People across Cumbria have been receiving letters from landowners laying claim to historic mineral rights under their homes.
Typically these claims are being made by successors to a Lord of the Manor title, which dates back to medieval times.
Descendants can still claim rights to hunt, shoot or fish and claim mineral rights on property that was once part of a manor.
However, due to a change in law, landowners now have to register these interests. The result is hundreds of homeowners are being surprised and shocked by the letters.
In this exclusive report, Hannah McNulty has been looking at what it all means.
Legal experts are urging anyone who is receiving letters about claiming mineral rights under their properties to take legal advice.
Homeowners in Carlisle are among people from all over the UK to get the notices. Richard Miller from Burnett's is one of several solicitors dealing with queries.
For more information and advice on the issue of mineral rights, visit the Land Registry website here.
Hundreds of people in Carlisle have begun receiving letters from landowners claiming mineral rights under their homes. It's all due to a change in law later this year, which means if the landowners don't register the mineral rights, they may lose them.
Doris and Richard Wilson are one of dozens households in the Harraby area of Carlisle to get a letter. They bought their former council house 30 years ago.