Casa Baldo | Ruy TeixeiraLocated in Rio de Janeiro, Itana House presents an example of architectural renewal. The project involved the renovation and expansion of Casa Baldo, an original Oscar Niemeyer design, exploring the relationship between the built environment and the natural landscape. Siqueira+Azul undertook the task of transforming this site. By acquiring the neighboring property, the studio extended the possibilities of the urban lot, integrating a garden and leisure annex into the design. This intervention revitalized the property and redefined its relationship with the surroundings.Itana House Technical InformationOriginal House Architects: Oscar NiemeyerRenewal & Expansion Architects1-13: Siqueira+AzulLocation: Rio de Janeiro, BrazilArea: 800 m2 | 8,610 Sq. Ft.Project Year: 2017 2025Photographs: Ruy Teixeira, Andr NazarethThe faades of the main existing blocks receive a new element large pivoting panels. Their functioning is made feasible by the custom structural scheme in an iron square mesh. Siqueira+Azul ArchitectsItana House PhotographsCasa Baldo + Itana House | Andr NazarethEntrance | Andr NazarethEntrance | Andr NazarethPool | Andr NazarethPool | Ruy TeixeiraSide View | Andr NazarethGardenPatio | Ruy TeixeiraDining Area | Andr NazarethRooftop | Ruy TeixeiraCasa Baldo Renewal and ExpansionThe expansion of the compact Niemeyer-designed Casa Baldo was made possible by the acquisition of the adjacent property. This enabled the introduction of a garden marked by distinct vertical and horizontal delineations. This green space acts as both a visual and functional extension of the architecture.The new leisure annex appears to hover between the pool and the garden. Its planar design adds a dynamic element to the composition while maintaining a sense of lightness. This structure balances bold architectural gestures with sensitivity to context.Itana House: Integration of Independent VolumesItana House is composed of three distinct yet interconnected volumes. Pathways, walkways, and stairs link these constructions, creating a seamless flow between spaces. These circulation routes are more than just functional; they are architectural elements inviting movement and exploration.One of the most striking features is the circular oculus, which serves as an observation gap and a source of additional natural light. Positioned strategically, it provides views into the upper courtyard while enhancing the spatial experience of the interiors. The helical staircase, leading to a tower element with sliding glass panels, underscores the projects commitment to vertical integration. These design choices enhance usability and enrich the spatial narrative.Itana House: Design Details and Structural InnovationsThe projects faades underwent a transformation with the addition of large pivoting panels. These custom-designed elements, supported by an iron square mesh structural framework, allow for interaction with the outdoors while maintaining the integrity of Niemeyers original design. This intervention is functional and aesthetic, offering flexibility and enhancing the buildings appeal.A long bench, designed to outline the boundary of the slabs, serves as a bridge between indoor and outdoor spaces. This feature reinforces the continuity of spaces, blurring the line between architecture and landscape. Inside, natural lighting is optimized through the oculus and strategically placed openings.The leisure annex, constructed from natural materials such as stone and concrete, contrasts with the aesthetic continuity of Casa Baldo. This juxtaposition highlights the studios skill in balancing differentiation and harmony within the same project.Landscape Architecture and Urban HarmonyThe landscape design by Isabel Duprat plays a pivotal role in the project. The gardens vertical and horizontal delineations create a cohesive extension of the architectural design. By incorporating native plant species and structured layouts, the garden enhances the propertys privacy while offering expansive views of the surroundings.The integration of green spaces reflects a larger trend in urban renewal, where architecture seeks to mitigate the harshness of metropolitan environments. Duprats work emphasizes the importance of landscape architecture in fostering a dialogue between natural and built elements, making the garden an inseparable part of the projects identity.Itana House PlansLower Floor Plan | Siqueira+AzulUpper Floor Plan | Siqueira+AzulSection | Siqueira+AzulElevation | Siqueira+AzulItana House Image GalleryAbout Siqueira+AzulCredits and Additional NotesLead Architect: Lia SiqueiraArchitect: Felipe SiqueiraArchitecture Studio: Siqueira+Azul ArchitectureLandscape Architect: Isabel Duprat Arquitetura PaisagsticaLighting Design: Maneco QuinderStructural Design: AbilitEngineering: Stewart EngenhariaWindows Manufacturer: Panoramah!Waterproofing: CetimperSoftware Used: AutoDesk, Trimble Navigation, LightworksLighting Fixtures: FLOS, DimluxPlumbing Fixtures: DecaAudio and Video: EVOLUSOM