João Tiago Aguiar, arquitectos was commissioned to design the renovation and expansion of the FC & DSZ Belém Building, in the Portuguese capital, in an area close to the Belém Cultural Center and the Tagus River. The project creates two high-quality homes without separating the building from the urban fabric and respecting elements of its original structure.

The old building featured a commercial space on the ground floor and two apartments with limited natural light. The renovation increases the height, eliminates the commercial space, and modifies the interior divisions and façade openings, resulting in two triplex apartments with spacious interior spaces.

João Tiago Aguiar, arquitectos designed the two triplex apartments with independent entrances. The lower floor has three bedrooms with their own bathrooms; the upper floor has two bathrooms, one en suite to the master bedroom and the other for shared use. The upper floor is used as a social area, prioritizing natural light and views.

The materials chosen ensure the aesthetic coherence and longevity of the building. Wood, stone, and glass are used subtly, creating a delicate and welcoming interior space. The installation of zinc panels on the roof cladding and light-coloured MDF carpentry improve energy efficiency without compromising the project's aesthetics.

FC & DSZ Belém Building by João Tiago Aguiar, arquitectos. Photograph by Francisco Nogueira.

FC & DSZ Belém Building by João Tiago Aguiar, arquitectos. Photograph by Francisco Nogueira.

Project description by João Tiago Aguiar, arquitectos

The refurbishment and extension of this Lisbon building, situated near the Centro Cultural de Belém and the Tagus River, sought to balance contemporary interventions with the preservation of its historical urban fabric. Originally comprising a ground-floor commercial unit and two compact two-bedroom apartments above, the existing structure was characterized by constrained internal layouts and limited natural light. The design strategy responded to these spatial and environmental shortcomings while accommodating an ambitious program for two separate triplex residences.

A two-storey vertical extension was introduced, capitalizing on panoramic views towards the Tagus River and the 25th of April Bridge. This intervention was articulated through a zinc-clad roof, distinguishing the new addition while respecting the rhythm of the retained front façade. In contrast, the rear elevation embraced a more contemporary language, integrating pocket windows to enhance natural illumination and establish a fluid relationship between interior and exterior spaces.

FC & DSZ Belém Building by João Tiago Aguiar, arquitectos. Photograph by Francisco Nogueira
FC & DSZ Belém Building by João Tiago Aguiar, arquitectos. Photograph by Francisco Nogueira.

Internally, the reconfiguration prioritized spatial generosity and clarity, addressing the need for larger, more functional living areas. The new layout accommodates two distinct triplex dwellings: the lower triplex features three ensuite bedrooms, while the upper triplex includes two bedrooms sharing a bathroom alongside an ensuite bedroom. The uppermost level of the latter was dedicated to the social areas, optimizing light penetration and framing the expansive river views.

Materiality played a crucial role in reinforcing a sense of timelessness. A palette of wood, stone, and glass was employed throughout, ensuring durability and aesthetic coherence. Custom MDF joinery was specified in natural wood finishes or lacquered in white and light blue, contributing to a refined yet understated interior expression. The introduction of dual access points - through the shared entrance hall with a lift at the front and separate rear entrances - further reinforced the programmatic efficiency of the design.

More information

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Architects
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João Tiago Aguiar, arquitectos. Lead Architect.- João Tiago Aguiar.

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Project team
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Diogo Romão, Rúben Mateus, Nuno Sequeira, Giulia Giust, Rita Cardoso Lemos, Pedro Vieira, Paulo Jorge Dias, Élvio Gomes Pereira, João Carlos Fonseca, Ricardo Carvalho, Maria Sousa Otto, Ozora Kuzayama, Maria Reis, Francisco Barosa, Susana Luís, Samanta Cardoso de Menezes, Mariana Santos, Arianna Camozzi, Beatriz Fróis, Francisco Duarte, Constança Lino, Renata Vieira.

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Collaborators
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Engineering.- Engenharia 3.4.
Landscape.- Sofia Raimundo Landscape.

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Client
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Private.

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Builder
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BWA Group.

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Area
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335.60 sqm.

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Dates
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2024.

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Location
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Lisbon, Portugal.

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Manufacturers
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Paints.- CIN.
Sanitary equipment and taps.- PADIMAT.
Oak wood flooring.- U-DECK.
Metal works.- A. MOREIRA CADETE.
Carpentry.- FFWOOD.
Stonework.- MÁRMORES GONÇALVES.
Handmade tiles in "lozange shape 16x19".- VIÚVA LAMEGO.
Lighting.- BRICK IN THE WALL.
Aluminium windowframes.- CORTIZO.
Switchgear.- EFAPEL.
Elevator.- PINTO E CRUZ.

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Photography
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Joao Tiago Aguiar. Born in Lisbon – Portugal, in 1973.  Architecture Degree by Faculdade Arquitectura Universidade Técnica Lisboa in 1996.

Collaboration with van Sambeek & van Veen, Amsterdam, Holland, between years 1997 and 2000 and with Broadway Malyan, Portugal, from 2000 until 2004. In 2004 establishes the architecture firm in partnership. In 2008,  proceeds individually under the name João Tiago Aguiar, arquitectos.

The office, located in the city centre of Lisbon, is mainly focused in the discipline of Architecture, counting already with a large number of built and ongoing projects. Designing furniture and lighting are also part of the design process of the office.

Various projects have been published in different national and international architecture magazines, architecture websites and books.
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Published on: April 4, 2025
Cite: "Renovation and update. FC & DSZ Belém Building by João Tiago Aguiar, arquitectos" METALOCUS. Accessed
<http://www.metalocus.es/en/news/renovation-and-update-fc-dsz-belem-building-joao-tiago-aguiar-arquitectos> ISSN 1139-6415
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