Why an EPC Below B Doesn’t Automatically Mean Retrofit Capex

With the government proposing EPC B from 2031 for privately rented non-domestic buildings over 1,000m² in England and Wales, where cost-effective, property owners are increasingly looking at the cost of bringing portfolios up to standard. The proposal is not yet in force and remains subject to secondary legislation.  

But there is an important distinction:

A building below EPC B does not automatically equal a retrofit project.

Before committing Capex, owners should determine what action the property actually requires.

1. Check the existing EPC

EPCs are valid for up to ten years. An older certificate may not fully reflect subsequent changes to the property.  

For some assets, reassessment may therefore be appropriate before physical retrofit expenditure is committed.

2. Check whether the property is in scope

The government’s proposed 2031 EPC B requirement is targeted at privately rented non-domestic buildings over 1,000m².

Buildings below 1,000m² are intended to remain subject to the current EPC E minimum.  

Portfolio owners therefore need to segment their estate before applying a single retrofit assumption across every property.

3. Consider exemptions and cost-effectiveness

The government intends existing flexibility mechanisms, including the seven-year payback test and exemptions, to remain under the proposed future framework.  

Where the expected seven-year energy savings from a measure are lower than its installation cost, an exemption may be available subject to the required evidence and registration.  

Prioritise before investing

The useful outcome is not simply a list of buildings below EPC B. It is a portfolio segmented into:

reassessment candidates → potential exemptions → further validation → active retrofit priorities.

This distinction can materially change where capital is deployed. In one 67-property mixed-use portfolio, UpGreen’s screening identified 51 likely exemption candidates and 16 properties requiring active Capex attention. 

The seven-year payback test is one of the mechanisms that can affect whether retrofit investment is required. Property owners can read our guide to MEES exemptions and the seven-year payback test for a more detailed explanation of how this works.

UpGreen provides the portfolio intelligence layer: helping owners and advisers understand the estate first, prioritise where further professional assessment is required, and focus capital on the properties that genuinely need attention.

If you manage a larger portfolio and want to understand its potential MEES exposure, Book a demo to see how UpGreen can turn an address list into a portfolio-level compliance and retrofit roadmap.