The traditional architecture of Himachal Pradesh, particularly the unique Kaath Kunni houses, stands as a testament to the indigenous construction techniques deeply embedded in the cultural heritage of the region. However, amidst rapid urbanization and modernization, these architectural marvels face the threat of extinction, posing a significant challenge to the preservation of the state's cultural heritage. This research paper delves into the intricate architectural features of Kaath Kunni houses while examining the factors contributing to their decline. Drawing upon a combination of field surveys, archival research, and interviews with local artisans and residents, this study aims to document the rich heritage associated with Kaath Kunni houses and shed light on the underlying causes behind their dwindling presence. It explores the socio-economic, cultural, and environmental factors influencing the abandonment of traditional building techniques in favor of modern construction practices. Furthermore, the paper evaluates existing conservation efforts and proposes strategies for the sustainable preservation of Kaath Kunni houses, emphasizing the importance of community involvement and governmental support in safeguarding this invaluable heritage. By highlighting the significance of indigenous architecture in Himachal Pradesh, this research contributes to the broader discourse on heritage conservation and sustainable development in rapidly evolving societies.