Should money made in the capital stay in the capital? Boris Johnson thinks so.
He's wants the Government to give London the 1.3 billion pounds raised here through Stamp Duty every year.
With property prices traditionally higher than anywhere else in the country, the Mayor thinks the money made selling flats and houses should benefit Londoners, and be used to build more so-called affordable homes.
So is this the right way to solve the housing crisis?
Boris Johnson is asking the government to let London keep all stamp duty raised on its property sales - estimated at around £1.3 billion a year. He wants the money to be able to build a million homes by the mid 2030s.
The Mayor claims that this arrangement would give the capital a stable income to create a 25 year plan that would solve the capital's housing needs, create hundreds of thousands of long-term jobs and give a massive boost to the economy.
"Give London the tools and we will solve its impending housing crisis", said Boris.