Domènech carried out a number of renovation projects for his political colleagues.
Francesc Macià, a military engineer and politician who became president of the Generalitat, commissioned him to renovate the interior of his house in Lleida, the Macià chalet.
It is the last work Domènech carried out in Canet de Mar. As was the case with most of his works of this period, he had the collaboration of his son Pedro and his son-in-law Francesc Guàrdia. The Domènech family had their second residence in Canet de Mar, in the old Rocosa country house. This building did not have enough space to house the architect's large family and his studio. In 1877, they bought two houses on the corner of Riera Gavarra and Riera de Buscarons, which were connected to the house by the rear courtyards. Masia Rocosa became the architect's office and workshop and the new building the family residence. A first unrealised project is preserved at the Fons Cabruja in Canet de Mar.
In 1918, a building permit was requested for the renovation and restoration of the Domènech house of the project that was finally carried out.
The original building, on a corner at the confluence of the two streams, was two small 17th-century buildings. The previous constructions were not demolished, but a large part of the walls were reused.
Domènech went up again and redistributed and ennobled all the openings, adding a hall with exposed brick arches at the top and monumentalising the chamfered corner with a tribune decorated with floral and zoomorphic elements.
Inside the house, all the rooms were renovated, ensuring that all the rooms had windows on the outside. A staircase with ceramic risers connects the ground floor with the first floor, leading to a double-height entrance hall.
On the floor of this space is a walk-through skylight that brings light from the upper skylight to the ground floor. A spiral staircase connects this space with the perimeter balcony on the first floor.
Several rooms in the building contain the plaster casts of some of the sculptural works in its buildings.
In 1980, it was renovated to house a bank and an extension was built in the garden. After the transfer of all the buildings to the Town Council and a second refurbishment in 2011, it is now a facility that houses the Domènech i Montaner House-Museum in Canet de Mar.

The building belongs to the architect Lluís Domenèch i Montaner, who built it in 1918-1919 with the collaboration of his son Pere and his son-in-law Francesc Guàrdia.
On the façade there is a staircase leading to the building and a tribune on the first floor. Inside, we find elements of interest such as the two chimneys, glass tiles, carpentry work and the double space at first floor level.
The house has an irregular trapezoid floor plan with the main façade located right on the chamfer. This is characterised by a tribune with lobed arches and a plain tympanum gable, framed with bricks. The side façades have crown windows in the Gothic tradition on one and balconies with stone railings on the other. It is made of exposed brick, with ceramic details: the entire upper floor is crowned with a moulded cornice. It currently houses the Domènech i Montaner Museum.