Site Size: 840 square feet Project Size: 4,000 square feet Program: The clients desired a live-work space for their five-story, single-family townhouse in Hanoi, Vietnam. Each floor has a specific function: the ground level is for parking, the second level is an office, the third level has living and dining areas, and the fourth and fifth floors are devoted to bedrooms. To maximize privacy, the office has a separate entrance and staircase. Solution: The building, made of cast-in-place reinforced concrete, is edged with recessed terraces clad in operable wood screens for privacy and added security. Behind the screens, operable glass