This architecture office based in Lisbon was created by Francisco Serras and Sofia Machado Santos in September 2006 as result of a partnership with OAB – Office Architecture Barcelona to develop a House in Cascais, as well as a 1st Prize at the International Competition of Santa Marinella’s Town Hall, in Italy.

We are a Multidisciplinary Creative Platform that develops projects for Housing, Urban Equipment, Urbanism, Real Estate management and investment consulting. As part of our activity we also develop cultural projects regarding architecture and fine arts.

Since 2006, our team has been developing projects for Portugal, Angola and Guinea-Bissau, and has entered in international competitions in Spain, Italy and Finland.

Thinking geometry as a mathematical organization of space, we develop our projects based on investigation and research of natural structures, in order to achieve the best economical and sustainable results. To respond effectively, in each project we establish partnerships with experts from different areas of expertise.

Our team

  • Francisco Serras
  • Sofia Machado Santos


GA S2 Arquitectos Associados Lda.

Rua Rodrigo da Fonseca, nº 9, 3º C

1250-189 Lisbon, Portugal

Phone: + 351 919172458 / + 351 964013224

Email: smachado@ga-s2.com / fserras@ga-s2.com