Why it matters
What EPC C Proposal means for a landlord
The band C requirement is the largest capital cost on the horizon for many landlords. It is now confirmed policy, though not yet law: every privately rented home is to meet the new band C standard by 1 October 2030, with a cost cap of £10,000 per property, or 10% of the value for homes worth less than £100,000. The regulations are still to be made. Money spent on qualifying work from 1 October 2025 counts towards the cap, and grants count too, except the Boiler Upgrade Scheme. The regulations are aimed for 2027, and the planned maximum penalty of £30,000 needs a new Act. The sensible approach is to get an assessment now and phase the work alongside planned replacements of boilers, windows and insulation.
Worked example
How it plays out
Eleanor’s 1970s semi in Swindon is rated D. An assessor recommends cavity wall insulation, a loft top-up and heating controls for about £6,500, which should reach C. She has the work done in spring 2026 and keeps the invoices with the new EPC. If the work had fallen short of C, the money spent since 1 October 2025 would already count towards the £10,000 cap.
Common mistakes
Where landlords go wrong
- 01Waiting for the regulations before planning, when the deadline and cost cap are already confirmed policy.
- 02Throwing away invoices for energy work done since 1 October 2025, which count towards the cap.
- 03Counting a Boiler Upgrade Scheme grant as spending towards the cap, which it is not.
- 04Assuming a band C EPC lasts forever: one issued before 1 October 2029 counts only until it expires.
What to do
A short checklist
- Get a current EPC and its recommendations for each property below C.
- Price the recommended measures against the £10,000 cap.
- Keep every invoice for energy work from 1 October 2025.
- Check grants, such as ECO4 before it ends on 31 December 2026, or the Boiler Upgrade Scheme.
Sources
Checked against these sources on 16 September 2026. A guide to the rules in England, not legal advice: for a dispute or a possession claim, speak to a solicitor.
