I'm a landlord from the personal rented sector (PRS), what measures could be installed under ECO? Go through more It's the eligibility in the tenant in the house, rather than the landlord, that needs to be deemed for ECO4 retrofits. SIPs are created in the factory and delivered to occupation https://freeecogrants.co.uk/how-to-make-your-home-more-comfortable-by-applying-for-insulation-grants/