Some homes can't reasonably reach C. The 2030 rules include exemptions for these cases, which you register on the PRS Exemptions Register. An exemption isn't automatic: you need to qualify and register it.
| Exemption | When it applies | Lasts |
|---|---|---|
| Cost cap | You've spent £10,000, or the next measure would take you over it | 10 years |
| Low-value property | Cap is 10% of value where that's under £10,000 (homes worth under £100,000) | 10 years |
| Negative impact | A measure would damage the property or reduce its value by about 5% or more | 10 years |
| High cost | Even the cheapest recommended measure costs more than the cap | 5 years |
| All improvements made | Everything relevant has been done and it's still below C | 5 years |
| Consent refused | A tenant, freeholder or planning authority won't agree | 5 years or the tenancy |
| New landlord | You bought the home with a tenant already in it | 6 months |
Evidence
Guidance for the new regime hasn't been published yet. Under today's rules, landlords typically need three installer quotes for a high-cost exemption, a RICS surveyor's report for a loss of value, and copies of correspondence where consent was refused. Expect something similar.
Keep invoices and EPCs for every improvement from 1 October 2025. They're your proof of spend towards the cap, and your dashboard will help you track them.
False or misleading information on the register can be penalised up to £30,000 under the new rules.
Sources
- Government response: improving the energy performance of privately rented homes (Jan 2026)
- GOV.UK: Domestic private rented property minimum standard, landlord guidance
Guidance only, not legal or financial advice.
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