Biophilic design has entered the mainstream conversation. People are choosing plants for their living rooms, reaching for natural materials over synthetic ones, gravitating toward spaces that feel connected to the natural world. That instinct is real, and it's worth taking seriously. It's not a trend. It's biology.

But here's what I've come to understand after fifteen years in interior design and a PhD in medical science: the research on how natural environments affect human physiology goes much deeper than the aesthetic has so far taken us. And when you understand what the science is actually pointing to, the picture becomes richer, more specific, and honestly — more exciting.

This post is about that fuller picture.

WHAT BIOPHILIC DESIGN ACTUALLY IS

The term comes from the biologist E.O. Wilson, who coined "biophilia" in 1984 to describe the innate human affinity for the natural world. We are, at our core, creatures of nature. We evolved in it. Our nervous systems are calibrated to it. And when we're separated from it — as most of us are, most of the time — we feel it, even when we can't name it.

Biophilic design is the practice of bringing nature back into the built environment in ways that genuinely support human wellbeing. Not just decoratively, but in ways that engage our biology — our senses, our nervous systems, our deep evolutionary need for connection to the natural world.

The research on this is substantial. Studies consistently show that exposure to natural elements reduces cortisol levels, lowers blood pressure, improves cognitive function, supports better sleep, and increases feelings of restoration. These are not small effects. They are measurable, replicable, and significant.

Plants are part of this. Natural materials are part of this. And so is a whole range of other elements that don't always make it into the mood board — elements that, when you understand them, change how you think about every room in your home.

THE FULLER PICTURE

When I work with clients on biophilic design, I'm thinking about the space as a whole system. Not just individual elements, but how everything works together to shape how the space actually feels to live in.

That includes things like:

The quality and movement of natural light. Not just whether a room has windows, but whether the light changes throughout the day in ways that support circadian rhythms. Whether there's glare that creates visual stress. Whether the morning light reaches the places where people wake and begin their day. Light is one of the most powerful biophilic elements available — and one of the most consistently underestimated.

Prospect and refuge. The human need for both an unobstructed view outward and a protected, enclosed position. We evolved to feel safe when we could see without being seen — when we had a clear view of the environment from a sheltered position. A room that puts your back to the door, or a bed with no solid wall behind it, can create a subtle but persistent sense of unease. Getting this right doesn't always require a renovation. Sometimes it's as simple as rearranging the furniture.

Non-rhythmic sensory stimuli. The rustle of leaves. The flicker of candlelight. The sound of water. The scent of rain on stone. These are the unpredictable, nature-based sensory experiences that engage our attention gently — allowing the mind to rest and restore. They're different in quality from the repetitive, machine-generated stimuli that fill most modern homes, and they matter more than we often realise.

Visual load. The amount of information the visual system has to process at any given moment. High visual load — clutter, strong contrasts, dense patterns, competing focal points — requires cognitive effort and creates subconscious stress. Natural colour palettes and controlled visual complexity reduce this load. A space can be full of beautiful things and still be visually exhausting. Biophilic design pays attention to this.

Air quality and thermal comfort. The ability to open a window and feel fresh air move through a space is one of the most powerful biophilic interventions available. So is the specification of low-VOC materials — paints, adhesives, finishes — that support the air quality of the spaces where people sleep and breathe.

Connection to place. The use of local materials, native plants, and design choices that root a space in its specific landscape and ecology. A home in the Hunter Region should feel connected to where it actually is — to the light, the materials, the plants, the character of this particular part of the world. That sense of place is a biophilic element in its own right.

None of these things replace the plants or the natural materials. They sit alongside them. Together, they create something that goes beyond aesthetics — a space that genuinely supports the people who live in it.

WHY THIS MATTERS

The homes I find most powerful — the ones that clients describe as feeling like a sanctuary, like a place they genuinely want to come home to — are the ones where all of these elements are working together. Where the light is right. Where there's somewhere to sit that feels genuinely sheltered and safe. Where the air moves. Where the materials feel real under your hands. Where the space is quiet enough — visually, acoustically, sensorially — that your nervous system can actually rest.

These things are achievable in almost any home, at almost any budget. They don't always require a renovation. But they do require understanding what you're actually trying to achieve — and why. That's the shift I'm interested in: from biophilic design as an aesthetic to biophilic design as a framework for how a space actually feels to live in.

WHAT A GENUINE BIOPHILIC APPROACH REQUIRES

So what does it take to move from the aesthetic to the full picture?

It requires understanding the science. Not just the vocabulary, but the research on how natural elements affect human physiology and psychology. What does natural light actually do to the nervous system? How does prospect and refuge affect our sense of safety? What is the measurable impact of plants on air quality and stress levels? This is the foundation — and it's genuinely fascinating territory.

It requires a whole-space perspective. Biophilic design is not about individual objects — it's about the cumulative experience of a space. How does the light move through it? How does it feel to sit in different positions? What does the air smell like? What sounds are present? What is the visual experience when you walk in the door? These questions require looking at the space as a system.

It requires prioritisation. Not every biophilic element is equally achievable or equally impactful in every space. A good biophilic design process involves assessing what's present, identifying the gaps, and prioritising the interventions that will have the greatest effect on how the space feels.

And it requires understanding the people who will live in the space. Biophilic design is not one-size-fits-all. The elements that support restoration for one person may not be the same for another. A space designed for a single professional working from home has different biophilic needs than a space designed for a multigenerational household. The design has to start with the humans — their lives, their rhythms, their relationships with each other and with the natural world.

THE FINDLAY & CO. APPROACH

At Findlay & Co., biophilic design is not a trend we've adopted. It's the framework through which we understand every project.

When we begin working with a client, we're thinking about how the space will feel to live in — how the light will move through it at different times of day, how the materials will age and feel under the hands of the people who use them, how the layout will support the way this particular household actually moves and gathers and rests.

We draw on fifteen years of experience and a deep grounding in the science of how spaces affect human wellbeing. And we do all of this in partnership with our clients — because the most important element in any home is the people who live in it. Their needs, their rhythms, their relationships, their sense of what home means. That's where every project begins.

A FINAL THOUGHT

The next time you're drawn to a space that feels genuinely good to be in — not just beautiful, but restorative — it's worth asking what's actually creating that feeling.

Is it the plants? Possibly. Is it the natural materials? Partly. Is it also the light, the sense of shelter, the quality of the air, the way the space holds you without overwhelming you? Almost certainly.

That's biophilic design working at its fullest. And it's what I think about every time I walk into a home.

Naomi Findlay is the founder of Findlay & Co., a boutique interior design practice specialising in biophilic wellness design. With a PhD in medical science and over 15 years of experience, Naomi designs spaces for how humans actually feel and live — not just how they look. Findlay & Co. offers in-person design services in the Hunter Region and online consultations Australia-wide. Curious about how your home is performing as a biophilic space? Book a discovery call with Findlay & Co.