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JSa's Casa Marte: Off-Grid Retreat in Mexico's Valle de Bravo

architecture-design · 2026-06-15

JSa has completed Casa Marte, an off-grid family retreat in the forested Valle de Bravo region of Mexico, two hours west of Mexico City. The 494-acre Reserva Peñitas nature reserve has become a hub for contemporary Mexican architecture, with houses by Fernanda Canales, Hector Barroso, and Javier Sánchez. Casa Marte, finished in 2024, consists of three freestanding volumes that evoke a child's drawing of a house, designed to blend into the landscape and offer panoramic views of the Xinantécatl volcano. The project prioritizes water conservation and minimal environmental impact.

Key facts

  • Casa Marte is located in Reserva Peñitas, a 494-acre nature reserve near Valle de Bravo, Mexico.
  • The house was completed in 2024 by JSa, led by Javier Sánchez.
  • The design features three freestanding volumes forming a mini cluster.
  • The architecture defers to the surrounding landscape, including oak-covered boulders and the Xinantécatl volcano.
  • Reserva Peñitas has become a hotbed for contemporary Mexican architecture, with works by Fernanda Canales and Hector Barroso.
  • Casa Marte is an off-grid compound emphasizing water conservation.
  • The site includes a promontory with valley views and a forested section across a ravine.
  • The house's gabled silhouettes are inserted into the terrain to maximize panoramic value.

Entities

Artists

  • Javier Sánchez
  • Fernanda Canales
  • Hector Barroso

Institutions

  • JSa

Locations

  • Valle de Bravo
  • Mexico City
  • Mexico
  • Reserva Peñitas
  • Xinantécatl volcano

Sources