Bringing England’s private rented homes up to an EPC rating of Band C by 2030 is shaping up to be one of the most complex and costly regulatory challenges landlords have faced in decades.

New analysis by Octane Capital suggests that almost £20 billion of investment will be required nationwide. Over half of all privately rented homes currently fall below EPC C, equating to around 2.48 million properties that will need improvement within the next five years.

At Littlefairs Property Company, we’re already seeing how difficult this is in practice — particularly for landlords with older, traditionally built homes, which make up a large proportion of the rental stock in cities like York. These properties often suffer from a combination of poor insulation, inefficient heating systems, single glazing and outdated controls, all of which are expensive and disruptive to remedy.

While government messaging often focuses on “simple upgrades”, the reality is that many homes will require multiple, layered improvements to achieve EPC C — and even then, some may still fall short or require formal exemptions. With the average upgrade cost estimated at over £8,000 per property, this represents a major financial burden, especially for smaller landlords.

In London alone, the projected cost exceeds £4.3bn, with other regions close behind. For many landlords, compliance will not be a question of willingness, but whether the works are technically feasible, financially viable, and achievable within the timeframe.

From Littlefairs’ perspective, the EPC C deadline is not something landlords can afford to ignore — but it is also far from straightforward. Early planning, realistic budgeting and professional advice will be critical if properties are to remain legally lettable beyond 2030.