The Salem House in Thủ Dầu Một, Bình Dương Province, Vietnam, completed in 2021 by Story Architecture, demonstrates how modern residential design can respond to tropical climates while creating a light-filled, family-oriented home. The 125 square meter residence features an asymmetrical gable roof, expansive windows, and a central atrium planted with greenery throughout the ground and upper levels. The design prioritizes natural ventilation, abundant daylight, and a seamless connection between indoor and outdoor spaces. For a young couple with children, the house provides private bedrooms, a generous ground-floor living area, and an eat-in kitchen where the atrium becomes the daily focal point. The 2021 completion year places this project within a growing body of Vietnamese residential work that balances modern aesthetics with climate-responsive passive strategies. This project contributes to the ongoing development of nature-integrated tropical architecture that balances modern aesthetics with climate-responsive strategies.
The Asymmetrical Gable Roof as a Design Signature
The most striking exterior feature of the Salem House is its asymmetrical gable roof. Unlike a traditional symmetrical gable, where both slopes have equal pitch and length, this roof rises higher on one side and extends farther on the other. The asymmetry creates an expressive, sculptural form that distinguishes the house from neighboring buildings while serving several practical functions simultaneously. The taller slope allows for higher ceilings and clerestory windows on one side, drawing hot air upward and out of the living spaces through stack-effect ventilation. The extended eaves on the lower side shade the facade and windows from direct tropical sun, reducing solar heat gain without blocking daylight from entering deeper into the plan. This two-sided strategy uses the roof section to manage both solar and thermal performance without adding mechanical equipment. This approach is consistent with passive house design principles adapted for tropical climates, where roof geometry plays a critical role in thermal performance and energy load reduction.
Roof Performance Metrics and Comparative Data
Asymmetrical gable roofs offer measurable advantages over symmetrical or flat roofs in tropical residential construction. The taller side of the Salem House roof rises to create an internal ceiling height of 3.6 to 4.5 meters in the living area, compared to 2.8 to 3.2 meters typical of standard Vietnamese homes. This additional vertical space allows warm air to pool above the occupied zone, keeping the floor-level temperature 1.5 to 2 degrees Celsius cooler during peak afternoon hours. The extended overhang on the lower side shades 65 to 70 percent of the south-facing facade, compared to 25 to 40 percent for standard roof eaves. Clerestory windows integrated into the taller slope allow hot air to exit while admitting daylight, achieving natural illumination that penetrates 8 to 10 meters into the floor plan versus 4 to 6 meters for homes with standard window placement only.
| Roof Feature | Salem House | Typical Vietnamese Home | Benefit |
|---|---|---|---|
| Roof type | Asymmetrical gable | Symmetrical gable or flat | Expressive form + function |
| Overhang depth | 1.2–1.8 m | 0.3–0.6 m | 65–70% facade shading |
| Ceiling height (tall side) | 3.6–4.5 m | 2.8–3.2 m | Heat stratification + airflow |
| Daylight penetration | 8–10 m deep | 4–6 m deep | Reduced artificial lighting |
| Natural ventilation | Clerestory + stack effect | Window-only | Continuous air exchange |
The Atrium as a Living Core
The defining interior feature of the Salem House is the atrium located in the eat-in kitchen area. This planted courtyard brings natural light, ventilation, and greenery directly into the center of the home rather than relegating planting to the exterior perimeter. A built-in bench along one side of the atrium allows children to sit and play while parents prepare food in the adjacent kitchen, turning the atrium into a social hub rather than a purely decorative void. The atrium includes tall potted plants and creeping vines that create a relaxed, garden-restaurant atmosphere that makes daily meals feel special. The space connects the kitchen visually and spatially to the outdoors without sacrificing the privacy that a walled urban plot requires. This type of internal courtyard is particularly effective on compact urban sites where front and rear setbacks are too shallow for meaningful outdoor space. Multi-level spaces with catwalks and interior volume strategies for compact lots help the 125 square meter site feel significantly larger than its actual footprint by creating layered sightlines that trick the eye.
Ventilation and Daylight Performance
The atrium serves as the primary engine for passive natural ventilation. Warm air rises from the ground floor through the atrium void and exits through clerestory windows at the roof level, pulling cooler air in from shaded ground-floor openings. This stack-effect ventilation operates continuously during daylight hours and accelerates when outdoor wind speeds increase, because the atrium acts as a low-pressure zone that draws air through the building envelope. A skylight positioned above the atrium reinforces the stack effect by allowing solar radiation to warm the upper portion of the void, increasing the temperature differential that drives airflow. This top-down illumination reaches deep into the ground-floor plan, reducing the need for artificial lighting during daytime hours. Second-floor bedrooms benefit from the same airflow path, with perforated walls and sliding doors that allow cross-ventilation while maintaining visual privacy between family members. During Vietnam’s hot season, this passive system keeps the home comfortable without mechanical air conditioning for most of the day, reducing household electricity consumption by an estimated 30 to 50 percent compared to mechanically cooled homes of similar size.
Multi-Level Spaces and Visual Connections
The Salem House organizes its 125 square meters across multiple half-levels connected by a multi-level staircase and a catwalk framed with metal railings. Rather than stacking rooms on simple two-story floors, the architects introduced intermediate landings and split-level transitions that create diagonal visual connections between spaces. A person standing in the kitchen can look up through the atrium and see the catwalk, the second-floor landing, and the skylight beyond in a single glance. This diagonal layering makes the interior feel more expansive than its dimensions suggest, because the eye moves through multiple zones without encountering a solid wall. The living room features a partially tall ceiling that creates a sense of spaciousness while maintaining an intimate atmosphere through warm wood shelving and carefully positioned lighting fixtures. The landing on the upper floor doubles as a play area with built-in shelves for books and toys, making efficient use of circulation space that would otherwise go unused. Cottage-style interior volume techniques offer useful precedents for how split levels can add spatial interest without increasing a home’s total footprint or construction cost.
The Catwalk as Circulation and Experience
The catwalk bridging the upper level adds both practical circulation and theatrical quality to the interior experience. It provides access to second-floor bedrooms while offering an elevated vantage point over the atrium and living room below, turning a simple hallway into a spatial event. The metal railing keeps the catwalk visually lightweight and allows light to pass through the structure, preserving sightlines across the full height of the house from every level. The master bedroom features oversized sliding glass doors that open onto a balcony overlooking both the internal atrium and the surrounding neighborhood, reinforcing the visual connection between private and communal space. These layered sightlines make a compact house feel genuinely expansive: at any given moment, occupants can see three or four interconnected spaces operating at different heights and depths.
Material Palette for Tropical Modernism
The Salem House uses a restrained material palette of white stucco, wood, gray accents, and concrete tile. White stucco dominates the exterior and interior walls, creating a clean, neutral backdrop that reflects daylight throughout the interior while reducing heat absorption. Wood elements including shelving, cabinet fronts, and a custom bed frame with integrated nightstands and storage add warmth without overwhelming the minimalist aesthetic. Gray tones in select furniture pieces and flooring elements provide contrast and visual grounding. The concrete tile flooring continues up the staircase in a matching finish, creating visual continuity between horizontal and vertical surfaces that helps the small footprint read as a single, intentional composition rather than a series of disconnected spaces. This consistent material language makes the small house feel deliberately designed at every scale. Modern residential material strategies often employ similarly restrained palettes to maximize the perceptual size of compact interiors while keeping construction costs predictable through material repetition.
Perforated Walls for Light and Privacy
A perforated wall in the second bedroom allows light and air to pass through while maintaining visual privacy from the circulation areas. This screen-like element adapts traditional Vietnamese latticework for contemporary use, creating patterns of light and shadow that shift throughout the day and add a dynamic visual quality to otherwise simple spaces. A built-in desk in the same bedroom doubles as a vanity, serving the dual function that small-house design often requires. The integration of storage and work surfaces into the architecture itself, rather than relying on freestanding furniture, keeps the floor plan open and uncluttered while providing the storage capacity a family of four needs. Each built-in element was designed to specific dimensions based on the clients’ belongings, eliminating the wasted space that standard furniture gaps introduce.
Indoor-Outdoor Living with Tropical Planting
Plants play a central role in the Salem House experience. Potted and creeping plants appear throughout the interior atria, on balconies, along stair landings, and in window boxes at every level of the section. This planting strategy serves multiple interconnected purposes. It softens the hard edges of the white stucco and concrete tile surfaces, improves indoor air quality through natural filtration, and creates a constant visual connection to the tropical environment outside. The plants are not decorative afterthoughts but integral elements of the spatial design, specified during the design phase alongside structural and finish materials. The atrium bench is positioned so that children sit surrounded by greenery while parents cook at the adjacent counter. Staircase landings include built-in planting pockets that reinforce the green experience at every turn. The balcony off the master bedroom accommodates potted plants that screen the interior from neighboring buildings while providing a green outlook in every direction. Minimalist design strategies for compact homes demonstrate similar principles: each element earns its place through function, and nothing is added without a clear purpose. The advantage of this approach extends well beyond aesthetics. In Vietnam’s tropical climate, evapotranspiration from indoor plants can reduce ambient temperatures by 2 to 4 degrees Celsius in the immediate vicinity of the planting, supplementing the passive ventilation strategies already built into the architecture. Homeowners considering a similar design should budget for irrigation and drainage within the floor plan from the beginning, specifying overflow outlets and waterproof membranes beneath all planting areas to prevent moisture damage to the structure below. A drip irrigation system on a timer reduces maintenance requirements and keeps plants healthy during dry periods when the family is away.