Robert N. Allsopp was born in April 1937 in Leicester, England.

He is a landscape architect, urban planner, and architect. He studied architecture at the Leicester College of Art and Technology. He became a registered architect in 1961 and completed his first major architectural commission in 1963. He then pursued graduate studies in Civic Design at the University of Edinburgh, Scotland, followed by two years as a Visiting Lecturer in Architecture at the University of Kansas, USA, under the auspices of the Fulbright Scholarship Program. Returning to London, UK, he worked as an Architect/Planner on planning a New Town and major urban regeneration projects in London and Cardiff. Allsopp moved to Canada in 1968 to take up the position of Director of Campus Planning at the University of Manitoba and subsequently became involved (with Alex Rattray) in establishing the graduate Landscape Architecture Program there. In 1979, he joined Roger duToit Architects/du Toit Associates in Toronto and began teaching in the Department of Landscape Architecture, University of Toronto. The partnership, du Toit Allsopp Hillier, was formed in 1985, and it continues as DTAH, a much-expanded, multi-dimensional design practice. His best-known work is in campus planning, urban neighbourhoods, and a wide range of projects in Canada’s National Capital, recognized nationally and internationally. He is a Fellow of the Canadian Society of Landscape Architects (CSLA) and a member of The Royal Institute of British Architects (RIBA) and the Canadian Institute of Planners (CIP). He is the recipient of the RIBA’s Soane Medallion, a Fulbright Scholarship, a Canada Council ‘Residency in Barcelona’ Award, the OALA’s Pinnacle Award and the CSLA’s Lifetime Achievement Award. In 2023, he established the Robert N. Allsopp Urban Design Fellowship with the Landscape Architecture Canada Foundation (LACF).