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Clay Walls and Greywater Recycling in a Sustainable Yoga Retreat

Authors:
Diana Schcolnik goren, Ganit Kauffmann
Clay Walls and Greywater Recycling in a Sustainable Yoga Retreat

Project in-detail

With insulated clay walls and a greywater recycling system, the design promotes ecological sustainability while serving as a dedicated space for yoga practice within its serene natural setting.
5 key facts about this project
01
Unique passive heating strategies enhance energy efficiency.
02
The design includes a dedicated outdoor terrace for social interaction.
03
Rainwater and dew harvesting systems optimize water use.
04
Insulated clay walls provide excellent thermal mass.
05
The project minimizes site disturbance by reusing excavated soil.

The Yoga Solar House is located in Vale de Moses Yoga Retreat in Portugal. It serves as a space for yoga practice while blending with the surrounding nature. The design focuses on sustainability and energy efficiency, with a concept centered around maximizing sunlight and reducing energy use. The structure provides an environment that encourages relaxation and mindfulness.

Orientation and Form

The building is strategically oriented to take advantage of the sun’s path. The main façade faces west, allowing significant winter sun exposure while offering shade from the hot summer sun. This thoughtful orientation enhances the comfort of users and employs passive heating strategies essential for maintaining energy performance.

Functional Zoning

The Yoga Solar House consists of two main volumes. The practice area is located to the west, while the service area, which includes the kitchen, showers, and toilets, is on the east. This clear division of functions helps organize the space effectively. Between these two volumes lies an outdoor terrace that serves as a social area, encouraging interaction among users and creating a sense of community.

Material Considerations

The project incorporates insulated clay block walls and a concrete ceiling. These materials are chosen for their structural strength and thermal mass. By selecting these options, the design supports durability and energy efficiency, optimizing the building’s performance. The material choices reflect a commitment to thoughtful and sustainable design.

Water Management Strategies

An important feature of the Yoga Solar House is its water management system. It uses a combination of rainwater and dew harvesting alongside a greywater recycling process. This design promotes resource use efficiency and aligns with ecological sustainability. Through these strategies, the building minimizes its environmental impact and utilizes local climatic conditions effectively.

The sloped roof of the Yoga Solar House follows the natural contours of the cliff. This design element not only integrates the building with its landscape but also harnesses solar energy for effective energy generation.

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MICROHOME 10: Celebrating Small-Scale Living with €100,000 Prize Fund and Kingspan’s Innovation

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Competition organisers

The MICROHOME 10 competition invites participants to submit visionary designs for off-grid, modular microhomes that push the limits of sustainable, small-scale living. Organised by Buildner in partnership with Kingspan and Hapi Homes, this tenth edition sets the challenge of designing a dwelling for two people within a maximum floor area of 25 m², encouraging bold solutions adaptable to any urban or rural location. The competition continues Buildner’s mission to foster innovative approaches to compact, energy-efficient housing that can address pressing global challenges.

This year’s edition offers a generous total prize fund of €100,000, including the Kingspan Award for designs that integrate high-performance Kingspan products and the Hapi Homes Award for a project selected for real-world construction. In addition to cash prizes, the winners gain international exposure through Buildner’s media partnerships, publications, and a dedicated MICROHOME magazine, further amplifying their ideas to the wider architectural community.

Key dates for MICROHOME 10 include the closing date for registration on 25 September 2025, the submission deadline on 29 October 2025 (11:59 p.m. London time), and the announcement of winners on 9 December 2025. These milestones ensure participants have clear timelines to develop and present their concepts, with early registration discounts available to support students and emerging designers worldwide.

MICROHOME

Design a new small-scale home concept in the 10th edition of MICROHOME — 100,000 € prize + construction

100,000 € Prize Fund / Kingpsan Edition #10 ideas COMPETITION
Prize 100,000 € + Potential realisation
Eligibility Open to all
Final registration deadline 25 September 2025

Enter an open architecture
competition now

Buildner's Unbuilt Award 2025
Buildner's Unbuilt Award 2025
100,000€ Prize / 2025
Denver Affordable Housing Challenge
Denver Affordable Housing Challenge
Affordable Housing Series 19th Edition
The Architect's 
Chair
The Architect's Chair
Take a seat and make a statement! Edition #4
MICROHOME
MICROHOME
100,000 € Prize Fund / Kingpsan Edition #10
Kinderspace
Kinderspace
Architecture for Children’s Development #3
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