Born in 1943, he studied interior design in Darmstadt.
From 1967 to 1970 he worked in several furniture stores and was product manager at DeWe Deutsche Werkstätten in Stuttgart for another three years. He then headed the planning team of the WK Association for four years.
From 1977 to 1988 Siegfried Bensinger was chief interior designer at the magazine "Schöner Wohnen", but at the same time he designed furniture for well-known manufacturers. Since 1988 he has his own studio in Buchholz, Nordheide.