When does renting an apartment in the Land of Israel to a non-Jew become a Torah prohibition?

This source-based Torah study examines the question: When does renting an apartment in the Land of Israel to a non-Jew become a Torah prohibition? It follows the canonical Hebrew discussion through the weekly Torah portion and the Jewish sources cited there. This localized discovery layer is a concise abstract, not a full translation and not a practical ruling. Any halakhic, medical, legal, security, bereavement, political, interfaith, disability, historical or other sensitive claim remains subject to the canonical review status and should not be treated as individualized advice or as an empirical conclusion.