Getting your buy-to-let ready for EPC C: what landlords need to know in 2026

If you own a rental property in Wandsworth, energy efficiency should now be part of your long-term planning. In January 2026, the government confirmed how higher minimum energy efficiency standards are intended to apply to private rentals. The wider Warm Homes Plan followed on 18 March 2026.

What the government has confirmed

Subject to the necessary legislation, all private rented tenancies in England and Wales will need to meet the higher standard by 1 October 2030, or have a valid registered exemption. Until then, the current legal minimum remains EPC E for properties covered by the Minimum Energy Efficiency Standards.

Under the planned rules, landlords will need to meet a C grade for fabric performance and a C grade for either smart readiness or heating system performance. The maximum required investment will be £10,000 per property over a 10-year period. Government modelling estimates an average spend of about £5,400 for homes below the required standard.

Relevant improvement spending from 1 October 2025 can count towards the cap. Keep invoices, EPC recommendations and professional advice because these records may be needed to demonstrate expenditure or support an exemption.

When will the EPC system change?

The government originally aimed to introduce new-style EPCs using the Home Energy Model from October 2026. However, an official statistical update published in May 2026 now lists the replacement of SAP with HEM, and wider EPC reforms, for 2027. Landlords should therefore avoid treating October 2026 as a fixed launch date and watch for final regulations and guidance.

An important transitional rule remains. A property that achieves EPC C or above against the existing Energy Efficiency Rating before 1 October 2029 will be treated as compliant with the higher standard until that EPC expires or is replaced.

Practical steps for Wandsworth landlords

Start by checking whether your EPC is current and what improvements it recommends. Prioritise suitable fabric measures such as insulation and draught reduction, but obtain specialist advice before altering older or traditionally constructed properties.

Before arranging work, check whether planning permission, listed-building consent, freeholder approval or tenant access arrangements could affect what is practical and lawful.

If the property remains below C, plan expenditure gradually and review the effect on returns using the rental yield calculator. A free letting valuation can also help you understand the property’s current rental position before committing to major work.

Staying compliant without the headache

Our full management service is charged at 13% and is exempt from VAT, with no referral fees added to contractors’ invoices. Further charges are explained on our additional fees page. Our letting only service is available if you prefer to manage the tenancy yourself.

The guide to letting and landlords page explain wider responsibilities. You can also visit our testimonials page, blog, residential buy to let page and current properties for sale.

Book your free letting valuation today, or call 020 8870 5800 to discuss your property and priorities.

Click here to schedule an appointment with Matt, founder of Lets Find A Home