This article critically examines Martin Heidegger’s conception of language as the “house of being”, a phrase that has become central to his later philosophy. Through an advanced, scholarly analysis, the article explores six major themes: the philosophical context of Heidegger’s statement, the ontological structure of language, the interplay of language and world-disclosure, the poetic dimension of language, the critique of representational models, and the implications for contemporary philosophy. Drawing on thirty scholarly sources, the discourse situates Heidegger’s thought within broader debates in continental philosophy, hermeneutics and phenomenology. The article demonstrates how Heidegger’s understanding of language challenges traditional views, emphasizing language’s world-forming power and its role in human dwelling. The conclusion synthesizes the main arguments and reflects on the enduring significance of Heidegger’s insights for the philosophy of language, ontology and linguistics.