Read the recommendations alongside the building’s condition and get a suitable plan before committing to improvements.
Read the certificate, not only the headline
An Energy Performance Certificate provides an A-to-G energy rating, with A the highest, alongside information about a home and suggested improvements. It is generally valid for ten years, although a newer certificate replaces the earlier one.
Start by checking the property address, assessment date and description. Then read the building elements and recommendations. An estate agent’s rating badge cannot give you that detail.
For a buyer, the certificate is a useful starting point for questions about the home. For an owner, it can help organise an initial conversation about improvements.
Sources [1]
Keep energy estimates in context
The rating uses a standard assessment of the building and its services. It is not a personalised prediction of your household’s bills.
Energy Saving Trust explains that EPC estimates cover heating, hot water and lighting; they do not include all the electricity used by appliances. Your actual use, tariff and preferred indoor temperature can differ from the assumptions behind the assessment.
Compare the certificate with the property you are viewing. If the heating or insulation appears to have changed since assessment, ask for supporting information. An older certificate may not describe the home as it stands today.
Use the recommendations to ask better questions
The recommendations show potential improvements and indicative costs or savings. Treat them as prompts for investigation before committing to work.
Ask which measures are suitable for this particular building, what existing condition must be checked, and how one improvement affects another. Energy Saving Trust cautions that the recommendations come from a national model and do not constitute a tailored retrofit design.
A surveyor or relevant specialist can help identify questions about the building’s condition, ventilation and moisture behaviour. Get current quotations for a defined scope rather than relying on the certificate’s indicative figures as a project budget.
Keep energy performance and condition separate
An EPC does not certify that heating equipment is safe, properly maintained or suitable for its purpose. Nor does it replace the condition information you would seek from a home survey.
Illustrative example: a buyer sees a recommendation to improve loft insulation, while a survey identifies evidence of a roof leak. These are separate findings that need to be considered together before arranging work.
Put the documents side by side and list the questions they raise. Clarify what needs repair, what needs specialist assessment and which improvement decisions can sensibly wait until you have better information.
Sources [1]
Make a short, usable improvement plan
Begin with your priorities: warmer rooms, more controllable heating, lower energy use or preparation for future alterations. Use those priorities to discuss options instead of pursuing a letter grade in isolation.
Keep a record of the existing certificate and any available installation documents. For proposed work, note the scope, dependencies, advice received and quotation date. After improvements, discuss whether a new assessment would usefully reflect the changes.
You do not need to decide everything at once. A clear list of questions and a coordinated sequence of work is more useful than a collection of unrelated product quotations.
Your checklist
- Check the address and assessment date.
- Read the construction and heating descriptions.
- Ask about changes made since assessment.
- Separate estimated savings from your budget.
- Review recommendations alongside condition findings.
- Seek a suitable plan and current quotations.
Common questions
Does a good EPC rating mean the property is in good condition?
No. Energy performance and physical condition answer different questions.
Must I carry out every recommendation when buying a home?
For an ordinary owner-occupier purchase, the recommendations are guidance rather than a compulsory renovation list. Different requirements can apply when letting property or carrying out particular building work.
Sources & further reading
Source material checked on 6 October 2026. Official guidance may change.
- GOV.UK — A guide to EPCs for the marketing, sale and let of dwellings
- Energy Saving Trust — Energy performance certificates explained
- Energy Saving Trust — How to improve your EPC rating
General guidance for property owners in England. Your property, circumstances and agreed inspection scope determine the advice you need.
A QUESTION ABOUT YOUR PROPERTY?
Energy Assessments
Understand how your building performs.
