The building was constructed on the site of a 17th century house that was demolished by order of Blanca Mitjà. It was located at the foot of the royal road, in the historic centre of La Garriga, opposite the Santa Isabel square and the site that had been occupied by the Hospital de Banys until 1881.
It is a civil building built between partitions and on a corner, with a façade on two streets. It consists of a ground floor and two floors originally intended for summer residences. The façades are flat and have a classical layout. They are structured on the basis of vertical axes of openings; five on the main façade and seven on the side. Horizontally, the forging lines are emphasised with a solid railing on the first floor and prominent cornices on the second floor and also on the top.
The two façades are covered with sgraffito work: the ground floor and the corner are covered with a broken ashlar stucco. The rest have various motifs such as baluster railings, lintel pediments, vases, geometric elements, pilasters and floral elements. Of particular note is the representation of four female figures representing the four seasons.
This building is representative of Duran i Reynals' architecture – it represents a conscious return to Renaissance language due to the imposition of rationalist trends.
The Mitjà House was built in 1942. In 1987, the interior was completely refurbished and the openings on the ground floor were modified, although the sgraffito work was preserved and restored.
