EPC band C covers SAP scores from 69 to 80. It is not the current legal minimum for private rentals, but the government has proposed making it mandatory for all tenancies from 1 October 2030. EPCGuide's analysis of 29.2 million EPC records shows 55.4% of certificates in England and Wales are currently below band C, meaning more than half the private rented sector needs to act before that date if the proposal passes into law.
This guide explains what band C means, how it is assessed, and what landlords with D or E-rated properties need to do to reach it.
What Is an EPC C Rating?
An EPC C rating means the property scores between 69 and 80 on the Standard Assessment Procedure (SAP) scale. SAP runs from 1 (worst) to 100 (best). Band C sits in the upper-middle of the scale, above D, E, F and G, and below the B and A bands most new builds achieve.
| EPC Band | SAP Score | Status for Landlords |
|---|---|---|
| A | 92-100 | Compliant (above proposed 2030 target) |
| B | 81-91 | Compliant (above proposed 2030 target) |
| C | 69-80 | Proposed 2030 legal minimum |
| D | 55-68 | Compliant today, below proposed 2030 target |
| E | 39-54 | Current legal minimum, below proposed 2030 target |
| F | 21-38 | Illegal to let without exemption (current law) |
| G | 1-20 | Illegal to let without exemption (current law) |
A typical band C property has effective loft insulation, a modern boiler or heat pump, and cavity wall insulation where the construction type allows it. It is not the same as a near-perfect rating: band C still leaves room for improvement, but it represents a well-insulated, reasonably efficient home.
Can You Rent Out a Band C Property?
Yes, and without any restriction. Band C sits above the current legal minimum of band E under the Minimum Energy Efficiency Standards (MEES) Regulations (SI 2015/962). A band C property is fully compliant today. No exemption, no registration, no action required.
Under the government's proposal, band C also becomes the new legal floor from 1 October 2030. That means a band C landlord faces no cliff-edge: the property already meets both the current standard and the proposed future one.
MEES applies to England and Wales only. Scotland requires a minimum of band D now, with band C proposed as a Scottish target by the end of 2028. Northern Ireland has a separate framework. The Scottish EPC landlord guide and Northern Ireland guide cover those rules separately.
Why Does Band C Matter So Much?
Band C is the proposed legal target for the entire private rented sector by 2030. On 21 January 2026, the government published its response to the 2023 MEES consultation, confirming its intention to raise the minimum from band E to band C for all tenancies from 1 October 2030. The proposed rules also set:
- A £10,000 cost cap per property (proposed, not in force)
- A £30,000 maximum penalty for non-compliance (proposed, not in force)
- Eligibility of EPC improvements commissioned from 1 October 2025 toward the future cost cap
Those figures are proposals. Two steps must happen before they become law: an Act of Parliament (targeted for 2027, not yet introduced as a Bill) and a Statutory Instrument laid under it. The Renters Rights Act 2025 did not raise the penalty or change the EPC minimum. Band E remains the legal floor until Parliament acts.
Even so, reaching band C now has practical advantages. Work started today counts toward the future cost cap, and the ECO4 grant scheme, which can fund most of the cost for eligible properties, closes on 31 December 2026.
For the full 2030 timeline, see our EPC C 2030 deadline guide.
How Many Properties Are Below Band C?
EPCGuide's analysis of 29.2 million EPC records shows 55.4% of all EPC certificates in England and Wales are below band C. On a homes basis (counting only the most recent certificate per property), 49.6% of the 19.7 million assessed homes fall below C, which equals approximately 9.8 million properties.
The proportion varies sharply by geography. Isles of Scilly has 85.0% of certificates below C. Tower Hamlets has 24.9%, the lowest of any local authority in the dataset. This reflects both construction type and retrofit investment: dense urban areas with purpose-built flats and newer stock perform far better than rural areas with older, solid-walled housing.
For the breakdown by your local authority, see the EPCGuide research hub.
What Does It Cost to Reach Band C from Band D?
A band D property scores SAP 55-68. Reaching band C requires gaining 1-25 SAP points depending on where in the D band the property currently sits. For a property at the top of band D (SAP 68), a single targeted measure often closes the gap.
The most cost-effective improvements for D-rated properties:
| Improvement | Typical Cost | Typical SAP Uplift |
|---|---|---|
| Loft insulation (absent or under 100mm) | £300-£700 | +5-10 points |
| Cavity wall insulation | £600-£1,500 | +5-15 points |
| Heating controls (programmer, TRVs) | £100-£300 | +3-5 points |
| Hot water cylinder insulation jacket | £20-£50 | +1-3 points |
| LED lighting (partial) | £100-£250 | +1-2 points |
Cost and SAP uplift figures: Checkatrade and HomeEnergyCheck installer data 2026.
Many cavity-walled D-rated properties can reach band C for £1,000-£2,500. That is well within the proposed future cost cap and frequently below the current £3,500 MEES cost cap.
What Does It Cost to Reach Band C from Band E?
A band E property scores SAP 39-54. Reaching band C requires gaining 15-30 SAP points. Properties at SAP 54 need only 15 points; those at SAP 39 need 30, which typically requires two or more improvements.
| Improvement | Typical Cost | Typical SAP Uplift |
|---|---|---|
| Loft insulation (absent) | £300-£700 | +5-10 points |
| Cavity wall insulation | £600-£1,500 | +5-15 points |
| High-efficiency condensing boiler | £2,000-£4,000 | +8-15 points |
| Solid wall insulation (external) | £8,000-£22,000 | +10-25 points |
| Air source heat pump (with BUS grant) | £3,000-£5,000 net | +10-20 points |
Cavity-walled E-rated properties with absent loft insulation can often reach band C for under £3,500. Solid-walled E-rated properties face higher costs: external wall insulation is the most effective route but also the most expensive, and those properties may qualify for a cost cap exemption under the proposed 2030 rules if the work exceeds £10,000 and still cannot achieve C.
For a full breakdown, see our band E to C upgrade guide and cost to improve EPC rating guide.
Want the exact upgrade route for your specific property? Get your costed EPC C Action Plan for £29. In your inbox within the hour, then reviewed by a real person within 48 hours.
What Grants Are Available?
ECO4 (closes 31 December 2026). The Energy Company Obligation covers up to £14,000 per property for insulation and heating upgrades. Eligibility is tenant-gated: your tenant must receive qualifying benefits such as Universal Credit, Housing Benefit or Pension Credit. ECO4 can cover most or all of the cost of reaching band C for eligible properties. After 31 December 2026 the scheme closes, replaced by the Warm Homes Plan from 2027, though landlord eligibility for that plan is not yet confirmed. See the ECO4 landlord guide.
Boiler Upgrade Scheme (BUS). The £7,500 BUS grant applies to heat pump installation in England and Wales. Landlords are eligible. It is not means-tested. A heat pump in a well-insulated property typically delivers 10-20 SAP points and can be the decisive measure for a D or E-rated property trying to cross into band C. See the BUS landlord guide.
For the full grants picture, see our EPC grants for landlords guide.
Frequently Asked Questions
What SAP score is EPC band C? Band C covers SAP scores from 69 to 80. SAP runs from 1 (least efficient) to 100 (most efficient), as defined in the Standard Assessment Procedure published by the Building Research Establishment for the government. A score of 69 is the lowest point in band C; a score of 80 sits one point below band B.
Is band C the current legal minimum for landlords? No. The current legal minimum is band E under MEES (SI 2015/962). Band C is the government's proposed minimum from 1 October 2030. That proposal requires an Act of Parliament and a Statutory Instrument to become law, neither of which has been introduced yet.
What percentage of rental properties are below band C? EPCGuide's analysis of 29.2 million EPC records shows 55.4% of certificates in England and Wales are below band C. On a per-property basis, 49.6% of assessed homes (approximately 9.8 million properties) fall below C. Source: EPCGuide analysis of the August 2026 GOV.UK domestic EPC register.
How many SAP points do I need to gain to reach band C from D? A band D property sits at SAP 55-68. To enter band C at SAP 69, you need to add between 1 and 14 SAP points depending on your current score. Most cavity-walled D-rated properties can reach band C with loft insulation, cavity wall insulation, or heating upgrades costing under £2,500.
Does a new boiler move a property to band C? A high-efficiency condensing boiler typically adds 8-15 SAP points. Whether that is enough to reach band C depends on the starting score. For a property at SAP 60, a boiler upgrade alone may close the gap. For a property at SAP 45, additional measures such as loft or wall insulation are also needed. See our boiler upgrade guide for landlords.
What happens if my property is still below band C when the 2030 law comes in? Under the proposed rules, you would be unable to let the property without a registered exemption, and the proposed penalty is up to £30,000. Those figures are not yet law. If the Act and SI are passed on the 2027 timetable, you would have roughly three years from that point to comply. For properties already at D or E, that is achievable with targeted improvements and available grants.