Sefton Central Labour MP Bill Esterson told the House of Commons that Sefton's greenbelt was underthreat from a Tory-led Government intent on looking after its rich party donors rather than local communities.
The Tory-Lib Dem Government has announced more changes tot the planning rules which encourages local authorities to build on greenbelt.
But Bill told a House of Commons debate on housing that planning permission has already been given which would allow 330,000 new homes to be built on land which isn't greenbelt.
He told MPs: "In Formby in my constituency, a representative from the developer David Wilson Homes told those attending a recent public exhibition about plans to build 300 houses on green-belt land. Hundreds of residents who turned up to the meeting were told that the development would go ahead and that there was nothing they could do about it.
"That exhibition coincided with the Chancellor’s announcement about making planning easier, and the concern is that developers are queuing up to build on the green belt in places such as my constituency - and many other constituencies with rural or semi-rural areas - because it is more attractive and financially more advantageous.
"I hope that the Minister will listen to honourable members from across the House who have called for practical suggestions that will protect the green belt as far as possible, and that he will take on board suggestions from members of his own party as well as from the Labour party on solving this very real housing crisis."
Bill said the Tory-Lib Dem Government was clearing the way for developers to "bulldoze the greenbelt".
Bill said: The Chancellor George Osborne is making clear his intent to allow building on the greenbelt at the appointment of Nick Boles as the government's 'Greenbelt Minister' is very ominous.
"The Conservative MP has openly branded greenbelt campaigners 'hysterical, scare-mongering latter-day Luddites'. So we know what his views are.
"Given the appointment of Mr Boles, and the fact that many of the Conservative Party's donors are developers, then we know where the government's loyalties lie, and they aren't with the people of Sefton who want to save the greenbelt. David Wilson gave money to the Conservative Party and is a shareholder in David Wilson Homes who plan to build up to 300 homes in Formby."