Innovation and Sustainability in Pantano de San Juan
An Exclusive Design in the Heart of Nature
At EXarchitects, we are committed to sustainable and innovative architecture that respects the natural environment. JAS House is a clear example of this: a single-family home project with a guest house, located in the stunning landscape of the Pantano de San Juan, in San Martín de Valdeiglesias (Madrid).
This project combines an exclusive architectural design with a traditional construction system based on an in-situ concrete structure.
Architecture Integrated with the Landscape
From the outset, the design aimed to blend into the natural surroundings, respecting the existing topography and vegetation. The architectural solution is based on two independent volumes which, although physically separated, maintain a visual and aesthetic continuity, allowing the construction to blend seamlessly into the landscape.
The result is a harmonious, efficient home with a unique design, ideal for those seeking a modern and sustainable house immersed in nature.
Spaces Designed for Comfort and Efficiency
The design of JAS House is structured around an L-shaped layout, featuring:
✔ Spaces that provide warmth and comfort.
✔ Daytime areas with flat roof volumes that make the most of natural light.
✔ Use of distinct materials, combining innovation and energy efficiency.
Thanks to this layout, the house maximizes natural light and optimizes energy consumption, creating a functional, modern space in harmony with the landscape.

Project in Progress
Currently, JAS House has moved from the basic design phase to advanced construction. Drone images show the progress of the build and its integration with the surroundings, reflecting EXarchitects’ commitment to sustainable, innovative, and high-quality architecture.
If you’re looking for architects in Pantano de San Juan to design and build your single-family home in a privileged natural setting, EXarchitects can help you bring your project to life.

PROJECT DETAILS
Project Title: JAS House Architect: EXarchitects Status: Execution project. Year: 2022–xx Client: Javier Andonegui Location: Pantano de San Juan, San Martín de Valdeiglesias (Madrid) Type: Single-family home + Guest house. Renderings: EXarchitects
If you’re looking for an exclusive, sustainable design tailored to its surroundings, EXarchitects can bring your project to life. Contact us and discover how we can help you build the house of your dreams.