I'm a landlord inside the personal rented sector (PRS), what steps is usually set up less than ECO? Read more It's the eligibility of the tenant on the house, as opposed to the landlord, that should be considered for ECO4 retrofits. In some cases exterior insulation could demand arranging permission. https://freeecogrants.co.uk/what-you-should-know-about-solar-energy-grants-uk/