial planning, and environmental initiatives. With a focus on building a better future, Loire-Atlantique développement is dedicated to creating the framework for tomorrow's quality of life in Loire-Atlantique