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Adding partner to mortgage, can anyone help me work this out?

56 replies

LadderLady · 21/03/2026 12:24

Struggling to get my head around the best way to do this. I own a house worth roughly £200,000 with a £60,000 mortgage. My partner and I were looking to move and buy somewhere together but can't find anything so we'd like to stay in my house.

Partner has £20,000 that he'd like to invest in the property. We'd then like the remaining mortgage to be in both our names, and borrow an additional £30,000 to do some home improvements.

Need to then draw up an agreement to say who owns what percentage? Or maybe protect our initial money (so if we were to split and sell, he'd get his 20 back, I'd get my 140 equity back and then any additional profit be split 50/50?)

Would we pay off 20k from my mortgage then borrow 30k between us?

Do we use the 20k for improvements and just borrow 10k, add him to the mortgage and I'm 'giving' him part of the house because he's using his money to add value? And would that come from my current equity?

I hope I've explained this properly, I've spoken to my current mortgage provider and they weren't much help, just wanted figures. Maybe we need to just speak to an independent advisor?

OP posts:
WallaceinAnderland · 22/03/2026 21:52

OP do you know the difference between the mortgage and the deeds?

Beesandhoney123 · 22/03/2026 21:54

Presumably if you did decide to go ahead, he will be paying all the legal fees for you and him?

What about when you want a new kitchen? Who pays and who decides how much money that has put on the house and is his share or not?

Don't do it. Even if you've seen his full credit report without it being tampered with, don't do it. You will regret it.

OnTheBoardwalk · 22/03/2026 21:56

How long have you been together?

there’s no way he could afford to buy a house with you with only £20k. Think of all the legal issues and costs for you (I assume he’s not paying) and for you if you split up

buymeflowers · 22/03/2026 21:57

Do not do this

ChickpeaCauliflowerSalad · 22/03/2026 22:05

Changingplace · 22/03/2026 08:43

What do you gain here by the remaining mortgage being in joint names?

Right now you have a large amount of equity and low mortgage payments, yes you can have your originally investment ring fenced, but right now you own 100% and unless you’re struggling to pay the mortgage I don’t see what you gain except giving up 50% of the remaining equity.

I wouldn’t get financially intertwined like this when you’re not married, but equally I wouldn’t marry him either - doing that would effectively give him 50% of your house.

I don’t see the point of paying off £20k of the mortgage just to borrow £30k that you’ll pay interest on, there’s no logic in that.

Does he not own his own property? What age are you both? I’m concerned he sees this as an easy way to jump on your original investment and you potentially end up worse off.

This.

Keep your security.

if you were to split up you'd have to sell or get a bigger mortgage to buy him out, why would you put yourself in that position if you don't need to?

di as someone else suggested, split the bills. Charge him some rent & make sure he is saving the balance between that and market rent towards a deposit on a house moving forward.

Changingplace · 23/03/2026 08:17

thesealion · 22/03/2026 12:13

These replies are hilarious though because if a man was refusing to add his female partner to the mortgage or refusing to get married he’d be called all sorts of names.

The difference is typically a woman might be in this situation if she’d given up work to have their kids or lost earning potential going part time while he’d grown his career.

Context is important, that’s not what’s happening here.

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