Stone building, almost triangular in plan and three stories high. It has a central body covered by a hip roof. On both sides of this central body there are two lateral bodies that advance on the north and south façades. On the first floor, all three bodies are connected by a balcony, also made of stone. The finishes have wavy shapes that recall Gaudí's style. At the back of the house there is a garden, enclosed by a modernist gate with wrought iron bars bearing the name of the building.

It was built in 1914 by who was the municipal architect then: Salvador Valeri i Pupurull.

Stone building, almost triangular in plan and three stories high. It has a central body covered with gables, on the upper floor of which is the moulded lace of an ancient shield or ornament that has now disappeared, but its trace has survived. On either side of this central body there are two lateral bodies that advance on the north and south façades.
On the first floor, all three bodies are connected by a balcony, also made of stone. The finishes are developed in wavy shapes reminiscent of Gaudí's style. At the back of the house there is a garden, closed by a modernist gate with iron bars on which the name of the building is written. It is the result of an interesting work of forging, largely done by a blacksmith of the town.

Construction made with stone extracted from Les Escletxes, before there was a quarry (1952-60) installed by the cement industry (Faura, 1996: 140).
In 1918, the heirs of Miquel Bou present an instance to the town hall, where they declare themselves the owners of the properties called Casa Peró, Casa Figueres and Casa Bial, located on Carrer del Ferrocarris, and ask for permission to search for them and for them to be given the remaining plot of public union of the dead-end alley that leads to two of these estates. In return, they lend land to the town hall to give the street a constant width of 6 metres. The city council accepts the works in exchange for the payment of the established rates (Ahicart et al., 2019).
The designer of the building was Salvador Valeri i Pupurull (Barcelona, 1873-1954), an architect who is part of the second generation of Catalan modernist architects, with relevant works such as Casa Comalat (Barcelona).
Valeri i Pupurull is considered the most characteristic author of the municipal area of Papiol, with an important footprint in the Baix Llobregat: Can Trian, Casa Gensana and Fàbrica Prats (Sant Vicenç dels Horts), the Casino de Sant Andreu de la Barca, wineries in Sant Esteve Sesrovires, etc.

The architect Salvador Valeri Pupurull (Barcelona, 1873-1954) was the son of Joan Valeri i Anglà, a builder originally from Oristà, in Osona. He graduated from the Barcelona School of Architecture in 1899. He is from the second generation of modernist architects. His works are characterised by the use of wavy pediments, ornaments of floral derivation and modelling of materials in forms of free composition, as well as by great exuberance.
In the early 1920s, the Papiol blacksmith forged the railings, with the exception of the door which was commissioned from an outside blacksmith (Faura, 1996: 180).
Casa de Pedra was one of the stops on the route of the Corpus Christi procession (Faura: 1996, 266).

It is one of the most unique buildings in the municipality, which can be seen on the southern side of the town and rises up dominating the Llobregat valley, while the main access to the house opens on Carrer de l'Abat Escarré, thus avoiding the great unevenness of the plot on which the building was built. Primitivism of materials, organic forms and undulations in voids and other ornamental elements dominate the composition of the building, which tries to combine with the geology of the population, and which is in line with the building of the castle that is dominant above this house.