Housing a multi-generational family under one roof requires spatial planning that balances privacy with connection, durability with comfort, and density with livability. The 37FC-House by ONG&ONG in Singapore demonstrates how a four-story home with attic and basement can accommodate an extended family across a compact urban site. The project sits on land that once held a semi-detached house and maximizes plot boundaries to create 539 square meters of gross floor area on a 601 square meter site. The combination of textured concrete, generous teak wood accents, and retractable glass walls creates a home that serves multiple generations without compromise. The modern barnhouse vision offers an instructive contrast in how different residential typologies address family living at very different scales and contexts.
Vertical Living: Designing Multi-Story Homes for Extended Families
When horizontal space is limited, architects build upward. Multi-generational homes benefit from vertical zoning that allocates each floor to specific age groups or functions. The 37FC-House organizes its program across ground floor, second floor, basement, and attic levels, each serving a distinct purpose within the family ecosystem.
Floor-by-Floor Family Zoning
The ground floor houses public functions: driveway, service areas, kitchen, and the main living room. Polished concrete floors flow seamlessly from the interior to the rear garden and lap pool. The second floor, approximately 1.5 times larger than the ground volume, contains bedrooms including the master suite with walk-in wardrobe and expansive bathroom, plus two junior suites overlooking the backyard. The basement provides additional program space, and the attic offers flexible accommodation for family members who need separation from the main living areas. Selecting the right window systems for residential projects becomes critical when planning vertical homes where each floor has different orientation, privacy requirements, and solar exposure.
Circulation Core Design
The vertical circulation core is the spine of any multi-story family home. A black steel sculptured staircase joins all four floors of the 37FC-House, serving as both functional connector and architectural statement. Key considerations for stair design in multi-generational homes include:
- Tread depth and riser height compliant with local building codes for safe daily use
- Handrail design that accommodates both children and older adults
- Natural light access at stair landings to reduce reliance on artificial lighting during daytime
- Integration of stair storage for seasonal items that are accessed infrequently
| Floor Level | Primary Function | Key Design Feature | Occupancy |
|---|---|---|---|
| Basement | Flexible program/storage | Stair access, service integration | Occasional |
| Ground | Living, kitchen, dining | Retractable glass, pool outlook | Daily shared use |
| Second | Bedrooms, master suite | Chamfer-cut openings for views | Private sleeping |
| Attic | Flexible accommodation | Upper-level retreat | Family members seeking separation |
Material Strategies for Multi-Generational Durability
Homes serving multiple age groups experience diverse usage patterns. Children play on floors, adults entertain in living spaces, and older family members need surfaces that are slip-resistant and easy to maintain. Material selection must balance durability with comfort across all these scenarios.
Textured Concrete as a Primary Material
The 37FC-House uses textured fair-faced concrete for its primary structure and finishes. This material offers exceptional durability for high-traffic family living. It requires no painting or cladding, reducing ongoing maintenance costs. The thermal mass of concrete helps moderate indoor temperatures, a benefit for families with young children and older adults who are more sensitive to temperature swings. The Passive House Network and its educational resources provide guidance on how thermal mass, insulation, and air sealing work together to create homes that maintain comfortable temperatures with minimal mechanical input.
Teak Wood for Warmth and Longevity
Teak is used generously throughout the 37FC-House, beginning at the entrance where strips neatly conceal service areas and storage. Teak brings warmth that balances the coolness of polished concrete and glass. Its natural oils make it resistant to moisture, insects, and decay, making it suitable for tropical climates and high-use areas. Teak also ages gracefully, developing a silver-gray patina over time that adds character without requiring refinishing.
| Material | Durability | Maintenance | Multi-Generation Fit | Climate Suitability |
|---|---|---|---|---|
| Fair-faced concrete | Very high | Low, no painting needed | Excellent for high-traffic areas | All climates |
| Polished concrete floor | High | Low, periodic resealing | Good, add rugs for slip resistance | Mild to tropical |
| Teak joinery and screens | Very high | Low, natural oils protect | Excellent for handrails, trim | Tropical preferred |
| Granite tile paving | Very high | Low | Good for wet areas, entry | All climates |
| Sukabumi tile (pool) | High | Low | Pool surrounds only | Tropical, warm |
Indoor-Outdoor Integration Across Multiple Levels
Multi-generational homes benefit from strong connections to outdoor space at every level. The 37FC-House achieves this through retractable floor-to-ceiling glass windows on the ground floor and green spaces placed on each floor at both the front and rear of the home.
Retractable Glass for Flexible Indoor-Outdoor Living
Floor-to-ceiling retractable glass panels allow the ground floor living room to open fully to the garden and pool area. This dissolves the boundary between interior and exterior, creating a combined space that functions for family gatherings, children’s play, and adult entertaining. The pool also acts as a buffer against the highway running directly behind the property, serving both recreational and acoustic functions. Showcase homes like the This Old House Idea House demonstrate how indoor-outdoor transitions in display homes translate into practical real-world design decisions for family living.
Green Spaces at Every Floor Level
Greenery is a theme well incorporated into the 37FC-House, with planted areas on each floor at both the front and rear. This creates visual and physical access to nature regardless of which floor a family member occupies. Benefits of distributed green spaces in multi-story homes include:
- Visual relief from urban surroundings on upper floors
- Improved air quality through plant filtration at each level
- Thermal buffering of facades through green wall systems
- Private outdoor access for family members who cannot easily use stairs to reach ground level
Passive Design Strategies for Family Homes
Large family homes consume significant energy for cooling, heating, and lighting. Passive design strategies reduce this load while improving comfort for all age groups.
Building Orientation and Fenestration
The 37FC-House uses glass paneling along the length of the ground floor to maximize natural light while managing heat gain through strategic orientation and shading. The chamfer-cut edges on the second floor volume open up views to both the street and garden, capturing daylight from multiple orientations. These design moves reduce the need for artificial lighting during daytime hours. Lessons from Passive House design and construction show how rigorous envelope standards can be adapted for family homes to dramatically reduce energy consumption while maintaining superior comfort.
Natural Ventilation Through Stack Effect
Multi-story homes can leverage the stack effect for natural ventilation. Warm air rises and exits through upper-level openings while cooler air is drawn in at ground level. The black steel staircase in the 37FC-House functions as a vertical shaft that supports this airflow. For the stack effect to work effectively, the home needs:
- Low-level inlets on cooler shaded facades
- High-level outlets at stair top or attic ridge
- Unobstructed vertical path through the building section
- Operable windows on at least two facades per floor for cross-ventilation
Space Planning for Privacy and Shared Living
The central challenge of multi-generational housing is balancing each family member’s need for privacy with the shared spaces that define family life. The 37FC-House addresses this through clear floor-by-floor separation while maintaining visual and physical connections through the staircase and double-height volumes.
Creating Private Zones Within a Shared Home
Each generation benefits from dedicated spaces. The master bedroom suite occupies the second floor with its own bathroom and walk-in wardrobe, creating a parent retreat. Junior suites on the same floor serve children with their own domain. The attic provides flexible space that can be adapted for older children, live-in help, or elderly family members who need ground-level access. The basement offers recreational or storage space that does not compete with daily living areas. The Passive House remodeling experience demonstrates how energy retrofits can improve comfort and health outcomes for all occupants of a family home.
Long-Term Value Through Adaptable Design
A well-designed multi-generational home adapts as the family changes. Children grow and leave, elderly parents may move in, and adult children may return with families of their own. The 37FC-House anticipates these transitions through generous floor plates, flexible room configurations, and robust construction that withstands decades of use.
Future-Proofing Through Material and Spatial Choices
Concrete and teak construction requires minimal ongoing maintenance and can handle changes in occupancy without major renovation. The vertical layout allows floors to be used independently as family needs shift. A basement that once served as recreation space can become a separate apartment. An attic retreat can become a home office or additional bedroom. The long-term durability and low embodied carbon of concrete construction aligns with broader sustainability goals. The ultra-low-carbon housing lessons from Vancouver offer strategies for reducing the environmental impact of residential construction while maintaining the quality and durability that multi-generational homes require.