Iris Dullin-Grund was born in 1933 in Berlin and later was trained as an architect at the Kunsthochschule Berlin-Weißensee from 1952 to 1957. After finishing her studies, Dullin-Grund worked for Hermann Henselmann in Berlin and Ernst May in Hamburg. At the beginning of the 1960s she returned to the GDR and pursued her career in Neubrandenburg, as ‘Abteilungsleiterin VEB Hochbauprojektierung Neubrandenburg’ (head of the department of building construction Neubrandenburg). During this time she completed her first and most famous work, the Neubrandenburger ‚Haus der Kultur und Bildung’ (house for culture and education), which was built from 1963 to 1965. Following that, from 1965 to 1967 the taught interior designs at the Technical University of Dresden. In 1968, she became a member of the ‚Deutsche Bauakademie in Ostberlin’ (German Building Academy in East Berlin), from where she also received her doctoral degree in 1969/1970. From 1970 to 1990 she was the ‘Stadtarchitekt’ (leading urban planner) in Neubrandenburg – a position reached by only three women in the GDR (the others are Helga Hüller in Greifswald and Sabine Rohleder in Zwickau).

Iris Dullin-Grund and her work was portrait in several architectural magazines, not only in East but also West Germany at the time. She also received several architectural awards in the GDR. After the German reunification, she worked as a freelance architect in Berlin.