By the UKPropertyCalculator team • Published 27 September 2026
There is more confusion among landlords about EPC rules than almost any other topic right now, and most of it is a year out of date. Plenty of people still believe the EPC C plan died with Rishi Sunak in 2023. Plenty more think it came back as a vague aspiration that will quietly slip. Both were reasonable readings in 2025. Neither survives the government response of 21 January 2026, which put a hard date on it: 1 October 2030.
This article covers what the law requires today, what was actually confirmed in January, what the new standard will measure (it is no longer simply a letter on a certificate), what upgrading costs, which grants are closing, and what exemptions exist. I have written it for landlords who own individual properties, not for portfolio businesses with compliance teams.
An Energy Performance Certificate rates a home's energy efficiency from A (most efficient) to G. Under the current methodology an accredited domestic energy assessor produces a score out of 100 — the Energy Efficiency Rating, or EER — and the score maps to a band:
| Band | Score | What it typically looks like |
|---|---|---|
| A | 92–100 | Passivhaus, or new-build with solar and a heat pump |
| B | 81–91 | Modern new-build, post-2010 |
| C | 69–80 | Well-insulated older property, modern boiler, double glazing |
| D | 55–68 | 1970s–1990s semi with some but not all improvements |
| E | 39–54 | Older property, partial insulation, ageing heating system |
| F | 21–38 | Pre-1920 solid-wall property with little modernisation |
| G | 1–20 | Unimproved older property — increasingly rare in the rental market |
The boundary that matters is the bottom of band C, which MHCLG puts at a score of 68.5 or higher. If your certificate says 68, you are a D.
EPCs are valid for 10 years. The most common mistake I see is a landlord relying on a certificate from 2014 that predates loft insulation they have since fitted. If you have done work since your last assessment, commission a fresh one — the recommendations report is also the cheapest piece of planning you will buy. There is no official price for an EPC: GOV.UK simply says "the cost of an assessment varies by assessor and the size of the property," and assessors set their own fees. In practice, quotes for a standard three-bedroom house tend to land somewhere around £60 to £120, with flats cheaper, large or unusual properties considerably more, and London pricing at the top of any range. Treat that as a market observation rather than a published figure — get two or three quotes through GOV.UK's Get a new energy certificate service.
The Minimum Energy Efficiency Standards come from the Energy Efficiency (Private Rented Property) (England and Wales) Regulations 2015. The domestic timeline is short and frequently misremembered:
So if you have a long-standing tenant and an F or G rated house, you are not waiting for 2030. You have been in breach since April 2020, and enforcement sits with your local authority.
GOV.UK's landlord guidance sets these out precisely, and they stack:
| Breach | Maximum penalty |
|---|---|
| Letting a non-compliant property for less than 3 months | £2,000 and/or publication |
| Letting a non-compliant property for 3 months or more | £4,000 and/or publication |
| False or misleading information on the PRS Exemptions Register | £1,000 and/or publication |
| Failing to comply with a compliance notice | £2,000 and/or publication |
| Total cap per property | £5,000 |
"Publication" means the local authority can name you and the property on the exemptions register. For a landlord who also wants to remortgage or sell, that is often the more expensive half of the penalty.
In 2021 the Conservative government proposed EPC C for new tenancies by 2025 and all tenancies by 2028. Landlord bodies called it undeliverable, given the shortage of assessors and installers and the cost of upgrading solid-walled Victorian stock. In September 2023 Sunak scrapped the target outright, as part of a broader softening of net-zero commitments.
Labour revived it after the July 2024 election. The consultation, Improving the energy performance of privately rented homes, ran from February to May 2025. The government response landed on 21 January 2026, the same day as the Warm Homes Plan. What it confirmed:
The honest caveat: the statutory instrument has not yet been laid, and detail can still move between a government response and final regulations. But "the policy might be watered down" is a different proposition from "it is only a proposal." The date, the cap and the metric are all now on the record.
This is the part most coverage skips. The 2030 standard is not simply "score 69 or above." It is a dual-metric requirement:
Practically, that means fabric first. Money spent on insulation counts towards the part of the test you cannot avoid; a heat pump on its own will not get you there. There is also a sensible carve-out: a property that cannot take any recommended smart-readiness measure will not then be forced down the heating-system route instead.
The English Housing Survey, published by MHCLG, is the source worth quoting. Its 2024 to 2025 headline findings on housing quality and energy efficiency (published 29 January 2026) give this distribution for privately rented dwellings in 2024:
| EER band | Share of private rented dwellings (2024) |
|---|---|
| A/B | 3% |
| C | 48% |
| D | 37% |
| E | 9% |
| F/G | the remainder — roughly 3% |
So 51% are already at C or above, leaving about 49% below it. That is slightly better than most commentary suggests: the government's own options assessment, written on older data, used 55%. Band D fell from 43% in 2022 to 37% in 2024 while band C rose from 42% to 48%, so the sector is moving — just not fast enough to clear 49% of the stock in four years without a scramble.
The split matters more than the headline. The few per cent in F and G are in breach of the law today and should be treated as an emergency. The 37% in D are the real 2030 problem: legal now, non-compliant later, and competing for the same installers as everyone else.
Take a 1973 end-of-terrace in the East Midlands, currently rated D with a score of 62. Thin, settled loft insulation from decades ago, unfilled cavity walls, 20-year-old double glazing, a gas combi from around 2009, and a tenant who has been there seven years on a rolling contract. Under the current methodology, the recommendations report typically points at three measures:
| Improvement | Typical cost range | Points gained (approx) |
|---|---|---|
| Top up loft insulation to 270mm | £300–£600 | +3 to +5 |
| Cavity wall insulation | £700–£1,500 | +3 to +6 |
| Upgraded heating controls | £150–£400 | +1 to +2 |
| Total | ~£1,150–£2,500 | ~+7 to +13 |
That combination plausibly tips 62 into the high 60s and over the line. Two honest caveats. First, those are indicative market costs and indicative point gains, not a quotation — the only number that counts is the one your assessor's software produces for your property. Second, the arithmetic above is the current methodology; from October 2029 the same house is judged on fabric performance under the Home Energy Model instead. The good news is that this example is fabric-led anyway, which is exactly what the new primary metric rewards. Insulation is the safe bet under either system.
Now compare a solid-walled Edwardian mid-terrace, where there is no cavity to fill. External wall insulation runs from roughly £8,000 to £20,000 depending on size and material. Internal insulation is cheaper but eats room sizes and is genuinely disruptive for a sitting tenant. This is the category the £10,000 cap and the exemptions regime exist for, and it is where a number of landlords will rationally decide to sell instead.
You can stress-test what an upgrade bill does to your returns with our BTL Cash Flow Calculator. If a property is already marginal after Section 24 — and our Section 24 analysis found the average higher-rate deal is cash-flow negative in all 30 cities tested — a five-figure commitment changes the decision, not just the budget.
ECO4 is funded by the large energy suppliers under a government obligation, and delivers free or heavily subsidised insulation and heating to low-income households. As a landlord you are not income-tested; your tenant generally needs to qualify, usually through means-tested benefits. Where they do, cavity and loft insulation can cost you nothing.
Here is the part that changes your plans. ECO4 was due to end in March 2026; the government extended it by nine months, confirmed on 23 January 2026, to 31 December 2026. It then stops, and there is no successor supplier obligation — no ECO5, and no carry-over of unmet targets. Broader replacement funding is not expected before 2027/28.
In other words: if you have a D or E rated property with a benefits-eligible tenant, the free-insulation route closes in roughly three months. Advice you may have read last year about not leaving ECO4 until 2029 has been overtaken by events — the question now is whether you can get a surveyor booked before Christmas.
This is the replacement route, delivered by participating local authorities rather than by energy suppliers, and privately rented homes are eligible. The published criteria are England only, an EPC of D, E, F or G, and a household income generally under £36,000 — with higher earners potentially qualifying if they receive certain benefits or live in a listed postcode. Unlike ECO4, GOV.UK is explicit that this is not always free to the landlord: "if you have a landlord, they may need to pay for some of the improvements." The detailed co-funding rules sit in the policy guidance councils work to and vary in practice, so treat the split as something to establish with your own authority rather than assume. Start at GOV.UK's Warm Homes: Local Grant page, then check whether your council has funding left this year — it is allocated locally and does run out.
The BUS pays £7,500 towards an air source heat pump, £7,500 towards a ground source or water source heat pump, and £5,000 towards a biomass boiler. Landlords are eligible, not just owner-occupiers, and the grant is paid to the accredited installer and deducted from your bill.
Two things to know. First, the property needs to meet a basic insulation standard before you apply — the scheme exists to put heat pumps into well-insulated homes, not leaky ones. Sort fabric first; that is also what the 2030 primary metric wants. Second, and this is easy to miss: BUS grant money is the one form of third-party funding that does not count towards the £10,000 cost cap. Every other pot — Warm Homes: Local Grant, ECO4 — does count against it. That asymmetry is worth planning around, because a BUS-funded heat pump leaves your £10,000 allowance intact.
And heat pumps are not universally right. In a poorly insulated Victorian terrace, a heat pump can cost a tenant more to run than a well-maintained gas boiler, which is the opposite of the policy's intent. Read GOV.UK's BUS guidance and talk to an MCS-accredited installer before committing.
Not every property can reasonably comply, and the regulations accept that through a formal exemptions process. Under the current EPC E regime the exemptions are:
Under the 2030 regime the architecture survives but the numbers change: the cost cap becomes £10,000, and the cost cap, property-value and negative-impacts exemptions will last 10 years rather than five. Everything else stays at five years unless specified otherwise.
All exemptions must be registered on the PRS Exemptions Register via GOV.UK One Login, with evidence uploaded. Registering an inaccurate exemption is itself a penalty — up to £1,000, plus publication.
EPC costs do not arrive in isolation. Since Section 24 removed the ability to deduct mortgage interest from rental income, many individual higher-rate landlords are already cash-flow negative on an average deal — something we quantified in our Section 24 tax trap analysis using Land Registry prices and ONS rents. Drop a bill of £5,400 on average, and up to £10,000 at the cap, into that environment and some portfolios stop making sense.
The question for each property is narrow: does the required work justify the cost at the achievable rent? Sometimes yes — particularly where a grant covers most of it, or where the upgrade genuinely supports a rent review and cuts void risk. Sometimes no, especially for F and G rated solid-walled houses where the spend is disproportionate to the asset. For those, the honest calculation is whether to sell, and our buy-to-let ROI guide covers how to frame that comparison.
One closing thought. The cap is a ceiling on spend, not a get-out: you only reach an exemption after you have demonstrably spent up to it. Landlords who read "£10,000 cap" as "£10,000 optional" will find that out in 2030, when the installers are fully booked.
Check whether your rental still stacks up financially after an EPC upgrade.
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