Isolated house preceded by a garden. The building is made up of different cubic structures. The main one with a quadrangular base has a ground floor and two upper floors, with a tiled, hip roof. The central axis of symmetry orders the composition of the façade, with the second floor featuring a solution of tripartite windows in a rounded point in the style of the attic galleries of rural architecture, of Noucentista affiliation. A tower-like structure is attached to one of the sides, with a structure similar to that of the main body.

The tower of Francesc Serra is a large detached single-family house with an almost rectangular ground plan and a hipped roof. It is structured in height on the ground floor and two floors and it is surrounded by a garden area, although only three façades are visible, due to the presence of other buildings behind it. On the ground floor, a small staircase leads to the main door. This is flanked by two windows. The three openings are decorated around the perimeter with a heavier decoration on the lintel. Between each opening there are pairs of corbels that support the balcony on the upper floor. The balcony is curvilinear in shape and is enclosed by a wrought-iron railing. The access doors are the same as those on the ground floor, but have an upper cornice in the form of a drip supported on corbels. On the first floor, two groups of three semicircular arched windows are located towards the ends of the façade, each of them unified by the sill shared by the three windows. The north façade has a large terrace at the height of the first floor which, supported by pilasters, forms a porch on the ground floor. The access doors to the terrace are identical to those on the main façade that allow access to the balcony. Above them there is a gallery of semicircular arched windows, also with a single sill for each group of three windows. The slopes of the roof create an eave topped by a series of rounded and denticulated mouldings.
At the back of the house there is a hipped roof that creates a body that is distinct from the volume of the house. It has quadrangular windows on the first floor and semicircular arched windows in the body that protrudes from the height of the house.

This house is the work of Nicolau M. Rubió i Tudurí, who was an architect, town planner, gardener, playwright, novelist and literary critic. In Sant Feliu, he developed a series of architectural projects between 1922 and 1934, most of them located in the area of the 1902 expansion (Carrer de Sant Llorenç, Joan Maragall, Torras i Bages, Passeig de Navidad, Carrer de les Neus, Rambla de la Marquesa de Castellbell, Carrer de Montseny and Carrer de Sant Jaume, Passeig del Comte de Vilardaga and Passatge de Fargas).