Below we’ve set out the costs associated with each level of our EcoCosi service. If you want to find out more about the average costs for specific retrofit measures, check out our How much does a retrofit cost page.

There are costs for each phase of the EcoCosi service. The typical costs are as follows:

Legal Framework & Pre-vetted installer Network


This is a fixed fee based on the services provided. It includes the finalisation of your retrofit, as well as connecting you with our trusted installer network.

Find out more about this retrofit stage
A contractor carrying out external wall insulation retrofit

Project Management Support Service

This will be a calculated, fixed fee, based on the measures and scale of works.  

£1,750+VAT for projects up to £20,999 

£1,750 + £100 per £1,000 installation cost + VAT for projects above £20,999.

This stage includes our project management services, Quality Assurance process, and post-installation support.

Find out more about this retrofit stage