Introduction This descriptive and justifying memorandum refers to the licensing process for the reconstruction and expansion of a building intended for housing, Local Accommodation, and commerce/services. located in the municipality of Faro.Location  in the parish of Sé e São Pedro. The building is surrounded by residential constructions and served by the necessary basic infrastructure for occupation, including the public road network and public utilities such as water, sewage, electricity, and telecommunications.Preexistence Existing on the property is a building intended for housing and commerce, consisting of a three-story building with a commercial space on the ground floor, a common courtyard, and a 3-bedroom dwelling distributed over the 1st and 2nd floors. The building is currently in a deteriorated state, preventing commercial or residential occupancy.Proposal The presented proposal aims at regenerating and expanding an old urban building located in the structural mesh of Faro's downtown, intending to be a reference point for the rehabilitation of city constructions. The regeneration process proposes the restitution of the original morphology of the building, with a focus on the reconstruction of the main façade to align with the building's identity. As the building originated from a time when structures were segmented based on spatial hierarchy, the intervention aims to restore this original structure.The rehabilitation will feature a ground floor commercial space for rent, two T0 apartments on the 1st floor for local accommodation, and a T1 apartment on the 2nd floor for the owners' residence. Once the licensing process is completed, the establishment of horizontal property will be proposed, with each floor becoming an independent fraction:Ground Floor - Commercial/Service Spaces – Fraction A1st Floor – 2 T0 apartments for local accommodation – Fraction B2nd Floor – T1 apartment for residence – Fraction CThe intervention seeks to adjust the building to current comfort requirements, necessitating changes to the interior layout to accommodate the proposed functions.On the ground floor, the existing setback of the shop front will be removed and replaced with a new shop front aligned with the rest of the façade, integrating the commercial space into the original identity of the building. The shop will be reconstructed to allow the integration of an office and sanitary facilities with occupiable areas. Additionally, a new staircase and corridor parallel to the commercial space will be created to provide common access to the courtyard for the occupants of the entire building.On the first floor, two spaces for local accommodation will be implemented, featuring T0 typology, allowing temporary occupancy by tourists in a cozy and comfortable space. The layout aims to maintain the existing staircase while maximizing spatial perception and optimizing the use of natural light. The formation of two open-space temporary occupancy areas allows occupants to enjoy essential amenities, integrating them into the true identity of this centuries-old building. In terms of interior spatial definition, there is a need to expand the built space to the rear terrace to integrate a new sanitary installation while maintaining the staircase access to the courtyard. Therefore, the external staircase from the 1st floor to the 2nd floor will be eliminated, requiring the creation of a new access in line with the existing interior staircase. With this solution eliminating the exterior terrace that the rear local accommodation would benefit from, it is proposed to create a balcony structured in wood, accessed by opening a new opening that visually extends to the common room of the rear apartment.On the second floor, the residential apartment for the property owners will be implemented. Based on the spatial distribution of the pre-existing built spa