His work shows a sensitive appreciation of the local climate and of the employment of vernacular materials using craft skills, much influenced by Gandhi's view that ‘all the building materials should be found within five miles of the site’. For twenty years from 1964 he worked in Kerala, establishing the design language he used in all his later work, a prime example of Critical Regionalism. Although his designs draw on the elements of vernacular architecture, they are nonetheless recognizably modern in their forms and spaces. But for materials, he rarely used concrete or glass, and for mechanical services, he used small openings in the brickwork (brick jali) to provide sufficient light, shade, and ventilation.
From The Oxford Companion to Architecture in Oxford Reference.