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AIBU?

Share your dilemmas and get honest opinions from other Mumsnetters.

AIBU to let my adult nephew move in after rent rise from my sister?

677 replies

YearsOfLife · 18/09/2026 08:38

My nephew is 24 and has been working full time for about a year after finishing university. When he first started working full time, my sister was charging him £500 per month to live with her and her partner. She has now told him he needs to pay £800 per month which he isn’t happy about as he is trying to save for a house deposit as well as having other costs and wanting to socialise. He spends a lot of time at work or with his girlfriend and friends so I do think £800 is a lot.

Our children are similar ages and my nephew has asked if he could live with us, paying £400 per month. We are happy for him to live here but it is causing a huge problem with my sister and her partner. They don’t think we should allow him to stay with us.

On the one hand I can see why my sister thinks we shouldn’t get involved, but on the other, he’s our nephew and an adult and if we’re happy for him to live here, he should be able to.

My sister has accused us of trying to make money from him which is untrue as we don’t charge our own children anything to live here and IF we take anything from our nephew, it won’t be £400 per month. This isn’t about money for us. I agree with my nephew that £800 is too much and want him to be able to have a life and save like my own children.

AIBU to say he can live here?

OP posts:
Pollymollydolly · 19/09/2026 15:44

Cherrytree86 · 19/09/2026 14:15

Why can’t he live in a house share with other young professionals?

he can still save then

he doesn’t need to live with family

Because the option of living with family is available to him, it sounds like he gets on well with his aunt, uncle and cousins, he’ll be paying less than market rent and will be able to save towards a deposit more quickly. Why shouldn’t he live with family?

FancyBiscuitsLevel · 19/09/2026 16:15

YearsOfLife · 19/09/2026 14:41

And he is living with other young people, my own children who are a similar age!

But they are all living as children of the family, living in your home, not being responsible for the bills or running the household, living by your house rules, not deciding them as equal adults. This is not the same at all to being responsible for a household, sharing the bills, deciding the house rules between them.

Ethelspagetti · 19/09/2026 16:33

Wow your sister is a piece of work, jacking up the rent like that to kick him out! Thank goodness he has you to help him. I wonder if your sister realises the damage she’s doing to their relationship? What a shame for him. But he is very lucky to have a lovely aunty to step in and support him.

Thecatspantaloons · 19/09/2026 16:38

Also why are people concerned about the potential severed relationship between the OP and her sister? It seems like the sister is emotionally blackmailing OP and her own child. And why are her finances more important than his need to save?

LeiaOrganaBananaHamock · 19/09/2026 16:40

I know you say you wouldn’t charge him, but if he’s offering the £400 I would take it and save it for him (but don’t tell him!). It would be a wonderful gift when he saves enough.
it really does sound like your sister is profiting from him….

MustTryHarderAndHarder · 19/09/2026 16:46

FancyBiscuitsLevel · 19/09/2026 16:15

But they are all living as children of the family, living in your home, not being responsible for the bills or running the household, living by your house rules, not deciding them as equal adults. This is not the same at all to being responsible for a household, sharing the bills, deciding the house rules between them.

I lived with my parents until I bought my own home. I didn't have any problems running my home.

Somethinggg · 19/09/2026 17:01

FancyBiscuitsLevel · 19/09/2026 16:15

But they are all living as children of the family, living in your home, not being responsible for the bills or running the household, living by your house rules, not deciding them as equal adults. This is not the same at all to being responsible for a household, sharing the bills, deciding the house rules between them.

You keep goalpost moving.

He's already lived away from home anyway. And living with OP means he gets to buy a home sooner, meaning he'll get more time being fully responsible for bills and a household than he would be if he had to spend time in a flatshare.

Any possible advantages of a non-familial houseshare with that anyone might be able to barrel scrape up are outweighed by the clear benefits of being able to save a deposit to buy his own place sooner.

ALJT · 19/09/2026 17:01

I don’t know where they live but £800 is double my monthly mortgage payment. I can’t see how she’s accused you of trying to make money off him when she wants £800. He would be better off him and his girlfriend trying to rent somewhere - again depending on where they live. Doesn’t answer your question because I am not sure what I’d do. I’m very close to my nieces and nephews as well as my siblings

Blondeshavemorefun · 19/09/2026 17:02

YearsOfLife · 19/09/2026 14:34

He wants to live with us. He can save more and have family around. Friends are always welcome here so he can have it all. I’m not going to worry about my sister when she’s behaved how she has towards her own son. If you don’t understand that, I can’t help you.

He is lucky to have you and being able to save a large deposit will help him so much

FancyBiscuitsLevel · 19/09/2026 17:03

MustTryHarderAndHarder · 19/09/2026 16:46

I lived with my parents until I bought my own home. I didn't have any problems running my home.

This was in response to the OP claiming her nephew and adult children living with her was the same as them living as a group independently. It’s really not! It’s fine, most people can learn fast how to run a household (although houseshares teach different skills to moving out to live alone or with a partner!), but living as a young adult with older family in their home, in the “child” position is very different to being in a houseshare situation.

FancyBiscuitsLevel · 19/09/2026 17:07

Somethinggg · 19/09/2026 17:01

You keep goalpost moving.

He's already lived away from home anyway. And living with OP means he gets to buy a home sooner, meaning he'll get more time being fully responsible for bills and a household than he would be if he had to spend time in a flatshare.

Any possible advantages of a non-familial houseshare with that anyone might be able to barrel scrape up are outweighed by the clear benefits of being able to save a deposit to buy his own place sooner.

Again, the OP responded to another poster saying he’d be better off living in a houseshare by saying he’d be living with people his own age at her house as her adult dcs are also living at home. I pointed out it’s not the same thing at all. Because it’s not! And while it’s fine to live with family as a young adult until buying your first home and living alone or with a romantic partner, claiming her home would be just like young single professionals living together just isn’t true.

TheWorldsInsane · 19/09/2026 17:10

FancyBiscuitsLevel · 19/09/2026 16:15

But they are all living as children of the family, living in your home, not being responsible for the bills or running the household, living by your house rules, not deciding them as equal adults. This is not the same at all to being responsible for a household, sharing the bills, deciding the house rules between them.

The OP has said that he has already lived independently at university and describes him as a fully functioning man who can cook, clean, iron etc. he will have budgeted at uni, he has worked part time and now full time and is saving. He wants to live with family, he wants to save, what the fuck is some peoples issue with this? This attitude of “Life must be hard, that’ll show ‘em is pathetic. I think it’s jealousy from some people on here, they and it tough so song want anyone else having an easier time. I had it really fucking tough and will do everything 8 can to make sure my family never have to go through that now I’m in a position to help them. Some parents are just cunts.

Somethinggg · 19/09/2026 17:14

FancyBiscuitsLevel · 19/09/2026 17:07

Again, the OP responded to another poster saying he’d be better off living in a houseshare by saying he’d be living with people his own age at her house as her adult dcs are also living at home. I pointed out it’s not the same thing at all. Because it’s not! And while it’s fine to live with family as a young adult until buying your first home and living alone or with a romantic partner, claiming her home would be just like young single professionals living together just isn’t true.

In fact, your first post was about saving and living with other young people (and no guarantee a houseshare would necessarily feature agemates, unlike OPs house). OP pointed out that he'll be with young people and saving more with her. She didn't say it was just the same as living with her at all and I don't know where you got that from. If anything it's an argument that living with her would offer more of the benefits that were being specifically cited.

You then goalpost moved to bills and stuff, but you weren't refuting OP because neither you nor she had mentioned those until then.

HidingFromSunshine · 19/09/2026 17:25

I think it’s a lovely thing to do, we are about to do some building work to make sure ours have the opportunity to stay home for as long as needed.

i do think this will do some damage to your relationship with your sister. She is being a twat though, and doing nothing will jeopardise the relationship with your nephew. So I think it’s a case of doing what’s right

Ilady · 19/09/2026 17:31

I am glad that you offered your nephew a home to live and where he can save money to buy his own place in time. His mother was trying to build up her own financial position at the cost of her son's and you know she has a good income. My feeling is that her partner could be behind this and they both saw a chance to get more money off her son.
At this stage she has ended up souring her relationship with her son and with you.

One of my friends has a mother like your sister. She has been mean with money for year's despite having a good income and savings. She tried to pull a similar stunt on my friend as your sister did to her son. Another friend of ours told her don't do what she wants and if she keeps this up tell x and y what she's up to.
She left my friend to deal with and sort out several difficult situations on her own. She been verbally nasty at times. She has moaned anytime she was asked to mind grandkids by another daughter.
One of her daughters recently got a new job and got several nasty comments about this job from her mother. The other girl is planning to move jobs as well to one with more hours and money.
Both girls have had enough of there mother and her behaviour. With the new job and the other girl changing jobs they are not going to be as available for help, to drive her places or provide care in time.

There mother is now in her late 70's and it just a matter of time before she will need help.

If you're in a position to help someone out why would you leave them to struggle and not help them out. It harder for young people now to get on the property ladder than it was years ago.

My friend has a relative that has been very good to her for years. I know that in time my friend will help this person out.
I can tell you now that you're nephew is glad to move into your home and he will remember what you did for him long term. My feeling is that when his mother is older he won't be rushing to help her out but he will be good to you.

MrsAnon6 · 19/09/2026 17:43

Your sister is really greedy. Even £500 is extreme but £800 is next level. She’s the one trying to make money out of her son.

FancyBiscuitsLevel · 19/09/2026 17:45

TheWorldsInsane · 19/09/2026 17:10

The OP has said that he has already lived independently at university and describes him as a fully functioning man who can cook, clean, iron etc. he will have budgeted at uni, he has worked part time and now full time and is saving. He wants to live with family, he wants to save, what the fuck is some peoples issue with this? This attitude of “Life must be hard, that’ll show ‘em is pathetic. I think it’s jealousy from some people on here, they and it tough so song want anyone else having an easier time. I had it really fucking tough and will do everything 8 can to make sure my family never have to go through that now I’m in a position to help them. Some parents are just cunts.

His mum is not throwing him out. She is still setting his “keep” well below what it would cost him to live independently, and at a level he could easily save £1k a month, if he can keep his social spending to around £100-120 a week.

This young man has an inheritance and already had a pot of savings and the OP hasn’t suggested her nephew talk properly to his mum about why she’s moved the rent level, or talk about how much he’s saving a month or what his target amount is. She’s just gone straight to offering him a cheaper option and decided her sister’s motivation must be evil.

There is no timeframe on any of this, no idea of saving targets or what he is managing to save a month now. After he pays his mum now (which includes food) he has around £1500 a month, what he actually saves of that, the OP doesn’t know and doesn’t think she needs to know before offering to have him stay indefinitely and blowing up her relationship with her sister.

No one seems to think this above average earning man should be treated like an adult, this isn’t about saying “we had it tough so you should too”, but “he’s an adult with a professional job who went running to his aunt, not having a proper conversation with his mum.”

His mum is still offering to have him live with her, subsidising his lifestyle so he can save. He just thinks he should get an even better deal with his aunt. That he even asked is incredibly entitled.

TheWorldsInsane · 19/09/2026 17:55

You have no idea what OP has spoken to him about. She said she wouldn’t tell him he had to save a certain amount but they’ve obviously talked about things as she knows how much he has saved and his plans for the future. She said the situation has been going on for a while so I imagine lots of conversations have been had between mother and son, sister and sister as well as between OP and her nephew as she said she knows him well. No timeframe? she has said he wants to buy in the next 2 to 3 years but that she is happy for him to stay longer. You’re making up your own narrative, your post is full of bs. You clearly have your own issues. Are you OPs sister? 🧐

Yetone · 19/09/2026 17:57

FancyBiscuitsLevel · 19/09/2026 17:45

His mum is not throwing him out. She is still setting his “keep” well below what it would cost him to live independently, and at a level he could easily save £1k a month, if he can keep his social spending to around £100-120 a week.

This young man has an inheritance and already had a pot of savings and the OP hasn’t suggested her nephew talk properly to his mum about why she’s moved the rent level, or talk about how much he’s saving a month or what his target amount is. She’s just gone straight to offering him a cheaper option and decided her sister’s motivation must be evil.

There is no timeframe on any of this, no idea of saving targets or what he is managing to save a month now. After he pays his mum now (which includes food) he has around £1500 a month, what he actually saves of that, the OP doesn’t know and doesn’t think she needs to know before offering to have him stay indefinitely and blowing up her relationship with her sister.

No one seems to think this above average earning man should be treated like an adult, this isn’t about saying “we had it tough so you should too”, but “he’s an adult with a professional job who went running to his aunt, not having a proper conversation with his mum.”

His mum is still offering to have him live with her, subsidising his lifestyle so he can save. He just thinks he should get an even better deal with his aunt. That he even asked is incredibly entitled.

At £800 ( or even the £750 the mum offered to reduce it to) his Mum would be making profit from him. Who does that to their children? Even if you need the money, the only costs your child should be contributing to are food and utilities. They should not pay towards a mortgage or rent and that are a given anyway.
Did you charge your children these sort of figures? If so why?
We didn’t charge our children anything.

godmum56 · 19/09/2026 18:09

I find it so funny that people think that people can't go from living with parents to running their own home.

godmum56 · 19/09/2026 18:12

FancyBiscuitsLevel · 19/09/2026 17:45

His mum is not throwing him out. She is still setting his “keep” well below what it would cost him to live independently, and at a level he could easily save £1k a month, if he can keep his social spending to around £100-120 a week.

This young man has an inheritance and already had a pot of savings and the OP hasn’t suggested her nephew talk properly to his mum about why she’s moved the rent level, or talk about how much he’s saving a month or what his target amount is. She’s just gone straight to offering him a cheaper option and decided her sister’s motivation must be evil.

There is no timeframe on any of this, no idea of saving targets or what he is managing to save a month now. After he pays his mum now (which includes food) he has around £1500 a month, what he actually saves of that, the OP doesn’t know and doesn’t think she needs to know before offering to have him stay indefinitely and blowing up her relationship with her sister.

No one seems to think this above average earning man should be treated like an adult, this isn’t about saying “we had it tough so you should too”, but “he’s an adult with a professional job who went running to his aunt, not having a proper conversation with his mum.”

His mum is still offering to have him live with her, subsidising his lifestyle so he can save. He just thinks he should get an even better deal with his aunt. That he even asked is incredibly entitled.

His mother can set his "keep" at where she wants to and that is her choice. Take it or leave it is his choice. He has made a deal with his aunt which suits them both better. I's not his mother's business.

DontSayItsOver · 19/09/2026 18:14

Sorry but charging your child £800 is fucking evil. I understand they would pay more living out but it’s your own child for god sake. Have some shame. Our adult DC pays £200 a month and the odd takeaway.

YearsOfLife · 19/09/2026 18:20

I didn’t need to keep suggesting that my nephew speak properly to his mum about why she put his rent up because he was already having those conversation with her. I have encouraged both my nephew and sister to keep open communication throughout all of this.

I have talked to my nephew about how much he is saving and how much he would like have in savings before buying a property. I know these figures but you don’t need to.

I have not gone straight to offering him a cheaper option. We had many conversations about the best course of action for everyone over a number of weeks.

There is a timeframe. I have said he wants to buy a house with his girlfriend when his wage increases significantly in the next few years. If that doesn’t go to plan, he can buy without her but I am happy for him to stay longer. You don’t need to know every detail.

He has acted and been treated like an adult, at least by us, throughout. It’s ok for even adults to ask for advice and help from people who they love and trust.

He is not entitled in the slightest. He is a genuinely lovely person who I am proud of. He has dealt with losing his dad and has had many setbacks in life but has come through them all to be resilient, kind and hardworking.

You are making things up. I’m not sure what your problem is.

OP posts:
InterIgnis · 19/09/2026 18:24

FancyBiscuitsLevel · 19/09/2026 17:03

This was in response to the OP claiming her nephew and adult children living with her was the same as them living as a group independently. It’s really not! It’s fine, most people can learn fast how to run a household (although houseshares teach different skills to moving out to live alone or with a partner!), but living as a young adult with older family in their home, in the “child” position is very different to being in a houseshare situation.

Why does he have to live in a house share at all? It isn’t a requirement for independence.

The relationship OP has with her nephew is independent of the one she has with her sister. He wasn’t prepared to accept his mother trying to profit of him, so he made other arrangements that will allow him to save faster for a deposit. What’s wrong with that, exactly? That he isn’t struggling like you seem to think he should have to? That his mother is upset because he didn’t in fact have to suck up the increase she was trying to impose? Too fucking bad 🤷🏻‍♀️

euff · 19/09/2026 18:28

He is an adult that you say is lovely and responsible. You and your family are happy to have him live with you. I don’t think anything else matters.

If you weren’t happy to have him it would be different but you are. I don’t see why when you are happy to have him you should refuse him so he’s more of a man in other pp’s eyes or so he can contribute to his mums household.

The only people who are unhappy are his mum and partner because they cant make money from him/ save whilst he is there. Throwing a tantrum because he’s chosen to live elsewhere is ridiculous and nasty. It would be different if he was a little shit and you were enabling him.

I would never have my nephew as he is horrid! If he was like yours it would be an entirely different thing.

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