San Modesto House is a flexible 135-square-meter residential model for narrow urban lots. The single-level plan is organized along a linear courtyard and reflecting pool, bringing daylight, cross-ventilation, vegetation, and long views deep into the home. Multiple façade options—perforated screens, stone walls, and smooth stucco planes—allow the same efficient interior layout to adapt to different streets and orientations. Warm local materials, minimized circulation, shaded outdoor living, and provisions for solar and rainwater systems make the compact house feel generous, calm, and practical.