【正文】 erage.
　　It is not fuelling house price inflation in London or at the top of the market.
　　It is helping families, and that is how we intend to keep it.
　　So today Iamp。rsquo。ve taken big new steps to protect financial stability, strengthen the new role ofthe Bank of England and pleted the range of tools at their disposal.
　　This addresses the economic problem of how we stop rising house prices leading to anunsustainable rise in household indebtedness, and threatening the wider economy.
　　But it does not address the social problem of how we stop young families being priced out ofthe housing market altogether.
　　That requires a third pillar to our housing strategy, alongside the clear analysis and newfinancial weapons.
　　We need to see a lot more homes being built in Britain.
　　The growing demand for housing has to be met by growing supply.
　　The alternative, as in any market, is that prices will rise so that homes bee unaffordable tomany of our citizens and take up ever more of their ines.
　　Weamp。rsquo。ve already taken big steps to deliver those new homes.
　　Weamp。rsquo。ve reformed our antiquated planning system.
　　The changes were hard amp。ndash。fought and controversial, like all things worth battling for in politics,and now they are already starting to work.
　　Last week we saw permissions for new homes rising by 20% in a year.
　　Weamp。rsquo。ve got the biggest programme of new social housing in a generation。 weamp。rsquo。re regeneratingthe worst of our housing estates。 and weamp。rsquo。ve got the first garden city for almost a centuryunderway in Ebbsfleet.
　　Now we need to do more. Much more.
　　We have beautiful landscapes, and they too are part of the inheritance of the next preserve them, we must make other promises.
　　If we want to limit development on important green spaces, we have to remove all theobstacles that remain to development on brown field sites.
　　Today we do that with these radical steps.
　　Councils will be required to put local development orders on over 90% of brownfield sites thatare suitable for housing.
　　This urban planning revolution will mean that in effect development on these sites will bepreapproved amp。ndash。 local authorities will be able to specify the type of housing, not whether thereis housing.
　　And it will mean planning permission for up to 200,000 new homes amp。ndash。 while at the same timeprotecting our green spaces.
　　Tomorrow, Boris Johnson and I will jointly set out plans for new housing zones across Londonbacked by new infrastructure, so that we see thousands of new homes for London families.
　　And weamp。rsquo。ll take the same approach in the rest of the country。 with almost half a billion poundsof financial assistance in total set aside to make it work.
　　Now I suspect there will be people who object to new building, even on the brownfields of ourcities.
　　But let me be clear.
　　I will not stand by and allow this generation, many of whom have been fortunate enough toown their own home, to say to the next generation: weamp。rsquo。re pulling up the property ladderbehind us.
　　So we will build the houses Britain needs so that more families can have the economic securitythat es with home ownership.
　　And today I will give the Bank of England the powers it needs over mortgages, so that Britainamp。rsquo。seconomic stability always es first. And that is what our long term economic plan isdelivering.
　　Lord Mayor, Ladies and Gentlemen,
　　Insisting on the integrity of our financial markets.
　　Confronting the risks from our housing market.
　　Tackling the long term challenge of housing supply.
　　These are the further actions I take today to ensure that we learn from the mistakes of the pastand build a resilient economy for all.
　　These last four years have required difficult decisions.
　　We embarked on the hard task of rebuilding our economy。 and making sure our country couldpay its way in the world.
　　That task is not plete.
　　Our national prosperity is not yet secure.
　　But if we carry on working through our long term economic plan then we can say withconfidence that brighter days lie ahead.