The present Final Degree Project aims to rehabilitate a single-family building between party walls, by performing a basic and executive project that includes fixing the damage and improving its image without changing the use to which it was intended. In order to carry out this project, the guidelines learned in the DAC rehabilitation will be followed. First, we will proceed with the drawing of plans to make a diagnosis of the building, in order to detect the existing damages and to be able to find constructive solutions to solve these problems. Subsequently, the plans of a basic and executive project will be simulated trying to get as close as possible to reality. Subsequently, the plans of a basic and executive project will be simulated trying to get as close as possible to reality. Finally, a report detailing the entire process will be made and followed in the realization of the plans, including the regulations applied and the process executed. To achieve a project with such objectives, the work will be divided into the following phases: Introduction: This section will explain the choice of topic and the objectives to be achieved, explaining in a general form the procedure executed in the project. Definition of the building: we will locate and define the house and explain its history. Diagnosis of the current state: a survey/drawing of plans will be executed and the different damages of the dwelling will be recognized by creating diagnosis sheets to choose the best solution to the problem. Improvement proposal: an improvement of the building will be made taking into account the study of the different damages and their origin. Regulation: the regulations to be complied with in the project will be explained. Plans: Basic and executive plans will be made in Autocad, which includes: current status, demolitions, pathologies, current details, final status, facilities, structure and final details. Conclusions: The conclusions obtained in the project will be provided and the objectives fulfilled will be explained. Bibliography: all the information consulted during the project will be provided. Annexes: In this section there is all the complementary information to justify the previous sections. The purpose of this project is to put into practice the knowledge acquired throughout my education in the degree with a real project and at the same time obtain a learning for a professional future.