Westminster Council would be forced sell of more than three-quarters of its social housing under government plans to extended the controversial Right to Buy scheme.

According to data released today by homelessness charity Shelter, 9,213 homes will be forced to be sold to private owners to fund the new proposals that allows housing association tenants to purchase their rented properties.

In London, the value over which homes would be sold ranges from £340,000 for a one-bedroom home, to £1.2million for a property with five bedrooms or more.

Shelter has calculated that there are 9,213 homes in Brent above the London threshold, amounting to 76.2 per cent of its social housing stock.

The charity also estimates that 246 homes in Westminster would need to be sold a year.

Despite the government claiming the sales will fund the extension of the Right to Buy scheme Shelter claims there will still be a £2.45billion black hole in the plans.

Campbell Robb, Shelter’s chief executive, said: “More and more families with barely a hope of ever affording a home of their own and who no longer have the option of social housing, will be forced into unstable and expensive private renting.

“The government needs to scrap this proposal and start helping the millions of ordinary families struggling with sky high housing costs.”

He added: “Selling off large swathes of the few genuinely affordable homes we have left is only going to make things worse for all those struggling to keep up.”

A Department for Communities and Local Government spokesman said: “More council housing has been built since 2010 than in the previous 13 years.

“Councils should make the best use of their assets and manage their housing stock as efficiently as possible. So it is right that as high value council homes become empty they should be sold to fund new affordable house building in the same area.

“Our plans will also extend Right to Buy to more than a million housing association tenants, with every home sold replaced on a one-for-one basis. Details will be confirmed in the Housing Bill.”