Sustainable Living When You Rent

Renting makes sustainability awkward. You can't insulate a loft you don't own, you can't put solar on someone else's roof, and the thing making your flat expensive to heat is usually a wall you're not allowed to touch.

So this splits into two lists: what you can do yourself, and what to push your landlord on. The second list is getting stronger, because the minimum energy standard for rented homes is going up.

The short version

• Ventilation and heating habits do more than any gadget.
• Removable improvements need no permission and come with you.
• The minimum EPC rises to C by 1 October 2030, with a cost cap of £10,000 per property.
• Below EPC E, a property generally shouldn't be let at all right now.

Start with the EPC

Free, public, and it tells you what you're dealing with.

Look your address up on the government's EPC register by postcode. It gives you the current rating, the potential rating, and a list of the specific improvements that would get it there, with rough costs.

That list is the single most useful thing for a conversation with a landlord, because it's not your opinion. It's an official assessment of what the property needs, and it usually names cheap wins like loft insulation or a hot water cylinder jacket alongside the expensive ones.

Habits, which are free

Unglamorous and genuinely effective.

• Heat rooms you use, turning thermostatic valves down in unused ones without turning them fully off. A completely cold room grows mould, and the damage costs more than the heating saved.
• Low steady heat rather than short blasts, which also reduces condensation.
• Ventilate briefly and widely. Five to ten minutes with a window wide open beats an hour ajar, because you exchange the air without chilling the walls.
• Run extractor fans during and after showering and cooking, door shut.
• Close curtains at dusk, and open them on sunny days.
• Wash at 30 degrees, run full loads, and dry outside where you can.
• Submit real meter readings, so bills aren't based on estimates that drift upwards.

Removable improvements

Everything here comes with you when you leave and needs no permission.

• Draught excluders at external doors and doors to unheated rooms
• Self-adhesive foam strips around frames, testing a small patch on painted surfaces first
• Letterbox and keyhole covers
• Secondary glazing film, the shrink-fit kind, which is genuinely effective on single glazing and peels off in spring
• Radiator reflector panels on external walls
• Thermal or lined curtains, hung clear of the radiator
• Rugs on hard floors in ground floor rooms
• LED bulbs, keeping the originals to put back
• Smart plugs and a plug-in energy monitor, to find what's actually costing you
• A water-efficient shower head, keeping the original
• A hot water cylinder jacket, if there's an uninsulated tank

One thing not to do: never block airbricks or trickle vents. It's the most tempting draught-proofing of all and it converts a cold room into a damp one.

What to ask your landlord for

Split these by cost, because the cheap ones often just get done.

Cheap, and worth asking about directly:

• Loft insulation topped up to current standards, which is one of the best returns available
• Pipe lagging in the loft and unheated spaces
• A hot water cylinder jacket
• Thermostatic radiator valves
• A working programmable thermostat
• Extractor fans that actually extract
• Draught-proofing the loft hatch

Larger, and worth raising with the EPC recommendations attached:

• Double or replacement glazing, particularly where units have failed and misted
• A modern efficient boiler, especially one past its expected life
• Cavity or solid wall insulation
• Underfloor insulation

How to ask: in writing, referencing the EPC recommendation, and framing it as what it is, an improvement to their asset that also reduces the risk of damp. Point out that the standard is going up. If a landlord won't act.

The standard that's rising

This is the part worth knowing, because it changes the conversation.

Right now, a property generally can't be let with an EPC below E, subject to exemptions on a public register.

The government has confirmed that the minimum standard for privately rented homes in England and Wales will rise to the equivalent of EPC C, with a single compliance date of 1 October 2030, and a cost cap of up to £10,000 per property. The regulations to implement it are expected to come into force in 2027.

So a landlord with an EPC D or E property has a deadline and a defined budget. Raising an improvement now, rather than in 2029, is a reasonable thing to do and lands better than it used to.

Damp is an efficiency problem

Worth connecting, because they're usually treated separately and they're the same issue.

Government guidance identifies the causes of damp and mould as building deficiencies, inadequate ventilation, inadequate heating and poor energy efficiency, and is explicit that blaming it on "lifestyle choices" is unreasonable.

A poorly insulated home is cold, a cold home has cold surfaces, and cold surfaces grow mould. So an insulation request and a damp report are the same conversation, and putting them together makes both stronger. Damp and mould.

Water

Cheaper and easier than energy in a rental.

• Ask about a water meter if you're not on one, since a small household usually pays less. Your landlord's permission may be needed.
• Report dripping taps and running toilets. A running loo wastes a startling amount and it's a repair.
• Fit a water-efficient shower head, keeping the original.
• Ask your water company for a free water-saving pack, which most of them provide.
• A water butt, if there's a garden and the landlord agrees.

Waste, and the bit renters actually control

• Check your council's rules, which vary enormously, and get the right bins if they're missing. Councils supply them.
• Food waste collection is now widespread. Use it if it exists, because food in general waste is a large share of household emissions.
• Buy less furniture, better. Second-hand furniture in rentals is both cheaper and far lower impact, and it moves better than flat-pack.
• Repair before replacing, and use a local repair café if there is one.
• Don't throw away what the next tenant could use. Local giveaway groups clear a flat faster than a tip run.

Switching supplier

In most tenancies you choose your own energy supplier, and a clause requiring you to stay with a particular one is generally unenforceable. Check your agreement, tell your landlord if you're switching, and note that some prepayment or landlord-billed arrangements work differently.

Green tariffs vary a lot in what they actually mean. Look for suppliers who generate or directly buy renewable power rather than only buying certificates.

The honest summary

Look up the EPC first, because it tells you what the property needs and gives you something official to point at.

Do the free habits and the removable improvements, which are worth more than they sound. Then ask for the cheap fixed ones, and raise the bigger ones knowing the minimum standard rises to EPC C by 1 October 2030 with a £10,000 cap.

And review the property when you leave, including how it actually performed. An EPC is a model. Someone who spent two winters there is data.

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This guide covers England and reflects the position at August 2026. Wales, Scotland and Northern Ireland differ. General information rather than legal advice. Sources: GOV.UK, domestic private rented property minimum energy efficiency standard, GOV.UK, improving the energy performance of privately rented homes: government response, GOV.UK, find an energy certificate.