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What is a Whole House Plan?
A Whole House Plan, also known as a Whole House Retrofit Plan, is a detailed recommendations report and an invaluable first step for anyone considering improving the energy efficiency of their home. It’s a decision-making tool that shows you where energy is currently being used or wasted in your home and makes a series of recommendations about which improvements would improve its energy efficiency, showing you the estimated cost of each improvement and the predicted benefits in terms of energy bills, CO2 emissions and EPC rating.
How is a Whole House Plan produced?
A Plan starts with a Retrofit Assessment – a thorough survey to gather the information about your home that is needed to produce the Plan. The Retrofit Assessor uses the information to build a digital model of your home.
The Retrofit Coordinator, who may be the same person as the Assessor but performing a different role, uses the base model to analyse your home’s current energy use and then looks at the potential costs and benefits of a long list of potential improvements.
What does a Whole House Plan include?
- Your Plan includes:
- A summary of the construction of your home, looking at the building ‘fabric’, particularly insulation, and things like heating and hot water systems and their controls, lights and ventilation.
- A breakdown of where energy is currently used.
- A series of recommendations about the most appropriate improvements for your home, placed in a sensible order and split into proposed installation phases.
- A description by the Retrofit Coordinator of the proposed improvements, outlining the reasons for including them and some of the issues that need to be considered before and during installation.
- When you have had time to read your Plan, you can arrange a video call with your Retrofit Coordinator where you can ask questions about the report and discuss possible next steps. If you are ready to proceed to the next step of our service, the specification writing, you can tell the Coordinator which measures you would like to proceed with. If you need more time to think about next steps, you can come back to us whenever you are ready.
What’s the value of a Plan?
A Whole House Plan is written by a Retrofit Coordinator, an independent, impartial expert who is not tied to a particular solution, so you can be sure that their recommendations are the most appropriate improvements for your home, taking account of its age and construction.
It’s called a Whole House Plan. Can I still have a plan if I own a flat?
Yes! It should really be called a Whole Home Plan. There may be some improvements that aren’t possible in a flat because you don’t own the whole building, or you may need to work with the other owners of your building to make improvements together. Your Plan will discuss these constraints.
Why choose us for your Retrofit?
(If you are in London – Cosy Homes London)
Choosing Cosy Homes London means working with a trusted, local team dedicated to making London’s homes warmer, greener, and more comfortable. We offer expert Retrofit Assessors and Coordinators who understand the unique challenges of London properties, from period homes to purpose-built flats. With independent, impartial advice and a fully tailored Whole House Plan, we guide you confidently from assessment through to installation. We aim to help you reduce energy bills, cut carbon emissions, and future-proof your home with high-quality, carefully planned retrofit improvements.
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