Casa PR21, designed by Alventosa Morell + Pàmies Arquitectura, rises on a narrow plot with sea views in Badalona. The four-level home articulates spaces with natural light and sober materials.
Casa PR21, located on a narrow plot between party walls facing the sea in Badalona, has been designed by the studios Alventosa Morell and Pàmies Arquitectura. The home, intended for a family of three, is organised over four floors and an accessible terrace, where the structure, light, and voids define the interior experience.
The project is based on a structural system that dictates the layout. On the ground floor, a series of concrete porticos creates an open space that supports the upper levels, built with load-bearing brick walls. This transition between point and load-bearing structure organises the environments and creates a succession of areas separated by planes that filter light and frame the views.
The ground floor functions as a pass-through space connecting the two streets that delimit the plot. An access point serves the garage, while a large wooden gate facing the promenade opens the home directly to the coastal front. The double height of this foyer receives zenithal light from the upper floor and illuminates the spiral staircase that articulates the vertical journey.
The first floor concentrates the shared use spaces. The kitchen, made of wood and stainless steel, extends along the party wall, transforming the corridor into an active domestic space. At the end of the corridor, the dining room opens completely to the patio through folding doors, extending daily life outdoors.
The second floor houses the living room, a guest bedroom, and a bathroom. Between these two spaces, a double-height entrance hall illuminated from above by skylights connects the two sections of the staircase. The rooms, located at the ends, open to the exterior with large windows.
The third floor contains the main bedrooms, connected by a walkway that overlooks the double height. A greater free height gives these rooms a more generous and luminous spatiality. Above them, the accessible terrace incorporates an outdoor shower and offers wide views of the sea.
The materiality of the project is characterised by a sober palette, with predominance of white surfaces and materials of honest appearance. The white-painted brick walls amplify natural lighting by reflecting light between the different rooms. This combination allows natural light to traverse the home from facade to facade, becoming the main element that articulates the sequence of spaces.
The bioclimatic strategy of the house is based on thermal comfort studies conducted by the Societat Orgànica. Thermal inertia has been increased through the ceramic of the walls, and constant air circulation has been favoured to reduce cooling costs in summer. The hot air rises through the double-height spaces, contributing to energy efficiency.
Casa PR21 presents itself as an example of how architecture can integrate light, structure, and materiality to create a home that dialogues with its maritime environment in Badalona.
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