Revaluing Modern Architecture: Changing conservation culture

The conservation of our Modern architectural heritage is a subject of vehement debate. When do buildings become old or significant enough to warrant special heritage status and protection? Should Modern listed buildings be treated differently from those of earlier periods? And what does all this mean for building users and owners, who might be better served if their buildings were less authentic, but more comfortable and usable?

Presenting a clear line of sight through these complex question...