The NCO Club holds immense historical, social, and political significance, symbolizing the spirit of patriotism and nascent nationalism in Singapore. It served as a vital hub where generations of military servicemen gathered in an inclusive, multi-ethnic environment, marking a pivotal milestone in colonial history. Together with three other conservation buildings, it forms a unique enclave showcasing Singapore's diverse architectural eras. 

Blocks 1, 9, and 14 reflect early Modernism with Art Deco influences, while The NCO Club embodies austere post-war Modernism, representing a rare intact example of modernist architectural heritage in Singapore. Its conservation significance lies in its role as a multi-ethnic recreation space, a repository of social memories spanning colonial to post-independence eras, and a catalyst for urban development in the Beach Road area.