A devotee of the modernist style of architecture, Howard counted Ludwig Mies van der Rohe and Le Corbusier among his influences, and later became friends with Sydney architect of the modernist style, Harry Seidler.
Howard was influenced by the modernist architectural styles of Ludwig Mies van der Rohe and Le Corbusier, and later became friends with Harry Seidler, an architect who shared his admiration for modernism.