Located in Bien Hoa, Dong Nai, Fumu House renovates an existing 7.3 × 28 m house that had been gradually extended over time, resulting in a long, deep layout of small rooms with limited daylight and ventilation.

Rather than replacing the existing structure, Ruanli.architects chose to work with its original footprint and reorganize the house around three interconnected layers: spiritual space, shared living space, and private space. The spatial arrangement draws inspiration from the traditional Northern Vietnamese three-bay house, reinterpreted for contemporary multigenerational living.

At the center of the house, the ancestral altar room connects directly to a generous veranda, forming a shared threshold between the interior and exterior. The living room, kitchen, and dining area are arranged as an open sequence, allowing everyday activities to overlap while maintaining clear circulation.

Private rooms are positioned toward quieter parts of the house and separated from communal areas through corridors, courtyards, and vertical voids. High-level windows provide daylight and ventilation while maintaining privacy and safety for the children's bedrooms.

Climate-responsive strategies are integrated throughout the renovation. Skylights, double-height voids, ventilation bricks, and layered verandas work together to bring natural light deep into the house and encourage vertical air movement in Dong Nai's hot and humid climate.

The renewed façade introduces a contemporary interpretation of the traditional Vietnamese tiled roof, with overlapping red-tile volumes defining the character of the house.

Fumu House transforms an enclosed and fragmented dwelling into a connected living environment. More than simply adding space, the renovation seeks to create opportunities for different generations to live together while remaining connected, flexible, and comfortable.