Bangalo Txai by TETRO is a coastal house in Itacare, Bahia, organized as four separate volumes across a steep site facing the Atlantic Ocean. The project uses topography, vegetation, and shade as primary architectural materials, distributing bedrooms, social spaces, terraces, and pool along different levels of the slope. Its most explicit spatial device is the glass-and-biriba wood roof over the social area, where filtered light produces a changing interior condition related to the surrounding coconut grove.
Bangalo Txai Technical Information
- ArchitectsTETRO
- LocationItacare, Bahia, Brazil
- Gross Area769.61 m2 | 8,283 Sq. Ft.
- Project Years2025
- Photographs© Lupercio Fotografia
In this place, what matters is shade. The seawater, the coconut trees, and the light filtered through their leaves guided the main design decisions.
– TETRO
Coastal Topography and Fragmented Site Planning
Bangalo Txai occupies an elevated coastal slope in southern Bahia, where the terrain rises above a coconut grove before opening toward the Atlantic Ocean. Rather than imposing a single compact volume on the hillside, TETRO divides the house into four blocks set at different elevations. This strategy allows the project to follow the gradient of the land while giving each principal room a direct orientation toward the sea.
The distribution separates the program into a main suite at the upper level, two guest blocks below, and a central social volume containing the living room, dining area, gourmet kitchen, terrace, and pool. Privacy is therefore produced less by enclosure than by distance, level changes, and the occupation of the site as a sequence of platforms. The house is not experienced as a continuous interior, but as a group of rooms embedded in an outdoor itinerary.
Circulation takes place through decks, stairs, and garden paths, requiring movement through the landscape between sleeping and social areas. This decision gives the project a resort-like spatial logic, but it also makes the terrain legible in daily use. The act of crossing from one block to another exposes residents to wind, vegetation, changes in light, and shifting views, turning circulation into a measure of the site rather than a neutral connector.
Shade as an Architectural Device
The central social space is defined by a roof system that combines a glass upper layer with a lower lattice of biriba wood. The glass provides climatic protection while the timber screen modulates direct sunlight, creating an interior environment shaped by shadow rather than by solid enclosure. The result recalls the filtered light beneath coconut palms, translating a local environmental condition into an architectural section.
Photographs of the living and dining areas show the extent to which this roof becomes the dominant spatial element. Striped shadows fall across dark textured walls, stone floors, white sofas, timber furniture, and dining surfaces, producing patterns that shift throughout the day. The ceiling is not merely a cover; it is a mechanism for registering time, orientation, and weather inside the room.
In a tropical coastal climate, shade has a practical role in reducing heat gain and softening glare. Here, however, it also becomes a sensory and compositional strategy. The project avoids treating openness as exposure alone. Instead, it constructs a layered atmosphere in which the boundary between shelter and landscape is mediated by filtered light, deep eaves, and the changing density of the roof screen.
Materiality, Geometry, and Landscape Integration
The bedroom blocks are capped with planted slabs, which reduce their visibility from above and help them merge with the slope. From aerial views, these volumes register more as green terraces edged by earth-toned walls than as conventional roofs. This approach is especially significant on a coastal hillside, where the visual impact of construction can easily dominate the landform.
The walls are angular and slightly irregular, finished in a pinkish earth tone that relates to local soil, cliffs, and rustic mineral surfaces found along the Bahian coast. Their geometry avoids literal reference to vernacular architecture. Instead of reproducing recognizable regional forms, the project abstracts qualities of mass, color, and terrain into folded retaining surfaces and non-orthogonal enclosures.
This tension between embeddedness and formal autonomy is one of the central questions of the house. The planted roofs and tonal palette work toward visual integration, while the broken geometries assert the building as a contemporary intervention. The architecture does not disappear into the landscape, but it resists the object quality of a single isolated villa by fragmenting its mass and tying each block to a specific level of the site.
Social Space, Horizon, and Visual Continuity
The social volume gathers living, dining, kitchen, terrace, and pool into a continuous open environment oriented toward the Atlantic. Its plan privileges lateral expansion and visual depth, with the roof plane, deck, and pool running in parallel bands. The interior furnishings reinforce this informality through low seating, timber tables, woven surfaces, ceramics, and natural fiber textures, while the darker rear wall gives weight to the otherwise open section.
Retractable glazing on the sea-facing side allows the living room to open completely to the pool terrace. When the glass is withdrawn, the distinction between interior floor and exterior deck becomes secondary to the continuity of roof, shadow, and view. The pool edge sits close to the social space, so water functions not only as an amenity but as part of the room’s spatial extension toward the coast.
The infinity pool is long, narrow, and aligned with the horizon, establishing a deliberate visual correspondence between artificial water and ocean. Its dark blue surface contrasts with the grey stone deck and the earth-toned walls, while the overflow edge compresses foreground, coconut grove, beach, and sea into a layered composition. This alignment is effective because it is supported by the section of the site: the house does not simply look at the ocean, it is positioned above a landscape that allows the horizon to become part of the architectural datum.
About TETRO
TETRO is the architecture firm responsible for Bangalo Txai in Itacare, Bahia, Brazil. The project, completed in 2025, is led by Carlos Maia, Debora Mendes, and Igor Macedo, and organizes the house through a direct relationship with topography, vegetation, climate, and shade.
Credits and Additional Notes
- Structural engineers: Calculo concreto
- MEP consultants: CA Engenharia
- Landscape designers: Orsini
- Construction company: Bicalho&Trevisan
- Other contributors: Mingroni, Demuner, Todeschini, David Bastos, Hunter Douglas, Live Fitness, Matrix
- Other contributors: Bianca Carvalho, Bruno Bontempo, Bruna Maciel, Sabrina Freitas, Luisa Lage, Manuela Moss, Saulo Saraiva
