Royals

Prince William, King Charles risk paying British government £10 million

A new rule drops that could end up costing both King Charles and Prince William upwards of £10 million in upgrades

By H. Anjum
Published August 16, 2026
Prince William, King Charles risk paying British government £10 million
Prince William, King Charles risk paying British government £10 million

Prince William and King Charles are currently on the hook for nearly £10 million, and its all related to upgrade requirements in the new energy performance certificate (EPC). It has ratings of C or higher that the government is putting into effect and it is required to be in effect by 2030.

For those unversed with EPC’s, they are documents that work to give properties a grade regarding their energy-efficiency, gauge environmental impact and also estimate energy bills. Furthermore, as estate owners the Royal Family is not immune either.

In a surprising turn of events, a report by The Guardian also finds that the duchies of both Cornwall and Lancaster and the Sandringham stand at grade D and in light of that could be forced to spend nearly £10,000 for upgrades and £30,000 for every home they continue to rent without carrying out the necessary work.

For those unversed with the properties, the Duchy of Lancaster alone spans accross 18,000 hectares (44,000 acres), and Sandringham is set on 8,000 hectares (19,000 acres). 

H. Anjum
H. Anjum is a News Editor at The News International (Digital) with over five years of newsroom experience. She is a media graduate specialising in British royal coverage, reporting on monarchies, traditions, and modern royal life. She also writes on fashion, movies and TV shows with contemporary relevance for a global audience.