Arboreal Architecture

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Arboreal Architecture

Arboreal is an RIBA Chartered architecture practice in London, designing regenerative, low-energy buildings across the UK.

We create nature-positive, biophilic spaces that combine architecture, landscape and interiors with deep sustainable thinking.

26/08/2026

Nature is remarkably good at making things.

Growth, decay, renewal. Materials that come from the earth and, eventually, return to it. Complex structures formed at ambient temperature and pressure, powered largely by sunlight, water and soil.

There is still much to learn from this intelligence.

At Arboreal Architecture, we look to nature not simply as an aesthetic reference, but as a model for how we design and build. We question where materials come from, what they require to be made, how they affect people and the wider environment, and what might happen to them at the end of a building’s life.

This means looking beyond conventional solutions and towards natural, plant-based and low-impact materials that can be grown, used, reused and, where possible, returned safely to the earth.

But integrating with nature is about more than materials.

Every project is an opportunity to ask what is already living on a site, what should be protected, and what could be restored, re-grown or re-wilded. Good architecture should insulate us without isolating us from the world around us.

13/08/2026

Visuals of our latest project.

Sustainable architecture for us starts with the building fabric. Orientation, thermal performance, airtightness, glazing and passive solar gain all influence energy demand before mechanical systems are introduced.

We also consider embodied carbon, material durability and reuse - particularly when working with existing buildings.

For us, sustainability is a question of building physics, material choices and long-term performance, integrated into the architectural design from the outset.

Do you have a project in mind? Get in touch.

12/08/2026

Designing with Children in Mind

Childhood is fleeting, but the places we grow up in can stay with us for a lifetime.

A favourite corner. A window seat. A place to hide, play, read or imagine. The small details of a home can become some of our most enduring memories.

When designing family homes, we think carefully about how children might experience and inhabit the space - creating opportunities for play, independence, exploration and connection, while allowing the home to work equally well for everyone.

For us, sustainability is also about longevity. A truly sustainable home should be able to adapt as family life changes: from the early years of childhood, through adolescence and into adulthood.

22/07/2026

A few years after completion, we returned to Sefton House to photograph the project again.

It’s always rewarding to revisit a building once it has become a home. The garden has matured, the spaces are filled with everyday life, and the architecture has settled into its surroundings.

Originally designed as a deep retrofit and extension of a Victorian house, the project combines a fabric-first approach, passive design and low-carbon materials to create a bright, comfortable family home with a strong connection to the garden.

We love seeing projects not just when they’re finished, but when they’re fully lived in.

Photos: Agnese Sanvito

23/06/2026

Passivhaus or EnerPHit: which standard is right for your project?

While both aim to create healthier, more comfortable and energy-efficient buildings, they’re designed for different situations.

Passivhaus is the benchmark for ultra-low-energy new builds:
• Space heating demand ≤ 15 kWh/m²/year
• Airtightness ≤ 0.6 ACH @ 50Pa
• Independently verified performance

EnerPHit applies the same principles to existing buildings:
• Typically targets ≤ 25 kWh/m²/year
• Airtightness ≤ 1.0 ACH @ 50Pa
• Designed specifically for deep retrofit projects

Many older UK homes require more than 200 kWh/m²/year for heating. An EnerPHit retrofit can reduce this by up to 80 - 85%, improving comfort, air quality and energy efficiency while extending the life of existing buildings.

GIve us a call for a free consultation about your project.

17/06/2026

Can a Victorian house achieve Passivhaus standards?

Absolutely.

Historic buildings are often seen as incompatible with ultra-low-energy performance, but our experience tells a different story.

This 170-year-old Grade II listed townhouse became the first listed building in England to achieve the AECB Silver Performance Standard, proving that heritage and sustainability can work together.

Key outcomes:

• 75% reduction in space-heating demand
• Airtightness improved from 9.6 ACH to 1.8 ACH
• Original sash windows retained and upgraded with secondary glazing
• Fabric-first approach using bespoke insulation strategies tailored to the historic building fabric

For us, retrofit is about more than energy targets. It’s about creating comfortable, healthy and resilient buildings while preserving the character and craftsmanship that make them special.

If you’re considering a retrofit of a Victorian or listed property, we’d love to discuss the possibilities.

16/06/2026

What is MVHR, and why are so many homeowners asking about it?

As homes become more airtight and energy efficient, ventilation is becoming just as important as insulation. Mechanical Ventilation with Heat Recovery (MVHR) systems provide a continuous supply of fresh, filtered air while recovering heat that would otherwise be lost.

The result?

• Better indoor air quality
• Reduced condensation and mould risk
• Improved comfort throughout the year
• Lower heating demand
• A healthier home environment

We are often asked whether MVHR is worth considering for a renovation or new-build project. The answer depends on your home, but understanding how these systems work is an important part of designing sustainable, comfortable buildings.

We’ve created a simple guide answering the questions we hear most often, from airtightness and maintenance to summer comfort and energy efficiency.

To read it, head to our website.

08/06/2026

Planning permission granted!

We’re thrilled to be moving forward with one of our most ambitious projects to date: a fully off-grid Nature House in the Park Ecovillage, Findhorn.

Inspired by the Naturhus concept, the home will sit inside a greenhouse envelope, generating its own renewable energy, harvesting rainwater, recycling resources, and producing fresh food all year round.

A home designed not just to reduce its impact on the planet, but to actively regenerate it.

29/05/2026

Reconnecting this off-grid shepherd’s hut with solar power has been a rewarding process so far.

We’re currently testing systems and surveying the grounds for a new off-grid Naturhus project in Findhorn, Scotland - combining sustainable design, self-sufficiency, and low-impact living.

Excited to keep developing this project and share the journey as it evolves.

20/05/2026

The UK is facing a rapidly warming future, with heatwaves potentially exceeding 40°C by 2050 and many homes at risk of overheating. While reports point to increased reliance on air conditioning, this also raises concerns around energy demand and emissions.

As eco-architects, this is already the reality we design for.

Our practice focuses on passive-first solutions: external shading, orientation-led design, thermal mass, and natural cross-ventilation to reduce heat at source. We also prioritise landscape strategies - trees, green roofs, and shaded public realms - to cool the environment before heat reaches the building.

Mechanical cooling has a place in critical settings, but resilience must begin with how we shape buildings, not what we plug into them.

This is the future of climate-responsive design - and it’s already underway in our work.
NaturalVentilation ShadingDesign LowCarbonArchitecture UKClimateAdaptation FutureOfArchitecture

Address

St. Margaret's House, 21, Old Ford Road
London
E29PL

Website

http://arborealarchitecture.com/, https://arborealarchitecture.com/, https://arborealarchitecture.com/practice/studio, h

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