Personal

Kas Bordier

Pioneer of longevity architecture.

Your home is your most powerful health intervention. Founder of MAVI World. Board member, XPRIZE Healthspan. Partner, Jefferies London.

Kas Bordier, founder of MAVI World, photographed in natural light
Kas Bordier Founder, MAVI World · Switzerland

Your health is shaped long before willpower gets involved.

The spaces we live in quietly train our nervous system every day. Light, air, sound, materials, and temperature act as constant signals. Most of them go unnoticed. All of them matter.

When these signals are misaligned, people feel tired, wired, restless, or foggy and assume the problem is them. It usually is not.

My work focuses on making these invisible influences visible, measurable, and deliberately designed, so homes support human vitality instead of quietly draining it.

I do not believe better health starts with more discipline. I believe it starts with better environments. That is what I build.

Homes are lived systems. They should evolve with the people inside them. Precision and softness coexist. The goal is never optimisation for its own sake. It is creating spaces where you can be fully human.

Selected affiliations

Three platforms.
One thesis.

Philosophy

Environment is the first health layer.

Most approaches to health focus on behaviour: what you eat, how you exercise, when you sleep. These matter, but they are downstream of something more fundamental: your environment.

The environment you live in shapes your biology before willpower ever enters the equation. A bedroom with the wrong light spectrum will disrupt your circadian rhythm regardless of your sleep hygiene. Poor air quality will impair your cognition no matter how focused you try to be.

You cannot out-supplement a building working against you. That is why I focus on the invisible layer first.

Principles

Guiding values.

The work

Currently working in six geographies.

Private residences, development projects, and consulting engagements. Biology does not change with budget or scale.

The New Luxury, biology-first prime real estate, Jefferies London

From the Journal

The new luxury, why the next £100M property sale will be biology-first.

Jefferies London Prime Real Estate on the paradigm shift in how the world’s wealthiest buyers value property: from marble countertops to circadian lighting, medical-grade air filtration, electromagnetic shielding, and acoustic engineering calibrated to human performance.

The discerning buyers in the £10M plus bracket are no longer impressed by gold taps and cinema rooms. They want homes that actively enhance their health, extend their lifespan, and optimise their daily performance.

Damien Jefferies, Jefferies London
Read the full essay

2-minute assessment

Is your home supporting your health?

Eight quick questions on the eight quiet forces shaping your biology at home. Light, sleep, air, materials, EMF, temperature, sound, biophilic design. The Longevity Home Assessment returns a result that points to the rooms most worth changing first.

Take the assessment

Free · No signup required to start · Results in two minutes

Reading

Selected essays on longevity architecture.

The thinking behind the practice, in long form.

All essays →

Work with Kas

A small number of clients
each year.

Private residences, development projects, and consulting engagements. Tell us about the residence and where it sits in your timeline. We reply within one business day.

Begin a project
Begin a project