Final answer:
Large real estate developments that involve the planning and development of land into residential and commercial properties are commonly known as suburban communities or large-scale housing projects.
Step-by-step explanation:
Large real estate developments that involve the planning and development of land into residential and commercial properties are commonly known as suburban communities or large-scale housing projects. These projects are typically carried out by land developers and contractors who acquire and transform agricultural or rural land near cities. They may include the construction of housing complexes, shopping centers, office buildings, and other commercial infrastructure.