EPC Band C by 2030: What Landlords Need to Do (and What It Will Cost)

From October 2030, every rental property in England must have an Energy Performance Certificate (EPC) rating of Band C or above. Around 2.5 million privately rented properties are currently rated D, E, F or G. If yours is among them, you have until October 2030 - but the sooner you start planning, the better the funding options available to you.

What is an EPC band and why does it matter?

An Energy Performance Certificate rates a property's energy efficiency on a scale from A (most efficient) to G (least efficient). The rating is primarily driven by insulation quality, heating system, glazing, and the property's age and construction.

Since April 2020, landlords have been prohibited from letting properties rated F or G (except under limited exemptions). The 2030 requirement raises this minimum to Band C for all new tenancies first, then eventually all tenancies.

What does Band C require in practice?

A Band C rating typically requires an EPC score of 69–80 points. For most older English properties, reaching Band C requires some combination of:

High-impact improvements

• Loft insulation (if absent): 270mm of glass wool or equivalent. Cost: £300–£600. Typical impact: +8–12 EPC points. Eligible for ECO4 grant funding if the property meets criteria.
• Cavity wall insulation: Only applicable to properties with a cavity (1920s+). Cost: £400–£800. Typical impact: +5–10 EPC points.
• Double/triple glazing: Replacing single glazed windows. Cost: £3,000–£8,000. Impact: +3–6 EPC points.
• Boiler replacement (A-rated condensing): Replacing an old G-rated boiler. Cost: £2,500–£4,500. Impact: +5–10 EPC points.
• Heat pump: Air source heat pumps can dramatically improve scores for properties where gas is the current fuel, though installation requires planning and adequate insulation first. Cost: £8,000–£15,000 (subsidised via Boiler Upgrade Scheme).

Smaller improvements

• LED lighting throughout: +1–3 points, very low cost
• Thermostatic radiator valves and smart thermostat: +1–2 points
• Draught-proofing doors and windows: +1–2 points

How much will it cost?

The average cost to bring a Band D property to Band C is estimated at £4,200–£6,800 for typical improvements. Band E properties typically require £7,000–£12,000 of works. Band F and G properties can require £15,000–£25,000+.

However, these figures vary enormously by property type, age, and existing specification. A 1970s semi-detached with loft insulation but single glazing is very different from a Victorian terraced house with solid walls and no loft.

ECO4 grant funding - is your property eligible?

The Energy Company Obligation (ECO4) scheme provides grants of up to £25,000 for energy efficiency improvements to low-income households. Critically, the property does not have to be owner-occupied - rented properties are eligible if the tenant meets the income criteria.

Eligibility broadly requires the tenant to be receiving certain means-tested benefits (Universal Credit, Housing Benefit, Child Tax Credit, etc.) and the property to be EPC Band D or below. If your tenant is on benefits, ECO4 could fund the majority of the upgrade cost at no charge to you.

To check eligibility, contact your energy supplier or an ECO4-approved installer. The scheme is funded by energy company obligations, not government budget - it exists regardless of the annual spending review.

What's the timeline?

Exact dates are still being confirmed in secondary legislation, but the current expectation is:

• From 2028 (new tenancies): Band C required for all new tenancies let after this date
• From October 2030 (all tenancies): Band C required for all existing tenancies

Exemptions will apply where the cost of reaching Band C exceeds £10,000 (the "cost cap"), where improvements would damage the property's character (e.g., listed buildings), or where the improvements cannot be made without third-party consent (e.g., leasehold properties requiring freeholder consent for external works).

What if I don't comply?

Letting a property below the minimum EPC rating after the compliance date is an offence. Local councils can issue Civil Penalty Notices of up to £30,000. The fine applies per property, not per tenancy.

Properties with an F or G rating are already subject to a £30,000 fine (since 2020). The same enforcement mechanism will apply to D and E rated properties after 2028/2030.

Should I act now or wait?

Acting now is almost always better for three reasons:

1. ECO4 funding is available now and may not remain as generous as the 2030 deadline approaches and demand for the scheme increases
2. Contractor availability will tighten significantly as 2028 and 2030 deadlines approach - the construction industry cannot install 2.5 million upgrades in a short window
3. Energy-efficient properties command higher rents and have lower voids - tenants increasingly factor energy costs into their rental decision

How PropReady helps

PropReady tracks the EPC band of every property in your portfolio and flags those that need upgrading, with estimated upgrade cost ranges and a reminder as the 2028/2030 deadlines approach. If you're a letting agent managing multiple properties, the portfolio dashboard gives you an instant overview of which properties in your portfolio need action.