My hon. Friend is right, and there is a lot that we can do with new and existing homes to help to cut the carbon emissions from housing. It is right to do so, and irresponsible not to, given the carbon emissions that come from housing.
We must recognise that if our aim is to promote stability in the housing market, and to help first-time buyers, that means building more homes in the long term. We understand that the hon. Member for Welwyn Hatfield always feels a bit traumatised when we speak about building more homes. We have teased him before in the House about his local "No way to 10K" campaign. Let me remind the House what his local website said on the day he was appointed Conservative housing spokesperson:
"We believe you cannot build your way out of a housing crisis."
A week later, he changed it, so that it said
"whilst building more properties is obviously vital".
The hon. Gentleman was asked by Inside Housing to explain his views, and particularly to say whether his local "No way to 10K" housing campaign made him a nimby. He answered:
"No way 10k is not actually about 10,000 houses: it just happened to rhyme".
We thought it was bad policy, but it is just bad poetry.
Opposition Members are campaigning in every corner of the country against increased housing. I do not criticise Tory MPs who oppose individual developments, because we all know that there are atrocious developments that should be blocked at local level, but the hon. Member for Welwyn Hatfield knows that Conservative MPs across the country oppose increased housing.