- The deadline: under the government's January 2026 plans, all private tenancies in England and Wales must meet the new standard by 1 October 2030. There's no earlier date for new tenancies. It isn't law yet: regulations are due to be laid in 2027.
- The cost cap: you'll be required to spend up to £10,000 per property, including VAT and EPC fees. Homes worth under £100,000 are capped at 10% of their value. Government estimates the average spend at £5,400.
- Grants count toward the cap: ECO4 and Warm Homes: Local Grant funding count, and spend from 1 October 2025 counts. The £7,500 Boiler Upgrade Scheme grant does not.
- Use it or lose it: ECO4 ends 31 December 2026. The Warm Homes: Local Grant fully funds your first eligible rental and 50% of the rest, to March 2028.
- Already C? An EPC rated C before 1 October 2029 keeps you compliant until it expires. Check what your tenants could qualify for.
For years, landlords heard that EPC C was coming, then that it had been dropped, then that it was back. In January 2026 the government settled it. Alongside the Warm Homes Plan, it published its response on improving privately rented homes. That response sets the date, the cost cap and the exemptions (DESNZ government response, January 2026). This guide covers what was decided, which grants can pay for the work, and what reaching C actually costs.
For a broader list of schemes, see our energy grants for landlords hub. If you are a tenant, the Warm Homes: Local Grant for tenants and landlords explains your side.
The 2030 EPC C deadline for private landlords
Today's rule is unchanged. Since April 2020, a privately rented home in England and Wales must have an EPC of E or above to be let, unless a valid exemption is registered (GOV.UK MEES landlord guidance). That stays in force until the new standard bites.
The new standard, as confirmed in the government response:
- Deadline: 1 October 2030 for all tenancies. There won't be an earlier compliance date for new tenancies, which an earlier consultation had floated for 2028.
- Two metrics, not one. Landlords must meet a primary standard on a new fabric performance metric, covering insulation and the building itself. They must also meet a secondary standard on either a heating system metric or a smart readiness metric, and can choose which.
- Early-mover protection. A home rated C or above on the current Energy Efficiency Rating, on an EPC issued before 1 October 2029, counts as compliant until that EPC expires or is replaced.
- Not law yet. The government needs new powers through an Act of Parliament, then aims to lay regulations to come into force in 2027 (government response). Treat the detail as firm policy that could still be adjusted.
The practical upshot: if a rental is rated D today, getting it to C on a current-style EPC before October 2029 locks in compliance for up to ten years. Doing the work while ECO4 and the Warm Homes: Local Grant can still pay for it is the cheapest way there.
The £10,000 cost cap, exemptions and fines
| Rule | What the government response says |
|---|---|
| Cost cap | Up to £10,000 per property (including VAT) over a 10-year period, down from the £15,000 proposed in consultation |
| Average expected spend | £5,400 per property (impact assessment) |
| What counts | Spend on relevant measures installed from 1 October 2025, reasonable EPC costs, and third-party funding including government schemes such as ECO4 and the Warm Homes: Local Grant |
| What doesn't count | Boiler Upgrade Scheme grants, though you can still use BUS alongside your own money |
| Low-value homes | ‘Property value adjustment’ exemption: under £100,000, the cap is 10% of the property's value |
| If you hit the cap | Register a ‘cost cap’ exemption, valid 10 years, and keep letting |
| Other exemptions | High-cost, all-improvements-made, solid wall insulation, negative impacts, third-party consent, and a six-month new-landlord exemption |
| Fines | Up to £30,000 per property per breach |
Source: Improving the energy performance of privately rented homes: government response (DESNZ, January 2026). Applies to England and Wales.
The row that matters most is “what counts”. Because grant funding counts toward the cap, a £12,000 package funded through ECO4 or the Warm Homes: Local Grant could, once the regulations apply, cover your full cap obligation for that property, even if you paid little or nothing yourself. There's also a dedicated solid wall insulation exemption, which matters for Victorian terraces where SWI alone can exceed the cap.
Key dates for landlords
Grants landlords can use to reach EPC C
There are four live routes, and they have very different rules for rentals.
1. ECO4: ends 31 December 2026
ECO4 is the energy-supplier scheme and the biggest pot. For a privately rented home, Ofgem's rules are specific (Ofgem ECO4 Delivery Guidance v3.2, paras 3.74–3.82):
- The tenant must be eligible, through a qualifying means-tested benefit or a council LA Flex declaration.
- The home must start at EPC band E, F or G. Band D rentals are generally out of scope for ECO4.
- The package must include at least one of solid wall insulation, first-time central heating, a district heating connection or renewable heating (such as a heat pump), plus any other measures.
- A like-for-like boiler replacement is generally not eligible in rentals.
- You sign a landlord permission and blended funding declaration. Suppliers can ask landlords to contribute.
ECO4 was extended once, to 31 December 2026, and work must be completed by then. There will be no ECO5. Supplier funding is now limited, so start early. See our ECO4 guide.
2. Warm Homes: Local Grant (England, to March 2028)
- Your first eligible rental is fully funded. Every further property needs a 50% landlord contribution. Tenants never pay.
- The tenant household must qualify through one of three routes: income under £36,000, a qualifying benefit, or a listed deprived postcode.
- The home must be EPC D to G. Rentals rated F or G must already hold a registered MEES exemption, because grants can't fund what the law already requires.
- It's delivered by councils, not every council joined, and you'll complete a landlord declaration. See how to apply and GOV.UK.
3. Boiler Upgrade Scheme (England & Wales)
Landlords can claim £7,500 toward an air or ground source heat pump. That rises to £9,000 until March 2027 for homes on oil or LPG with no mains gas (GOV.UK). Rental properties are explicitly eligible (GOV.UK). BUS money doesn't count toward the cost cap, but a heat pump is the most direct way to satisfy the heating system metric. See our ground source and air source cost guides.
4. 0% VAT
Insulation, heat pumps, solar panels and batteries are zero-rated until 31 March 2027, when the rate is due to return to 5%. There's nothing to claim; installers apply it. See VAT relief.
Could your tenant's home be funded?
Grant eligibility depends on the household, not the landlord. Enter the rental's postcode to see which schemes run there. It's free and there's no obligation.
What it costs to reach EPC C
Most of the gap to C is fabric: walls, roof and floor. Here are national benchmarks for the most common upgrades, set against the £10,000 cap.
| Starting point | Typical route to C | Rough self-funded cost |
|---|---|---|
| 1990s+ semi or flat, rated D | LED lighting, loft top-up, heating controls | £500–£2,000 |
| 1930s–70s cavity-wall semi, rated D/E | Cavity wall + loft insulation, controls | £2,500–£4,000 |
| Off-gas cottage on electric heating, rated E/F | Insulation + air source heat pump (after BUS) | £6,000–£10,000 |
| Victorian solid-wall terrace, rated E/F | Loft, floor, glazing, possibly solar; SWI if affordable | £5,000–£10,000 (cap applies; SWI exemption available) |
Indicative. The right package depends on your new-style EPC recommendations and a survey. Grant funding can reduce what you pay to nothing for eligible properties.
Worked examples
A two-bed Victorian terrace in Leeds, rated E, tenant on Universal Credit
It's the landlord's only rental. The tenant's benefit qualifies the household for ECO4, and the E rating is inside ECO4's E–G band for rentals. Solid walls make internal wall insulation the anchor measure ECO4 requires. A typical package might cost £14,000, with internal wall insulation, loft top-up and ventilation.
If ECO4 funding can't be secured in time, the Warm Homes: Local Grant can fully fund this landlord's first rental. Either way, the work done now counts toward the 2030 cap, though only once the regulations come into force.
A landlord's third property: a 1960s cavity semi in Nottingham, rated D, tenant earning £28,000
The tenant earns under £36,000, so the household qualifies for the Warm Homes: Local Grant. ECO4 doesn't apply because the home is band D and the tenant isn't on benefits. This is the landlord's third Warm Homes property, so the 50% rule applies.
A cavity-wall semi rated D is often close to C, and this package may get it there. If the new EPC shows C before 1 October 2029, the property is compliant until that EPC expires.
A five-step plan for landlords
- Look up every EPC. Use the GOV.UK EPC register to note each rating, its numeric score and its expiry date. Homes already at C on a certificate issued before October 2029 can wait.
- Triage by distance to C. Ds are often one or two cheap measures away; Es and Fs need a proper plan.
- Check tenant eligibility now. ECO4 closes on 31 December 2026, and grants depend on your tenants' circumstances. Use the eligibility checker for each address.
- Prioritise your first Warm Homes property. It's fully funded, so use it on the most expensive job.
- Keep every invoice from 1 October 2025. Receipts, grant paperwork and EPCs are your evidence for the cap and any exemption.
Scotland, Wales and Northern Ireland
The 2030 EPC C plan covers England and Wales. Wales also has its own Warm Homes Nest scheme for eligible households. Scotland and Northern Ireland set their own rental energy standards. In Scotland, Home Energy Scotland offers support including loans for private landlords, and ECO4 also applies there until it closes. See our Scotland energy grants guide.
Get ahead of 2030 while the grants last
Check each rental against ECO4, the Warm Homes: Local Grant and council schemes in one pass.