Mueller is a 711-acre Planned Unit Development (PUD) in East Austin. The project is in the process of long-term development on the former site of the Robert Mueller Municipal Airport, which was closed in 1999 upon the opening of Austin-Bergstrom International Airport in southeast Austin. Mueller is intended to be a pedestrian-oriented, interactive mixed-use community, and a model for responsible urban planning and development.

Per the developer, Catellus, the value of the Mueller development upon completion will be $1.3 billion and will comprise 4.2 million square feet of non-residential development, 650,000 square feet of retail space, 4,600 homes, and 140 acres of open space. An estimated 10,000 permanent jobs within the development will have been created by the time it is complete.