New rules could affect nine in 10 rental properties in duchies of Cornwall and Lancaster and at Sandringham King Charles and Prince William could be forced to spend up to £10m upgrading hundreds of rental properties on their private estates to meet planned energy-efficiency rules. The government has announced that landlords will need to ensure their properties have energy performance certificate (EPC) ratings of C or higher by 2030 – up from the current requirement of an E. Continue reading...