You don’t need to be married to be added to a mortgage. What matters is whether the lender is happy for you to become a joint borrower, and how you want to record ownership of the property legally.
The process is usually called a transfer of equity. That is the legal term for changing who owns the property, which is normally done at the same time as changing who is responsible for the mortgage.
Step one: check what you’re actually adding yourself to
There are two separate things here. One is the mortgage, which is the loan. The other is the title deeds, which are the legal ownership.
Most couples choose to be on both, because it keeps things aligned. If you were added to the mortgage but not the deeds, you could be responsible for the debt without having legal ownership. If you were added to the deeds but not the mortgage, most lenders would not allow that unless they were explicitly involved, because it changes their security.
So in practice, lenders usually want any new owner to be a party to the mortgage as well.
Step two: the lender has to approve it
Adding you is not just an admin change. Your partner’s lender will underwrite it like a new application, because they are taking you on as a borrower.
They will assess your income, outgoings, credit history and the property details, then confirm whether they will allow the change. If the lender says no, the alternative route is often to remortgage to a new lender in both names, subject to affordability.
Step three: decide how you will own the property
Even though the lender treats both borrowers as equally responsible for the whole mortgage, you can choose how ownership is split.
From the lender’s perspective, joint borrowers are “jointly and severally liable”. That means the lender can pursue either of you for the full payment if it ever came to it, regardless of any private agreement.
From your perspective, you have two common ownership options.
If you own as joint tenants, you both effectively own the whole property together and, if you sell, the equity is usually shared equally. It also means that if one of you dies, the property automatically passes to the other.
If you own as tenants in common, you can record specific shares, which can be helpful when one partner already has existing equity they want to protect. Those shares are normally documented through your solicitor, often alongside a declaration of trust.
Step four: legal work and costs
A solicitor or conveyancer will handle the transfer of equity and the lender’s legal requirements. There will usually be legal fees, and if you are changing the mortgage product or borrowing more, there may also be valuation or product fees.
One other practical point is Stamp Duty. If you are taking on a share of the mortgage debt as part of the transfer, there can be stamp duty implications even if no cash changes hands, so it is worth having a solicitor confirm the position early.
A sensible way to approach it
If you and your partner are aligned on the long-term plan, the best starting point is a conversation with the current lender to see whether they will allow the transfer on the existing mortgage, and on what terms.
At the same time, it is worth agreeing upfront how you want to split ownership and what you want to happen if you separate in future. That is not pessimistic, it is simply good housekeeping, and it is usually far easier to do at the start than to argue about later.
If you’d like to discuss this in more detail, including some lender and product options, then please contact one of our consultants on 023 8235 2300 and they’ll be able to give you a clearer idea of how we can help.
