Yes, you can absolutely buy a British castle, and as of 2026, there are dozens of such properties on the market across England, Scotland, and Wales. The price of a castle varies wildly based on its condition, history, and location. A "castellated" Victorian manor or a partially ruined tower in rural Scotland can sometimes be found for as little as £500,000 to £1 million—comparable to the price of a modest flat in central London. However, major, fully restored historic fortresses with extensive estates can fetch £10 million to over £20 million. Specialized real estate agencies like Castleist or Sotheby’s often list these unique homes. Potential buyers should be aware that many British castles are "Grade I or II Listed," meaning they are protected by heritage laws that strictly regulate any renovations or repairs. Additionally, the maintenance costs for stone walls, ancient roofing, and heating such massive, drafty spaces can run into hundreds of thousands of pounds annually.