Please or to access all these features

AIBU?

Share your dilemmas and get honest opinions from other Mumsnetters.

Moving in with partner- pay £400 rent? Is that ok?

182 replies

Susan7654 · 28/10/2025 15:18

My partner and I are both single parents and have been together for five years. We’ve decided to move in together at his house. I’ve been renting until now.

His daughter (19) works full-time and pays him £300 a month as she’s no longer in education. My daughter is 18 and still in college.

He earns £52,000 a year ( mortgage around £1400pcm) and I earn £28,000. I’d like to contribute fairly to the household, but I’m not sure how much is reasonable. Of course, I’ll pay for food, bills, and my own expenses.

I was thinking around £400 a month rent, plus half of the household bills, in addition to covering my food and personal costs.

Does that sound fair, or should I contribute more (or less)?
We didnt discussit yet. His daughter expects my daughter to pay too same amount, as she wants it to be fair. My daughter only works part time.
In that case should I pay £600?
I didnt discuss it with him yet as I dont know whats right and I tend to be overgenerous and than regret...
We are engaged but not planning on marrying anytime soon. We first want to try it out, see how it goes.

OP posts:
DecemberPlusFebruary · 28/10/2025 16:06

What is your current rent?

Crikeyalmighty · 28/10/2025 16:03

I think £600 rent, half the bills, half the food and your daughter gives you £175 a month - this should leave you with around £850 a month

Chocbuttonsandredwine · 28/10/2025 15:41

Don’t do it.

Sounds like chaos and when it all goes wrong, it will be your daughter (and probably you) that will be homeless.

do you rent currently?

Arlanymor · 28/10/2025 15:28

Presumably his daughter is paying a low amount because she is saving up to move out at some point? Your contribution shouldn't be based on whatever agreement they have between themselves. Typically you would split the total cost of living expenses based on income or whatever the market rate rental value would be for a similar property. In terms of your daughter, presumably the same applies, she pays lower than market rate because she will be saving up too? In which case her contribution should be pro rata based on what his daughter is paying as a full time worker, presuming she pays him directly and you don't combine your contributions.

Dacatspjs · 28/10/2025 15:27

I don't think £400 is over generous for accommodation for the two of you!

I think offering £600 would be fair. Presumably you'll still be better off than you were before? As long as you aren't financially disadvantaged I think this is what I would offer.

Newdoggo · 28/10/2025 15:27

Maybe suggest £400 for you and your DD and £200 for his DD to be fair - he's still getting a chunk of rent plus bills split, he'll be saving each month and hopefully you'll all be better off

SamphiretheTervosaur · 28/10/2025 15:23

" His daughter expects my daughter to pay too same amount, as she wants it to be fair"

She gets a short sharp lesson in what is fair then

You and partner are the adults. She can pay her dad whatever they agree between them. Just as your DD can pay you when she is working.

You and your OH need to discuss this: what you both think is equitable, his DDs attitude/expectations

It may be that their relationship make it impossible for you and your DD to live with them without there being resentment. Best get that figured out before you make the leap!

Swipe left for the next trending thread