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Casa 4H: A Mediating Architecture Amidst Coastal Dunes

architecture-design · 2026-06-24

Casa 4H, designed by Besonias Almeida Arquitectos, is a 511 m² residence completed in 2024 in Costa Esmeralda, a coastal enclave on the Buenos Aires coastline. The project, led by María Victoria Besonías and Guillermo de Almeida, with design team Micaela Salibe and Hernán de Almeida, and built by Desur Constructora, sits on a site near the sea but without direct ocean views. Its greatest asset is a dense pre-existing grove of pines. The architecture acts as a mediator, integrating the landscape as the core of the living experience. The house is nestled among native grasslands and young acacias and maritime pines, blending into the dune ecosystem.

Key facts

  • Casa 4H is located in Costa Esmeralda, a coastal enclave on the Buenos Aires coastline.
  • The project area is 511 m².
  • The year of completion is 2024.
  • Lead architects are María Victoria Besonías and Guillermo de Almeida.
  • Design team includes Micaela Salibe and Hernán de Almeida.
  • General construction was carried out by Desur Constructora.
  • The site features a pre-existing grove of pines as its main asset.
  • The architecture mediates between built form and natural landscape.

Entities

Artists

  • María Victoria Besonías
  • Guillermo de Almeida
  • Micaela Salibe
  • Hernán de Almeida

Institutions

  • Besonias Almeida Arquitectos
  • Desur Constructora

Locations

  • Costa Esmeralda
  • Buenos Aires
  • Argentina

Sources