Designing with a Conscience — What Sustainable Interior Design Really Means
When most people think about sustainable choices, they think about recycling, energy efficiency, or perhaps switching to an electric car. What fewer people realise is that the choices made during a home renovation or interior design project can have a significant environmental impact — and that working with a designer who understands this is one of the most powerful ways to make your home not just beautiful, but genuinely responsible.
At Omorfia, sustainability is woven into how we approach every project. In this post I want to share some of the thinking that goes into our material and product recommendations — because I believe that when clients understand the reasons behind our suggestions, they're far better placed to make choices they feel genuinely good about.
Why Interior Design Matters More Than You Might Think
Here are some figures that might surprise you. 42% of the UK's entire carbon footprint is controlled or influenced by the built environment, and 62% of the UK's total waste can be attributed to the construction sector. Globally, the construction industry contributes to 50% of all climate change, 40% of drinking water pollution, 23% of air pollution and 50% of landfill. (biid, 2026)
Interior design sits squarely within that picture. Every floor covering, every paint colour, every piece of furniture, every length of curtain fabric involves a chain of decisions about raw materials, manufacturing, transportation and - eventually - disposal. Interior designers have a vital role to play in creating a more sustainable future. biid
Thinking About the Whole Life of a Product
One of the most important shifts in sustainable design thinking is moving away from simply asking "is this product eco-friendly?" towards asking about the full lifecycle of everything we specify.
When selecting materials, designers should consider the full life cycle of a product, including raw material extraction, transportation and manufacturing processes. That means thinking about where something comes from, how it was made, how long it will last, and what happens to it at the end of its life. (biid, 2026)
A cheap sofa that needs replacing in five years is rarely the sustainable choice, however affordable it feels at the time. A well-made piece that lasts twenty years — or can be reupholstered rather than replaced — is almost always the better option for your pocket and for the planet.
The Materials We Think About Most
Here are some of the material categories where the sustainability conversation is most relevant in a typical home project:
Timber and Wood Products
Sustainable timber choices involve choosing reclaimed materials, verifying provenance, avoiding endangered species and designing for longevity and disassembly. When we recommend timber products — flooring, furniture, joinery — we look for FSC certification (which confirms the wood comes from responsibly managed forests) or, even better, reclaimed or salvaged timber which carries no new environmental cost at all. (biid, 2026)
Paints, Coatings and Adhesives
This is an area close to my heart, because the environmental and health implications are both significant and very easy to address. Paints and adhesives carry environmental and health impacts, and the goal is to choose low-toxicity, transparent, responsibly manufactured products. Low VOC (volatile organic compound) paints are now widely available, perform just as well as, or better than, conventional options, and are kinder both to the people living in the home and to the environment. This is one of the simplest sustainable swaps we recommend on almost every project. (biid, 2026)
Textiles
Curtains, upholstery, cushions and rugs all involve textiles — and the textile industry has a significant environmental footprint. Making informed textile specifications involves verifying certifications, avoiding harmful treatments, supporting ethical supply chains and planning for reuse or composting. We look for natural fibres from traceable sources, certifications such as OEKO-TEX which confirm fabrics are free from harmful substances, and we actively encourage clients to choose quality pieces that can be reupholstered or repurposed rather than simply discarded. (biid, 2026)
Carpets
Sustainable concerns around carpet materials include how they can be recycled. Synthetic carpets are notoriously difficult to recycle and often end up in landfill. Natural fibre options such as wool, jute, sisal and coir are biodegradable and — in the case of wool particularly — extraordinarily durable. Where a client needs the softness of carpet, we'll always explore natural fibre options first. (biid, 2026)
Metals
Hardware, lighting, radiators and structural elements all involve metals. Specifying metals more sustainably means prioritising recycled content, safer coatings and responsible supply-chain practices. Many metals are highly recyclable, but the processes used to extract, refine and coat them vary enormously in their environmental impact. (biid, 2026)
Ceramics
Ceramics offer interior designers a low-carbon, durable, healthy and long-lasting material option — but they're only truly sustainable when specified thoughtfully. Tiles and ceramic finishes can last a lifetime when chosen well — making them one of the more naturally sustainable material choices available. (biid, 2026)
Chemicals in Everyday Products
This is one that surprises clients most. Many everyday materials contain harmful chemicals, and the goal is to specify safer, low-toxicity, transparent and responsibly sourced products that protect installers, occupants and the wider environment. From formaldehyde in some composite wood products to flame retardants in upholstery foams, there are chemicals present in many standard building and furnishing materials that are worth being aware of and, where possible, avoiding. (biid, 2026)
The Bigger Picture — Beyond Individual Materials
Sustainable design isn't just about what things are made of. The choices we make when specifying products and materials can have wide-ranging environmental and social impacts. Here are some of the broader considerations we keep in mind:
The Circular Economy
This is the principle of designing out waste — choosing products that can be repaired, repurposed, recycled or composted rather than simply thrown away at the end of their useful life. It's one of the reasons we so often recommend investing in quality over quantity, and why we encourage clients to think about the longevity of their choices from the very beginning of a project.
Traceability
Do we know where this product came from? Who made it, and under what conditions? Traceability is about being able to answer those questions honestly — and it matters both environmentally and ethically. We increasingly ask our suppliers for this kind of transparency, and the better ones are very willing to provide it.
Social Impact
Sustainable design isn't only about the planet — it's also about people. That means thinking about the labour practices behind the products we specify, supporting makers and manufacturers who treat their workers fairly, and where possible choosing locally made products that support our own communities and reduce transportation emissions.
Energy
The energy efficiency of a home is influenced by far more than the boiler and the insulation. Lighting choices, window treatments, and the thermal properties of flooring and wall finishes all play a role. We think about this as part of our design process — good curtains and blinds, for example, can make a meaningful difference to heat retention in winter.
Water
Water efficiency matters more than many people realise, particularly in bathroom and kitchen projects. Specifying water-efficient fittings and considering the water footprint of materials during manufacture are both part of responsible design.
What This Looks Like in Practice
The good news is that none of this requires compromise on beauty, quality or comfort. In fact, I have found consistently that the most sustainable choices — reclaimed timber, natural fibres, low VOC finishes, well-made pieces built to last — are almost always the most beautiful ones too. Sustainability and timeless design are natural companions.
It also doesn't have to mean doing everything at once. On every project we work through the choices available, explain the options and their implications, and help clients make decisions that feel right for them — whether that's one small sustainable swap or a whole-project commitment to responsible specifying.
If you'd like to talk about how we approach sustainability in our projects, or if you're thinking about a project and want to make sure it's as considered as possible, I'd love to hear from you.
Get in touch for a complimentary discovery call — it's the perfect place to start.
Eleni Fantis — Principal Designer, Omorfia Interior Design
Serving clients across Northamptonshire, Bedfordshire, Cambridgeshire and Hertfordshire
Source: BIID Responsible Specifying Toolkit — biid.org.uk/resources/responsible-specifying-toolkit