CURVED ATRIUM HOUSE @ BUKIT TIMAH
Architecture + Interiors
4 800 sqft, Semi-detached bungalow
Completed Curved Atrium House
A contemporary semi-detached bungalow organised around a two-storey curved atrium that enhances daylight, ventilation and spatial connectivity throughout the residence.
MU Architects was commissioned to transform a semi-detached bungalow in Bukit Timah through the introduction of a distinctive curved atrium that redefines the spatial organisation of the house. Rather than treating the residence as a series of enclosed rooms, the design establishes a central architectural void that becomes the primary organising element of the home.
Inserted between the main building volume and the party wall, the two-storey-high atrium introduces natural light, ventilation and spatial openness into the deep plan of the residence. The curved geometry softens the linear nature of the existing structure, creating a more dynamic and fluid relationship between interior spaces while enhancing the quality of everyday living.
Beyond its environmental performance, the atrium serves as a visual and social connector that strengthens relationships between different levels of the house. Views, daylight and airflow are allowed to penetrate deep into the interior, creating a sense of continuity and openness while maintaining privacy from neighbouring properties.
The architectural language of the residence is expressed through clean geometric forms, carefully proportioned openings and a restrained material palette. Together with the central atrium, these elements establish a contemporary residential environment that balances spatial generosity, climatic responsiveness and family living within the constraints of a compact urban site.
SPATIAL ORGANISATION & ATRIUM PLANNING
The planning strategy is centred around the insertion of a double-volume curved atrium that becomes the primary organising element of the residence. Positioned between the main building volume and the party wall, the atrium introduces daylight, natural ventilation and spatial openness into the deep linear floor plan while creating a visual anchor that connects all levels of the house.
Rather than treating each floor as a series of independent rooms, the design establishes a continuous spatial relationship between communal and private zones. Living, dining and circulation spaces are carefully arranged around the atrium, allowing natural light and views to penetrate deep into the interior while strengthening visual connectivity between different parts of the residence. The atrium functions not only as a source of environmental performance, but also as a spatial device that enhances orientation and creates a stronger sense of connection between family members occupying different parts of the house.
At the ground floor, the primary communal functions are organised around the atrium. The living and dining spaces benefit from borrowed light, cross-ventilation and direct visual access to landscaped courts. By introducing the atrium at the centre of the plan, the design avoids the typical limitations associated with deep semi-detached houses, where interior spaces often rely heavily on artificial lighting and mechanical ventilation. Instead, daylight is drawn deep into the building, creating a bright and comfortable environment throughout the day.
The second storey is arranged as a family-oriented level where bedrooms and circulation spaces overlook the central void. The gently curved edge of the atrium shapes the corridor experience and creates visual connections across the house while preserving privacy within individual rooms. Natural light entering through the atrium filters into the circulation spaces, transforming what would traditionally be enclosed corridors into bright and engaging transitional environments. The open relationship between the rooms and the atrium encourages natural airflow and strengthens the sense of spatial continuity throughout the residence.
The attic level is conceived as a more private retreat containing the master suite and ancillary spaces. Positioned above the main family zones, this level benefits from elevated views, increased privacy and a strong connection to natural light. Landscaped terraces and carefully positioned openings extend the living environment beyond the enclosed interior, creating opportunities for outdoor relaxation while maintaining a close relationship with the central atrium below. The arrangement allows daylight and ventilation to continue flowing vertically through the house, reinforcing the environmental performance established at the lower levels.
The curved geometry of the atrium softens the rectilinear nature of the site and creates a more fluid spatial experience. As occupants move through the house, changing perspectives across the void reveal connections between floors, enhancing both orientation and a sense of openness within the relatively compact footprint of the semi-detached bungalow. The sculpted form of the atrium introduces a dynamic architectural quality that contrasts with the linear site constraints while enriching the experience of movement throughout the residence.
Together, the three floor plans demonstrate how the atrium acts as the spatial heart of the house, organising circulation, improving environmental performance and strengthening visual relationships between interior spaces. The result is a residence that feels significantly larger, brighter and more connected than its footprint might suggest, while establishing a harmonious relationship between architecture, landscape and everyday family living.
LAYOUT PLANS
The floor plans illustrate how the double-volume curved atrium is integrated within the compact footprint of the semi-detached bungalow. Acting as the spatial heart of the residence, the atrium introduces daylight, natural ventilation and visual connectivity while organising the relationship between communal and private spaces across all three levels.
1ST STOREY PLAN:Living, dining and circulation spaces are arranged around the central atrium, allowing natural light and landscape views to penetrate deep into the interior while enhancing openness and spatial continuity.
2ND STOREY PLAN:Bedrooms and family spaces overlook the atrium void, strengthening visual connections between floors while maintaining privacy and encouraging natural cross-ventilation.
ATTIC FLOOR PLAN:The attic-level retreat is organised around the upper portion of the atrium, creating a private sanctuary that benefits from abundant daylight, natural airflow and framed views of the surrounding landscape.
ELEGANCE IN MOTION
The double-volume atrium forms the spatial heart of the residence, where architecture, light and movement converge within a carefully composed interior environment. Defined by a sculptural spiral staircase and a restrained material palette of black steel, solid white oak and textured white surfaces, the space embodies a sense of quiet elegance and timeless refinement.
As the central circulation element of the house, the staircase is conceived as both functional infrastructure and architectural focal point. Its flowing geometry introduces a sense of movement and continuity, drawing the eye upward through the atrium while reinforcing visual connections between different levels of the residence.
The double volume atrium serves as the grand entry, dining area and main circulation space of this semi-detached house.
Natural light filters through the vertical volume throughout the day, accentuating the curvature of the stair and revealing subtle variations in material texture. The interplay between light, shadow and form transforms the atrium into a dynamic living space that evolves with changing daylight conditions.
Beyond its visual presence, the atrium performs as an environmental moderator, encouraging natural ventilation, enhancing spatial openness and bringing daylight deep into the interior. The carefully considered relationship between structure, circulation and natural light establishes a welcoming arrival experience while creating a memorable architectural centrepiece.
The completed space demonstrates the successful translation of the original design vision into built form. From the proportions of the atrium to the detailing of the staircase and material junctions, the realised architecture closely reflects the intent established during the design development process. The result is an interior environment that balances spatial drama, craftsmanship and everyday comfort while embodying the precision and design excellence that define the project.
White Oak Stair Detailing
Solid white oak treads and integrated lighting highlight the craftsmanship and precision of the stair construction.
Curved Staircase Geometry
The flowing spiral form creates a sculptural architectural element that defines the identity of the atrium.
DESIGN REALISATION & VISUALISATION COMPARISON: At MU Architects, we believe that design excellence lies not only in conceptual thinking but also in the precise execution of every detail. The juxtaposition of the completed atrium photographs and the original 3D visualisations demonstrates the project's remarkable fidelity to the design intent, highlighting our commitment to translating ideas into built reality with clarity, precision and craftsmanship.
SCULPTED SPIRAL STAIRCASE
A sculptural spiral staircase rises through the double-volume atrium, establishing a fluid architectural connection between floors. Crafted from black painted steel, solid white oak and smooth white plaster surfaces, the staircase becomes both a functional circulation element and the defining spatial centerpiece of the residence.
Spiral Stair & Garden Connection
The staircase establishes a seamless transition between interior living spaces and the landscaped courtyard beyond.
LIVING, DINING & KITCHEN CONTINUITY
The living and kitchen spaces are conceived as a continuous open-plan environment that encourages interaction, flexibility and everyday family living. Rather than defining each function as a separate room, the design establishes a seamless spatial relationship between cooking, dining and relaxation areas, allowing activities to flow naturally throughout the home.
A restrained palette of black-stained oak timber, crisp white surfaces and carefully integrated lighting creates a calm and contemporary interior atmosphere. The dark timber wall panels provide warmth, texture and visual depth while establishing a strong architectural backdrop that unifies the communal spaces.
Generous glazing introduces abundant natural daylight into the interior, softening the contrast between dark and light materials while strengthening the connection to the surrounding landscape. Views of greenery become an integral part of the living experience, bringing a sense of openness and tranquillity into the heart of the house.
The kitchen is designed as both a functional workspace and social gathering point. Anchored by a generous island counter, the space supports informal dining, daily interaction and entertaining. Clean lines, integrated storage and carefully selected finishes reinforce the project's commitment to simplicity, craftsmanship and timeless design.
Together, the living and kitchen areas establish a welcoming environment that balances practicality with refinement. Through the thoughtful combination of materiality, natural light and spatial openness, the residence achieves a contemporary living experience that remains warm, comfortable and highly livable.
Living Room & Timber Feature Wall
Black-stained oak timber panels create warmth and visual depth while providing a refined architectural backdrop to the main living space.
Open Kitchen & Island Counter
A minimalist kitchen centred around a generous island that encourages social interaction while maintaining a clean and contemporary aesthetic.
LIGHT, AIR & WELLNESS
The bathroom spaces are designed as light-filled retreats where natural illumination, ventilation and materiality work together to create a calm and restorative environment. Rather than relying solely on artificial lighting and mechanical systems, the design incorporates open-to-sky light wells and carefully positioned openings that allow daylight and fresh air to penetrate deep into the interior.
Master Bathroom Sanctuary
White marble surfaces, pale limestone walls and natural daylight create a calm and refined retreat for everyday living.
A restrained palette of white marble, pale limestone, textured brick surfaces and natural timber elements establishes a bright and timeless atmosphere. The combination of reflective materials and soft natural light enhances the perception of spaciousness while creating subtle variations of texture and shadow throughout the day.
The master bathroom is conceived as a private sanctuary that extends beyond conventional notions of utility. Full-height glazing, open light courts and carefully framed views introduce a constant visual connection to the outdoors while preserving privacy. Natural ventilation helps regulate humidity and improves environmental comfort, contributing to a healthier and more enjoyable daily experience.
In the powder room, an open-to-sky air well positioned behind the full-height mirror introduces daylight and airflow into an otherwise enclosed space. This simple yet effective design strategy improves environmental performance while creating a unique spatial quality defined by natural light and changing atmospheric conditions.
Open-to-Sky Light Well
A private air well introduces natural light and ventilation deep into the bathroom while maintaining visual privacy.
Together, these spaces demonstrate how thoughtful architectural planning can transform everyday rituals into moments of comfort and wellbeing. Through the integration of natural light, ventilation and carefully selected materials, the residence achieves an environment that is both environmentally responsive and quietly luxurious.
Floating Vanity & Light Court
Natural illumination reflected from the white brick light well enhances spatial brightness and material richness throughout the master bathroom.