The building was constructed in the second half of the 19th century, in different phases of construction, and followed a neoclassicist style. Around 1905-1906, Francesc Berenguer i Mestres – a regular collaborator of Miquel Pascual and the town's municipal architect – made an initial modification to the building, increasing its height and giving it a new façade to replace the old, neo-classicist façade.
Francesc Berenguer i Mestres began his architectural studies but never finished them, which is why his projects had to be signed by other architects. He worked with Antoni Gaudí, of whom he was a friend.
Berenguer i Mestres drew from the mixture of the modernist trends of the time and created his own style, the result of his meticulous attention to detail. The Gràcia City Hall building is part of the architectural conception with a façade of flat, symmetrical composition and a simple volumetric approach. It recovers materials from popular Catalan architecture such as brick, wrought iron and stone, but also uses masonry combined with brick or stone to define the corners. The sophistication of the wrought-iron designs with axial bends, lacerations and serpentine forms are masterly, as can be seen in some of the decorative elements of the ensemble, such as the coat of arms on the façade.
Originally, the continuous balcony on the main floor had a stone railing that was replaced by the iron railing that is still preserved today.
According to the plaque above one of the doors, the hall on the first floor, now the assembly hall, was built in 1882. Another plaque recalls its past, specifically in 1967 when it was called ‘Sala Nuestra Señora de Gracia’.
