Born in Sanaüja to Joan Margarit i Serradell, an architect from Barcelona, and Trinitat Consarnau i Sabaté, a teacher at l'Ametlla de Mar (Tarragona), he grew up at the time of the Spanish Civil War and the Second World War.

In 1954, they settled in the Canary Islands, but in 1956 Margarit returned to Barcelona to complete his architecture studies, lodging at the University hall of residence the Col·legi Major Sant Jordi.

From 1975, Margarit lived in Sant Just Desvern and from 1980, worked there as an architect with his friend and associate Carle Buxadé.

he was Professor of Structural Calculations at Technical School of Architecture, Barcelona, part of the Polytechnic University of Catalonia.

Recitations of Margarit's poems with musical backdrops have been recorded by the musicians Pere Rovira, Gerard Quintana, Araceli Aiguaviva and Miquel Poveda.