Located in Porto, between the Atlantic Ocean and the City Park, Boavista Housing 5205 occupies a site where the urban grid loosens toward the coast. Designed by A43, the multi-residential volume uses pronounced horizontal planes and vertical structural elements to mediate between the city, the park, and the sea. Comprising eight duplex apartments, the development addresses density through typological hybridisation: instead of standard shared-access corridors, each unit has independent vertical circulation cores and private entrances, offering the spatial autonomy of single-family residences.
Each four-bedroom residence is organised across two levels, establishing a functional hierarchy that separates communal living areas on the lower floor from private retreat areas above. Internal lightwell courtyards channel natural illumination and stack-effect ventilation into the suites, while upper-level units extend onto private rooftop terraces and gardens featuring individual pools. Along the exterior, wooden shutters and integrated planter balconies serve as a physical buffer to the coastal climate.
Materials and Construction
The architectural palette relies on durable, low-maintenance finishes, including wooden flooring, marble cladding in wet areas, lacquered joinery, and minimalist aluminium frames.
The building envelope utilises a ventilated façade constructed with recycled aluminium panels carrying a low embodied carbon profile. The ventilated assembly optimises thermal performance, significantly reducing heating and cooling demand.
The project relies on passive design strategies to maintain indoor environmental quality. Solar orientation stabilises interior temperatures, while the section-driven layout promotes natural cross-ventilation across both levels of each unit. Active energy- and resource-conservation measures complement these passive strategies through an integrated hydronic underfloor heating system paired with mechanical ventilation.
