Mana: Herefordshire Eco-House, 1-Acre Permaculture Dream

The "Mana" project details the development of an eco-house situated on a one-acre permaculture plot in rural Herefordshire, UK. The homeowners, having resided on Howle Hill for nearly 13 years, currently live in a three-bedroom house separate from their cultivated land. Their objective is to construct a smaller, more sustainable home directly on their field, integrating their living space with their food production and natural environment.

For over two years, the homeowners have been planning this eco-house, and despite initial challenges with local planning authorities who were perceived as risk-averse, permission to build was granted in July 2025. The design, developed in collaboration with architect Ed Dale-Harris and permaculture designer Jay Abrahams of Biologic Design, emphasizes natural, low-carbon materials and operational simplicity.

The core goals for Mana House include:

* Integration: Seamlessly blending the house with the surrounding land, fostering a connection between human and non-human elements.

* Sustainability: Minimizing external inputs and outputs to create a circular economy, focusing on self-sufficiency in food and resources.

* Materiality: Utilizing natural, zero/low-carbon materials that can be biodegraded or recycled at the end of the house's life.

* Waste Management: Implementing a zero-waste system, aiming for off-grid living where outputs like humanure, urine, and used water are repurposed for growing food and enhancing biodiversity.

* Biodiversity: Enhancing natural habitats to encourage a diverse range of flora and fauna.

* Food Production: Sourcing fresh food from the land or through local foraging.

* Education and Demonstration: Serving as a learning site, a role model, and a beacon for building with nature.

* Reduced Impact: Achieving greater isolation from suburban influences, promoting peace, quiet, and a deeper connection with nature.

* Timeline: Aiming for a productive, fully functional, and integrated design by the end of 2026.

The design incorporates several innovative and permaculture-aligned features:

* Waste as Resource: Food waste will be composted, and human outputs from a compost toilet will be processed to feed the soil, eliminating water usage for flushing.

* Water Management: The roof will collect rainwater for household use and electricity generation. Used water from the house will be directed to a "WET System" to irrigate and nourish crops, providing multiple yields from a single design element. Excess rainwater will be captured in a pond for irrigation, with future plans to use it as drinking water to achieve off-grid status.

* Foundations: Instead of concrete, rubble trench foundations will be used, employing natural stone with low embodied carbon, a process that is quicker and more environmentally friendly.

* Walls: Hempcrete walls will provide breathability, humidity control, and superior insulation without thermal bridges or airflows. Hempcrete also sequesters carbon during its growth and continues to absorb it even after construction.

* Green Roof: A green roof will visually integrate the house with its natural surroundings, regulate indoor temperature, and absorb approximately half of the rainfall, mitigating flood surges.

* Energy Generation: Solar heating and electricity generation are planned, with a future phase including a wind generator to balance energy sources throughout the year, especially during winter. Research into turbine-less wind generators and improved battery technology is ongoing.

The one-acre site is described as an exposed, open hilltop location with significant natural diversity, including over 80 wildflower species, large populations of bees and butterflies, and various birds, bats, reptiles, and mammals. The land allocation includes 10% industrial, 10% mature woodland, 20% new woodland, 6% cultivation, 10% orchard, and