The realty sign lighting and display assembly is in the form of a real estate standard having a vertical post and a horizontal cross-arm from which depends a display panel. The cross-arm is specially constructed to incorporate within it anti-theft and display components and components for powering the anti-theft display components. Thus, the cross-arm includes a solar panel, preferably at the top of the cross-arm, and a rechargeable battery connected to the solar panel. The battery powers one or more spot lights located in the bottom of the cross-arm and directed at the display panel below the cross-arm. The solar panel includes electrical heating elements which keep the solar panel free of snow. A thermal sensor may be disposed in the top of the cross-arm and be connected to a switch operating the solar panel. An alarm connected to the battery prevents theft of the cross-arm. Preferably, the alarm includes a pendulum switch activatable by moving the cross-arm. The switch may be connected to a programmable coder. The cross-arm also includes a continuous advertising tape broadcast by a radio transmitter in the cross-arm. A door bearing a lock in the cross-arm provides access to the components in the cross-arm.