Around 16% of the UK’s carbon emissions come from domestic properties, according to research cited by Lloyds Bank. That figure covers every home in the country, including the millions of flats and apartments rented out across Britain. For tenants, that statistic can feel distant — something for landlords and policymakers to sort out. But the reality is that the people living inside those properties have more control over their environmental impact than they often realise.
I’ve spent years writing about the UK rental market, and one pattern keeps coming up: tenants assume they can’t do much about sustainability because they don’t own the building. That assumption costs them money and misses real opportunities to cut bills and live more comfortably. The truth is that small changes — from the lightbulbs you choose to how you manage your heating — add up to meaningful savings and a lower carbon footprint. Here’s what you actually need to know.
If you’re renting, you might also want to check your understanding of utilities included in your lease — knowing what you’re actually paying for is the first step to cutting waste. And if your landlord hasn’t upgraded the property’s energy performance, a carbon monoxide alarm is a sensible safety addition that also helps you monitor indoor air quality.
What Sustainable Renting Actually Means for You
Sustainable renting isn’t about installing solar panels or replacing boilers — those are the landlord’s job. It’s about the choices you make day to day that reduce waste, save energy, and make your home more comfortable. The term you’ll hear most often is Energy Performance Certificate, or EPC.
Your EPC rating tells you how much you’re likely to spend on heating and electricity. A property rated D or below will cost more to run than one rated B or C. If you’re looking for a new place, checking the EPC before you sign can save you hundreds of pounds a year. I always tell renters to ask for the EPC upfront — it’s a legal requirement, and any landlord who hesitates is a red flag. For more on what to look for in a lease, read our guide on understanding UK tenancy agreements.
Why Your Apartment’s Energy Performance Matters Right Now
The UK government has set a target to reach net zero by 2050, and rental properties are a big part of that plan. Under the current Minimum Energy Efficiency Standards (MEES), landlords cannot let a property with an EPC rating below E unless they’ve registered an exemption. The penalty for non-compliance can be up to £5,000. But the bigger change is coming: from 2025, the minimum EPC rating for new tenancies is expected to rise to C.
That shift matters for tenants because it means landlords will need to upgrade their properties — better insulation, more efficient heating, double glazing. If you’re renting now, you might see improvements over the next couple of years. But if your current flat has an EPC rating of D or E, you’re likely paying more for energy than you should be. A survey found that only 13% of landlords believe their rental property is as environmentally friendly as it could be, so there’s plenty of room for improvement.
Consider this scenario: you live in a flat built before 1965 — which covers 56% of the UK’s privately rented housing stock. The windows are single-glazed, the loft insulation is thin, and the boiler is over a decade old. Your heating bills in winter are consistently high. You can’t replace the boiler yourself, but you can use a smart thermostat to schedule heating around your actual routine, draught-proof the windows with removable strips, and switch to LED bulbs. Those changes alone can cut your energy use noticeably. What I’d do in that situation is start with the thermostat — it’s the single biggest lever you have as a tenant.
If you’re thinking about your next rental, the future of British renting includes more flexible tenancy agreements, which could make it easier to move to a more energy-efficient property when the time is right.
Where Most Renters Get It Wrong
I’ve seen the same mistakes come up again and again. They’re not about laziness — they’re about not knowing what’s possible in a rented home. Here are the four most common ones, and how to avoid each.
Assuming You Can’t Change Anything
Many tenants believe that because they don’t own the property, they can’t make any improvements. That’s not true. You can replace lightbulbs, install smart plugs, use draught excluders, and fit removable window film — all without damaging the property or needing permission. The key is to focus on changes that are reversible and don’t alter the fabric of the building. A Wi-Fi water leak detector, for example, sits on the floor and alerts your phone if it detects moisture — no drilling, no wiring, and it can prevent expensive water damage that your landlord would otherwise have to fix.
Ignoring the EPC Before Signing
Your EPC rating directly affects your monthly bills. A property rated G costs roughly three times as much to heat as one rated C. Yet many renters never ask to see the certificate before they move in. Under MEES regulations, the landlord must provide it. If they don’t, or if the rating is below E, you have grounds to challenge the tenancy. Checking the EPC before you sign is one of the simplest ways to avoid high energy costs. If you’re already in a property with a low rating, you can ask your landlord about improvements — and point out that the 2025 minimum C rating means they’ll need to upgrade eventually anyway.
Overlooking Water Waste
A dripping tap can waste hundreds of litres of water per year. A leaking toilet can waste even more. Most tenants don’t notice because the cost is spread across their water bill, but the waste is real — and it’s completely avoidable. Report leaks to your landlord as soon as you spot them. If the landlord is slow to respond, a simple fix like replacing a washer costs a few pounds and takes minutes. For toilets, a drop of food colouring in the cistern will show you if there’s a leak: if colour appears in the bowl without flushing, the seal needs replacing.
Using Inefficient Appliances and Lighting
If your flat came with a fridge, washing machine, or dishwasher, check the energy label. Appliances rated A or better under the UK energy labelling scheme use significantly less electricity than older models. If your landlord supplied the appliances, you can ask them to consider upgrading when replacements are needed. For lighting, swapping old bulbs for LEDs is the easiest win: LEDs use up to 90% less energy and last years longer. A pack of LED bulbs costs around £10 and can pay for itself in a few months.
| Upgrade | Typical Cost (DIY) | Annual Saving (Est.) |
|---|---|---|
| LED bulbs (whole flat) | £10–£20 | £30–£50 |
| Smart thermostat | £50–£150 | £50–£80 |
| Draught-proofing strips | £10–£30 | £25–£40 |
| Removable window film | £15–£40 | £20–£35 |
If you’re renting with pets, you might also want to read our guide on renting with pets in the UK — some eco-friendly changes, like low-VOC paints, are especially important for animal health.
How to Make Your Rental More Sustainable — A Practical Guide
Writing about topics like this takes real time and research. If you buy something through an Amazon link on this page, I may earn a small commission — at no extra cost to you. It’s one of the things that makes it possible to keep BritWealth free to read. I only link to products that are genuinely relevant to the article.
Here’s the step-by-step approach I’d take if I were renting a flat today. These actions are ordered from easiest to most impactful, so you can start with what’s quick and build from there.
Switch to LED Lighting Throughout
This is the single easiest change you can make. LEDs use up to 90% less energy than traditional incandescent bulbs and last up to 25 times longer. Replace every bulb in your flat — including those in lamps, ceiling fixtures, and appliances. Keep the old bulbs in a drawer so you can put them back when you move out. A pack of LED lightbulbs costs about £10 and will save you money within months. If your flat has spotlights or unusual fittings, check the cap type before buying.
Install a Smart Thermostat (With Permission)
Smart thermostats like those from Hive, Nest, or Tado let you control your heating remotely and schedule it around your routine. Industry estimates suggest they can cut heating bills by up to 10%. Most models are designed for DIY installation and don’t require rewiring, but you should ask your landlord first — most will say yes if you offer to leave it when you move out. The process is straightforward: replace your existing thermostat with the smart unit, download the app, and set your schedule. If your landlord is hesitant, point out that it adds value to the property and makes it more attractive to future tenants.
Reduce Water Waste
Check every tap and toilet for leaks. A slow drip can waste over 100 litres a week. For taps, replacing a rubber washer costs pennies and takes five minutes with a spanner. For toilets, the food colouring test will tell you if the flush valve needs replacing. If you’re not comfortable doing the repair yourself, report it to your landlord in writing — they’re responsible for maintaining the plumbing. In the meantime, fit a water-saving shower head to reduce flow without losing pressure. These cost around £15 and can cut your hot water usage by up to 40%.
Use Low-VOC Paints and Cleaning Products
If you’re allowed to redecorate, choose low-VOC (volatile organic compound) paints. Standard paints release chemicals into the air for weeks after application, which can trigger headaches, allergies, and respiratory issues. Low-VOC options are widely available at the same price point and dry just as well. For cleaning, switch to eco-friendly products or make your own using vinegar, baking soda, and lemon juice. These are cheaper, non-toxic, and just as effective on most surfaces.
Understand the Upcoming EPC Changes
From 2025, the minimum EPC rating for new tenancies is expected to rise from E to C. That means landlords will need to upgrade their properties — better insulation, double glazing, more efficient heating. If your current flat has a low EPC rating, you have leverage: you can ask your landlord to make improvements now, knowing they’ll have to do it eventually anyway. The government’s Boiler Upgrade Scheme offers grants of £5,000–£6,000 for heat pump installations, and the ECO4 scheme supports insulation and heating upgrades for eligible homes. Your landlord may not know about these — sharing the information can help both of you.
- 1Check your EPC ratingFind it on the government’s EPC register using your postcode. If you don’t have one, ask your landlord — it’s a legal requirement.
- 2Replace all bulbs with LEDsBuy a mixed pack of LED bulbs for your fittings. Keep the old bulbs to reinstall when you move out.
- 3Install a smart thermostatAsk your landlord for permission. Most will agree if you offer to leave the device. Follow the app instructions to set a heating schedule.
- 4Fix leaks and fit water-saving devicesReport leaks to your landlord. Fit a water-saving shower head and use the food colouring test to check your toilet.
- 5Switch to eco-friendly cleaningReplace chemical cleaners with vinegar, baking soda, and low-VOC products. It’s cheaper and better for indoor air quality.
For more on the costs you might not have considered, read about the UK’s most overlooked renting cost — it’s directly related to energy efficiency.
Frequently Asked Questions
Can my landlord force me to pay for energy efficiency upgrades? ▾
What if my flat has an EPC rating below E? ▾
Do smart thermostats work in flats with communal heating? ▾
Will switching to LEDs really save me money? ▾
Can I install solar panels in a rented flat? ▾
What should I do if my landlord refuses to fix a leak? ▾
If this was useful, you might also want to read Essential Tips for Finding the Perfect Apartment on Facebook Marketplace UK.
Sources and Further Reading
Essential Tips for Understanding Ground Rent in the UK — A clear breakdown of ground rent rules and how they affect your tenancy.
Student Accommodation Alternatives: Finding Affordable Housing Post-Graduation — Practical advice for recent graduates navigating the rental market.
Sustainable Property Management for UK Landlords: Eco-Friendly Tips. Tenant Screening, 2024.
Tips for Creating an Eco-Friendly Rental Property. LandlordVision, 2024.
Sustainable Energy Solutions for Urban UK Apartments. Fast Solar UK, 2024.
