Energy Efficiency Improvements for Rental Properties: Boosting Your EPC Rating

What EPC rating does a rental property need?

Today a privately rented home in England must have an EPC of at least E, unless you have registered an exemption. This has applied to all tenancies since 1 April 2020. The government has decided that all tenancies must reach EPC C, or its equivalent under new EPC metrics, by 1 October 2030, but the regulations to do that have not yet been laid.

The current rules are the Energy Efficiency (Private Rented Property) (England and Wales) Regulations 2015, explained in the GOV.UK landlord guidance. They apply to homes let on an assured (including assured shorthold), regulated or agricultural tenancy that are legally required to have an EPC. The 2030 plan is set out in the government response of 21 January 2026. That response says the government will seek new powers in an Act of Parliament and then lay regulations, aiming for them to come into force in 2027.

The rules now and from 2030

	Now (2015 Regulations, in force)	From 1 October 2030 (decided, not yet law)
Minimum standard	EPC E	EPC C equivalent, measured on new EPC metrics (fabric performance first, then heating or smart readiness)
Which tenancies	All tenancies, since 1 April 2020	All tenancies. There is no earlier date for new lets
Maximum you must spend	£3,500 including VAT	£10,000 including VAT per property. Qualifying spending from 1 October 2025 counts towards it
Cheaper homes	No separate rule	For homes worth under £100,000, the cap is 10% of the property's value
Main exemptions	Mostly 5 years ("new landlord" is 6 months)	Cost-cap and property-value exemptions last 10 years. Most others last 5
Maximum penalty	£5,000 per property (civil penalty)	£30,000 per property, per breach (needs new primary legislation)
Existing EPC C	Not relevant	An EPC rated C or above on the current Energy Efficiency Rating, lodged before 1 October 2029, counts as compliant until it expires or is replaced

The last row is the one to act on now. If your home can reach C on today's EPC rating, getting that certificate lodged before 1 October 2029 means you will not need to re-qualify against the new metrics until it expires. EPCs normally last 10 years. Keep invoices for energy work done since 1 October 2025, because that spending counts towards the £10,000 cap.

Current penalties

Under the 2015 Regulations, penalties are civil, not criminal. The council issues them, and the maximums are (GOV.UK):

• up to £2,000 for letting a non-compliant property for less than 3 months, and up to £4,000 for 3 months or more
• up to £1,000 for registering false or misleading information on the PRS Exemptions Register
• up to £2,000 for failing to comply with a compliance notice
• a combined maximum of £5,000 per property for each breach

Where to start

Start with the recommendations on your current EPC. The assessor lists the measures that would improve the rating for your particular property and shows the rating each would reach. Upgrades usually come in this order:

• Fabric first: loft insulation, cavity or solid wall insulation, draught-proofing, then glazing. The 2030 standard also asks for fabric performance first.
• Heating and controls: efficient heating, with controls that let the tenant set timing and temperature. Programmable heating is also part of criterion D of the Decent Homes Standard, which applies from 2035.
• Low-carbon heating, where the property suits a heat pump.

After any work, commission a new EPC. Your rating does not update on its own. For prices, use real quotes rather than national averages, and check the Energy Saving Trust for measure-by-measure guidance.

Grants landlords can use

The Boiler Upgrade Scheme is open to landlords who own the property and are replacing fossil-fuel heating. It pays £7,500 towards an air source or ground source heat pump, £5,000 towards a biomass boiler, and £2,500 towards an air-to-air heat pump. There is an extra £1,500 for homes off mains gas that are heated by oil or LPG (available until March 2027). You can get one grant per property, and the work must be done by an MCS-certified installer.

Insulation grants funded by energy suppliers and councils depend on the tenant's circumstances and the area, and the schemes on offer change often. Check the current options on GOV.UK: find ways to save energy in your home before you commission any work.

Exemptions under the current rules

If a home cannot reach E, you can let it only after registering a valid exemption on the PRS Exemptions Register. The exemptions are (GOV.UK):

• all relevant improvements made, or none possible within the £3,500 cap
• high cost: the cheapest recommended measure alone costs more than £3,500
• wall insulation that an expert advises would harm the property
• consent refused by a third party, such as the tenant, a freeholder or the planning authority
• devaluation: an independent RICS surveyor says the works would reduce the property's value by more than 5%
• new landlord: 6 months' grace in some circumstances

Frequently Asked Questions

What is the minimum EPC rating to let a property in England?

E, unless you have registered a valid exemption. Since 1 April 2020 this has covered all privately rented homes let on an assured, regulated or agricultural tenancy that need an EPC. Breaches bring civil penalties of up to £5,000 per property.

When will EPC C become mandatory for rental properties?

The government has decided on 1 October 2030 for all tenancies, with no earlier date for new lets. The regulations have not yet been laid, and the government first plans to take new powers in primary legislation. An EPC rated C or above that is lodged before 1 October 2029 will count as compliant until it expires.

How much will I have to spend?

Under the current rules, up to £3,500 including VAT. Under the 2030 rules, up to £10,000 including VAT per property, or 10% of the value for homes worth under £100,000. Spending from 1 October 2025 counts towards the new cap. Once you reach the cap without meeting the standard, you can register an exemption.

What grants are available for heat pumps?

The Boiler Upgrade Scheme pays £7,500 towards an air source or ground source heat pump, £5,000 towards a biomass boiler and £2,500 towards an air-to-air heat pump. Landlords who own the property can apply. Other insulation and heating grants depend on the tenant, the area and the current scheme.

Can I claim tax relief on energy efficiency work?

It depends on the work. HMRC treats replacing something with a modern equivalent, such as single glazing with double glazing, as a repair that you can deduct from rental income. A significant improvement is capital expenditure (HMRC Property Income Manual PIM2030). See the landlord tax guide and ask an accountant about a specific job.

Further Reading

• MEES penalties and the EPC C deadline: the full MEES compliance guide
• Decent Homes Standard for private landlords: how thermal comfort fits the 2035 standard
• Landlord repair responsibilities: section 11 duties for heating and hot water