Sustainable living in the city

City life is often unfairly dismissed as the unsustainable option. In reality, dense urban living has a lower per-person carbon footprint than suburban or rural life in most countries — largely because residents drive less and share heating infrastructure. The gains are there; these sections help you claim them.

Make the most of city advantages

Before tackling individual habits, it's worth recognising the structural sustainability built into cities. These are advantages you already have — using them fully is the first step.

• Walkability. Most errands in a city are reachable on foot. A 15-minute walk replaces a car journey, a parking fee and the emissions that go with both. Building walking into daily life is one of the highest-impact, zero-cost changes available.
• Dense transit networks. A full bus or train moves dozens of people per unit of energy. City transit is rarely perfect, but using it instead of a private car typically cuts transport emissions by 50–80% per journey.
• Shared infrastructure. Apartment buildings share walls, roofs and often heating systems — less surface area exposed to cold weather means less energy lost per household compared with a detached house.
• Sharing culture. Cities concentrate people, which makes sharing practical. Libraries, tool libraries, community food hubs, repair cafés and clothes swaps are all easier to run and access when population density is high.
• Less land use per person. Urban residents use less land than rural or suburban ones, leaving more room for forests, farmland and wild habitats.

Energy & comfort in flats and apartments

Many city residents are renters with limited control over their building. But there is still plenty you can do without asking permission — and a few things worth asking about.

• Draught-proofing is renter-friendly and cheap. Self-adhesive foam or brush strips around doors and windows are removable, cost very little, and can make a flat noticeably warmer. A draught excluder at the bottom of an external door is even simpler.
• Switch to LED bulbs. Most landlords will not object. Keep the original bulbs in a box and swap them back when you leave. LEDs use a fraction of the energy of older bulbs and last years.
• Use the thermostat and timer well. Heat only when you're home and awake. Dropping the temperature by 1°C saves energy noticeably. If your building has radiator valves (TRVs), turn down rooms you're not using.
• Reduce standby waste. A switched power strip turns off a TV, streaming box and games console in one click, eliminating power draw through the night.
• Talk to your landlord. Some improvements benefit landlords directly — better energy ratings, reduced complaints, longer-term tenants. Draught-proofing, loft insulation and switching to a green energy tariff are all worth raising, especially if you can share the cost information.
• Switch your energy tariff. In many countries, tenants can choose their own energy supplier and opt for a tariff sourced from renewable generation. This does not require landlord permission.

Small-space food & composting

No garden is not the same as no options. City residents can grow meaningful amounts of food and keep virtually all kitchen scraps out of landfill.

• Windowsill herbs. Basil, mint, parsley, chives and coriander grow happily on a sunny windowsill in small pots. Fresh herbs from a window cost less than supermarket packets and produce no plastic waste.
• Balcony containers. A south-facing balcony can support deep pots of tomatoes, courgettes (zucchini), salad leaves, radishes, spring onions and chilli plants. Grow bags take up minimal room. Even a few metres of balcony railing can hold window boxes.
• Allotments and community gardens. Many cities have council allotment plots available to rent cheaply. Waiting lists exist in popular areas, but they do move — get your name on one and explore community garden projects in the meantime.
• Bokashi composting. A bokashi bin is a sealed, airtight container about the size of a kitchen bin. You add all food waste — including cooked food, meat and dairy — sprinkle in a small amount of bokashi bran, and it ferments anaerobically with no odour. After two weeks the fermented material can go to an outdoor composter, a community drop-off, or buried in a planter.
• Worm bins (vermicomposting). A properly managed worm bin kept at room temperature has no smell and produces excellent liquid fertiliser. Purpose-built stacking bins fit neatly under a kitchen counter.
• Council food waste collections. Most urban councils now collect food waste separately. If yours does, use it — this is the simplest composting available to flat dwellers.

Transport without a car

Transport is often the biggest single slice of an individual's carbon footprint. In cities, most of it is avoidable or replaceable with lower-emission options.

• Walk short trips. Trips under 20 minutes on foot are often genuinely quicker door-to-door than driving, once parking is included. Walking also has health benefits that compound over time.
• Cycle for the middle ground. A standard or e-bike covers 3–10 km comfortably and is faster than a bus in congested cities. Cargo bikes and e-bikes extend range and carrying capacity significantly.
• Use public transit for longer trips. Know your city's network well — apps, day passes and off-peak times all reduce friction and cost. Combining transit with a short cycle or walk at each end solves most urban journeys.
• Car-share instead of car ownership. City car-share schemes (hourly or daily rental from dedicated bays) are often cheaper than owning a car once you factor in insurance, parking and maintenance. Use one when you genuinely need a vehicle for occasional trips.
• Question every car booking. Before hiring or borrowing a car, check whether transit, cycling or a quick taxi for an awkward load would work. Often it does.

For detailed guidance on low-emission travel, see our transportation guide.

Waste & shopping in the city

Cities concentrate shops, which means access to bulk, refill and secondhand options that are harder to find in rural areas. Use that access.

• Bulk and refill shops. Many cities now have shops where you bring your own containers and fill them with dry goods (grains, pasta, nuts, seeds, coffee, cleaning products). This removes packaging at source, which is more effective than recycling.
• Swap events and clothes exchanges. Organised swaps — for clothes, books, homewares — let you pass on things you no longer need and pick up things you do, at no cost. Search for local Facebook groups, community centre events or repair cafés that host them.
• Secondhand first. Charity shops, vintage stores, local selling apps (Vinted, Depop, Facebook Marketplace) and council reuse centres often have exactly what you need. Buying secondhand avoids manufacturing emissions and saves money.
• Libraries of things. An increasing number of cities run tool libraries, toy libraries and equipment libraries — you borrow a drill, a party gazebo or a sewing machine rather than buying one. Find your nearest at a community centre or search online for your area.
• Reduce packaging in everyday shops. Choose loose fruit and veg over pre-wrapped where available, buy staples in larger quantities to reduce pack count, and carry a reusable bag so plastic bags are never the default.

Community & green space

Sustainability in cities is partly a collective project. Individual actions matter more when they connect to neighbourhood-scale ones.

• Community gardens and growing projects. These provide food, green space, social connection and habitat for pollinators — all at once. Joining or volunteering at one is a practical way to grow food and meet neighbours.
• Repair cafés and skill-sharing. Cities typically have repair cafés where volunteers help fix clothes, electronics, bicycles and household items. Going builds skills, extends the life of things, and keeps them out of landfill.
• Green space. Parks, urban nature reserves and canal towpaths benefit everyone and support urban biodiversity. Using and advocating for them — through local council meetings or volunteering with conservation groups — helps keep them funded and well-maintained.
• Building-level initiatives. Shared composting, bulk buying groups, cycling storage lobbying and communal solar panels become more viable when a group of flat neighbours organises together. A WhatsApp group is often the starting point.

Your easy wins checklist

• Walk or cycle your next errand instead of taking a car or taxi.
• Fit a draught excluder to your most draughty external door this week.
• Put a pot of herbs on your windowsill — start with mint or basil.
• Set up a food waste system: bokashi bin, worm bin, or use the council collection.
• Find your nearest bulk or refill shop and try it for one item.
• Check whether a library of things, repair café or clothes swap exists near you.
• Switch TV and consoles off at the wall using a power strip.