Remembered largely for the controversial rebuilding of the Bank of England and for his role in the construction of New Delhi, Herbert Baker (1862–1946) was responsible for architecture in the wider British empire as well as his native England. This article appraises ways in which Baker and his work linked these spheres through an analysis of India’s High Commission in London, India House (1928–30), the first extended scholarly account of the building. In doing so, it focuses on how architecture designed by Baker during the interwar period evoked the assumption by India of ‘dominion status’, a label applied to imperial regions deemed to have attained a position of equality alongside Britain on the basis of their constitutional development. The article locates the new High Commission at the convergence of an interwar imperial vision emphasising the status of the dominions and India’s path towards independence, contributing to an architectural history of British imperialism as urged for in recent years. Constructed at the heart of the imperial capital, India House was a highly visible declaration of India’s transition from a position of dependence to one approaching parity with Britain and the ‘old’ or ‘white’ dominions. As well as substantiating Baker’s commitment to India’s envisaged future as a dominion, the building shows significant consistencies of approach and intent when set against contemporaneous work in New Delhi, manifesting interconnections between the two spaces and the pivotal role of the architect in linking them.