Air rights refer to the legal right to use, develop, or control the space above a piece of land. Municipalities can sell or lease air rights above public property—like transit stations, municipal parking lots, or public buildings—allowing developers to construct buildings in that space. This generates revenue for the municipality while enabling more intensive urban development without requiring new land. For example, a city might sell air rights above a bus terminal, allowing a developer to build an office tower on top while the transit facility continues operating below. Air rights transactions are complex, involving structural engineering, legal agreements, and ongoing access arrangements, but they represent creative ways for cities to fund infrastructure or services.