Why the form exists
A mortgage lender lends against the property as security, not only against the borrower's promise to repay. Before releasing funds, the lender needs to be confident its charge will take priority if the loan is not repaid and the property has to be sold.
The risk comes from people living in the property who are not party to the mortgage. English land law allows a person with a proprietary interest in land to hold that interest as an overriding interest where they are in actual occupation, meaning it can bind a lender even though it is never recorded on the register. A partner who contributed to the purchase price but was never added to the title, or a parent who paid towards the deposit, can hold exactly this kind of interest without anyone having turned their mind to it.
The consent form exists to deal with that risk before completion, rather than discover it afterwards.
The legal position it is dealing with
The relevant rule is in the Land Registration Act 2002, Schedule 3, paragraph 2. An interest belonging to a person in actual occupation of land can override a registered disposition, such as a new mortgage, even though the interest was never entered on the register.
There are limits to this. The protection does not extend to an interest the occupier failed to disclose when reasonably asked about it, or to occupation that would not have been obvious on a reasonably careful inspection of the property. A lender cannot rely on those limits in advance, though — it finds out whether they apply only if the point is later tested, by which time the loan has already been advanced.
That uncertainty is why lenders do not wait to find out. Standard conveyancing practice, set out in the handbook used by solicitors acting for mortgage lenders, calls for a signed consent form from adult occupiers before completion, regardless of how likely an overriding interest actually is in any individual case.
Who is asked to sign, and when
The usual convention is that anyone aged 17 or over who will be living in the property, and who is not a borrower under the mortgage, is asked to sign. The threshold is set at 17 rather than 18 because someone who has not yet turned 18 at application may do so before completion.
This catches a wide range of relationships: a spouse or partner who is not on the mortgage, an adult child who still lives at home, a parent who has moved in, or a friend sharing the property informally. Whether that person has ever contributed financially to the property makes no difference to whether they are asked to sign — the form is sought regardless, because the lender cannot know in advance whose interest might later be asserted.
What signing actually does
The form typically does two things. It postpones whatever interest the occupier may have in the property behind the lender's charge, so that interest does not stand in the way if the lender later has to enforce its security. It is also usually drafted as a waiver of the occupier's right to object to the lender taking possession and selling the property if the mortgage is not repaid.
The wording does not usually extinguish a beneficial interest outright. More often it ranks that interest behind the lender's charge, so it can still exist between the occupier and the legal owner, but it no longer protects the occupier's right to remain in the property against the lender. The precise effect depends on the document in front of you, which is why it needs reading rather than assuming.
Why this needs independent advice
The occupier signing the form is, in almost every case, not a party to the borrowing and gets no direct benefit from it. They are being asked to give up a legal protection for someone else's benefit — usually a partner, a child or a parent — which is the same pattern that makes independent advice a requirement for personal guarantees and other third-party security.
A lender aware of that kind of relationship, who does not ensure the occupier has had the chance to take separate advice, risks the consent being challenged later and its security being worth less than it appears. That is why many lenders will not complete without a certificate confirming the occupier took independent advice, rather than simply accepting the form on their conveyancer's say-so.
Before you sign
A short list of what is worth having ready:
- The consent form or deed itself, in the form the lender has issued
- Whether you have ever contributed to the purchase price, deposit or mortgage payments
- The property address and the name of the borrower or borrowers
- The completion date, since the form is usually needed before then
- Any correspondence from the lender or conveyancer explaining why it has been requested
This article is general information. It is not advice on your matter, it cannot take account of your circumstances, and the law changes. If you have been asked to sign something, take advice on the document in front of you.