In 1984, architects Pedro Gabriel S. de Castro and Arq Marcelo B. de Lacerda decided to set up the CASTRO & LACERDA ARQUITETOS studio, where the two worked together for nearly two years. This initial partnership gave rise to the studio's first residential building, christened Ana Terra and located in the southern Brazilian city of Porto Alegre.
In 1986, already working on his own, Architect Pedro Gabriel founded PEDRO GABRIEL ARQUITETOS ASSOCIADOS.
Focused primarily on the corporate and real estate markets, Pedro Gabriel Arquitetos Associados conducted several projects within these sectors. The output for this period includes the Mercedes-Benz/Savarauto dealership and the Sheraton Hotel, both located in Porto Alegre, Brazil, as well as the Arte del' Acqua housing complex, in the city of Florianópolis, Brazil. During this period, the studio received nine awards from Brazilian architecture prizes, all held in São Paulo.
In 2012, consolidating a partnership of many years with architect Marcelo Correa Bonini, PEDRO GABRIEL & BONINI ARQUITETURA - PGBA was created, as the successor of Pedro Gabriel Arquitetos Associados in the market. This new partnership is in charge of the first housing development in the Brazilian city of Manaus, state of Amazonas, under the name Recife-Objetivo.