H.P. Oser was a Austrian emigre architect who registered as a NSW architect in 1945. He later formed a partnership with another emigre Jean Fombertaux in 1960, having begun an associateship with him in 1956. Oser was very active in interior design creating showrooms (Gibb and Beeman), theatre interiors (Odeon, Singapore), suburban hotel interiors (Brookvale) and other works.