Master-planned communities promise security, exclusivity, and efficiency—but beneath their pristine digital infrastructure lies an unspoken vulnerability. As real estate developments become hyperconnected ecosystems, they also become prime targets for cyber adversaries. Unlike major cities with robust oversight, these private enclaves operate on fragmented security models, centralized network dependencies, and unregulated smart grids—all of which introduce systemic risks investors and policymakers have yet to confront. This article dissects the unseen attack surfaces within smart communities, the cascading financial consequences of cyber-physical breaches, and the urgent need for proactive security leadership. In a market shift already underway, the only question left is: who will act before the first catastrophic breach forces irreversible change?