It is quite common for a parent to assert an interest in their offspring’s home either because they are a legal owner (appear on the legal title at the Land Registry) or because they claim a ‘beneficial interest’, for example by having provided part of the purchase price.  There can be heated debates about whether these are true property interests or whether funds advanced by parents to help their offspring buy are simply soft loans or even gifts that were never intended to be repaid had the parties stayed together. It is possible for a parent to intervene in proceedings but there needs to be caution; these are not easy claims to establish especially where a party is not on the legal title and there can be serious cost implications. Legal advice is essential at an early stage.