Located on a south-facing hillside above Unterinn am Ritten in Northern Italy, this late-1970s house is undergoing a carefully positioned expansion that takes advantage of remaining permitted volume beneath the existing structure. Embedded into the slope and set against a retaining wall, the single-storey extension follows the natural topography while opening toward panoramic views of the Dolomites. Connected to the original house below grade, the new volume maintains privacy through calibrated circulation and level changes. A centrally arranged living space with integrated kitchen is flanked by bedrooms and bathrooms, all oriented to the south and southeast. A cantilevered ceiling moderates solar gain in summer, while floor-to-ceiling glazing dissolves the boundary between interior and terrace. Exposed concrete, natural stone and glass define the exterior, while chestnut, oak and textured plaster introduce warmth within a restrained material palette.