air rights
Legal term for the right to use or develop the space above a property. Used in real estate and urban planning contexts.
都市部では空中権の売買が行われることがある。
In urban areas, air rights are sometimes bought and sold.
Compound of 空中 (kūchū, 'air, midair') and 権 (ken, 'right'). A modern legal term likely calqued from English 'air rights'.