Lord Sacks has spoken of the "special significance" to him of the Finchley Jewish school which will soon carry his name.
The Morasha Primary has acquired a permanent site in Stanhope Road to enable it to meet growing demand for places. After the move, it will be known as the Sacks Morasha Jewish Primary.
Addressing more than 200 guests at a dinner which raised £160,000-plus, the Chief Rabbi said the school was in the area he was raised and educated in. "I went to non-Jewish schools because there was no local Jewish school to go to. So this building means more to me than I can say. It is the fulfilment of a very personal dream."
Opened four years ago, Morasha will have 111 pupils by the next academic year and there is a waiting list for 2013.
Trustees' chair Jeremy Newman said: "Morasha means a legacy or heritage and we aim to make the school a 'morasha' for the community to be proud of."
Lord Sacks discussed other An-glo-Jewish issues with honorary Morasha principal Rabbi Ephraim Mirvis.