A mock up of a monopoly set outside St Paul's Cathedral as part of anti-capitalist protests in London, October 27, 2011.
The average house in Britain's capital now costs over £500,000 - and it's still rising. Even flats in "non-prime" areas of London are considered "relatively affordable" at just under £600,000.
Business Insider scoured London property listings to find the most ridiculously overpriced properties on the market, or that have been sold in the last couple of years.
Some of them are tiny, some are miles from central London, and some are uninhabitable. But they've all got one thing in common: they're incredibly expensive for what they are.
Check out the properties below.