Please or to access all these features

AIBU?

Share your dilemmas and get honest opinions from other Mumsnetters.

Please help family and rent

266 replies

limeandwater · 20/03/2026 10:10

Lurker of ten years plus, and looking for some anonymous and honest feedback.

Approx 5 years ago sister split from husband. On the surface they lived a very nice life, but long story short her ex had mortgaged everything against his business and they lost the lot and were left with nothing.

My husband and I are fortunate enough to have a number of properties. We let her and her two kids stay in one of our houses and used words to the affect "it's yours rent free for as long as you need it."

She met a man approx two years ago who we like and is good to her and the kids and 3 months ago she asked if he could move in. We said yes - but presumed rent would follow.

To give you some non specific info the man in question earns approx 60k per year and rents out the flat he was living in for £1600pcm which I imagine would more than cover his mortgage. They live a nice life if that matters. Holidays, meals out, etc.

We are in South East and the 3 bed house she lives in would rent at approx £2800 per month. My husband thinks its cheeky that no offer of rent has been made. He doesn't want or expect market value - and in fact would probably only want about half.

I agree with him, it's a bit cheeky, but then think back to our wording 5 years ago.

My husband is a lovely man and never gets angry, but last Sunday we went out for Sunday lunch and we split the bill. I could tell tell he was annoyed and asked him what was wrong - and he stated "he lives rent free in our property, he could have got lunch."

Who is right and what do we do?

OP posts:
limeandwater · 20/03/2026 13:57

BeenThereBackThen · 20/03/2026 13:54

she should have been embarrassed to NOT bring it up, come on🙄 I’d love to live rent/ mortgage free too!

£2800 a month, 5 years = £168k. That’s how much she has benefitted from you so far.

If you sell, make sure it’s at market rate, she already benefitted by 168k from you.

I suspect they will never be able to buy it.

Even if he is mortgage free (and I don't know that he is) the property is worth circa 3.5 times more than his aprtment.

Taking on an approx (and this is based on him being mortgage free) 700k mortgage in your mid 40's with a 100k household income doesn't seem achievable to me.

OP posts:
BeenThereBackThen · 20/03/2026 13:54

limeandwater · 20/03/2026 13:24

Thank you for all your replies, but nothing to worry about.

She said she didn't approach me as she was embarrassed to bring the subject up. I am not so wet behind the ears that I don't suspect they were actually enjoying living rent free.

Is starting to pay £1750 pcm from April 1st.

Did funnily mention buying the house at some point, but partner would need to sell his property first so that is some way down the line.

she should have been embarrassed to NOT bring it up, come on🙄 I’d love to live rent/ mortgage free too!

£2800 a month, 5 years = £168k. That’s how much she has benefitted from you so far.

If you sell, make sure it’s at market rate, she already benefitted by 168k from you.

outerspacepotato · 20/03/2026 13:54

My sister is my best friend, this isn't going to get legal in a million years.

She knows you won't get legal.

As for best friend, examine that assumption more carefully. Your sister has been living off you and your husband for the last 5 years. I can see putting her up temporarily while she got back on her feet after her marriage breakdown. But she's been taking advantage the tune of over £100k and moved in a cocklodger bf and they won't even buy you a damn lunch. That's not a friend, much less a best friend. Embarrassed to bring up paying her way, my ass. Plus, her bf might not be a good one, given he's moved into her free house, didn't offer rent or even to cover your lunch.

I'm glad you brought it up to her and she's agreed to pay some rent.

limeandwater · 20/03/2026 13:53

Husband is happy, it was never about the money.

I think everybody is happy with this result.

They get a reduced rent and hubby no longer feels like he is being taken advantage of.

OP posts:
mumofoneAloneandwell · 20/03/2026 13:51

Decent result - i dont judge your sister so much as her man tbh but its done now

Anewerforest · 20/03/2026 13:35

limeandwater · 20/03/2026 10:18

Reading this it seems it's probably our fault and lack of good communication on our part.

I will have the convo.

Fraid so. You told DSis it was rent free so of course she continues to assume that unless you say differently. But it's not too late to ask for some rent and obviously it caused so offence. You will enjoy the extra income! But remember they will have tenants rights and you will have to go through all the processes to be a private landlord - gas and electric inspections etc.

Nanny0gg · 20/03/2026 13:33

Nanny0gg · 20/03/2026 13:30

You were very silly

Now you'll have to talk

Cross post

Good result.

Nanny0gg · 20/03/2026 13:30

limeandwater · 20/03/2026 10:13

Yes you are probably right, there was a presumption on our part that it would follow. We have been a bit silly.

You were very silly

Now you'll have to talk

limeandwater · 20/03/2026 13:24

Thank you for all your replies, but nothing to worry about.

She said she didn't approach me as she was embarrassed to bring the subject up. I am not so wet behind the ears that I don't suspect they were actually enjoying living rent free.

Is starting to pay £1750 pcm from April 1st.

Did funnily mention buying the house at some point, but partner would need to sell his property first so that is some way down the line.

OP posts:
19lottie82 · 20/03/2026 13:07

Your sister is a cheeky fucker. I can’t even imagine not offering something, even when she moved in at the start.

SomeOtherUser · 20/03/2026 13:05

Voted YABU because why would you "presume" instead of asking? Agree they should be paying rent though!

CoCoJones26 · 20/03/2026 12:56

Hopefully you're meeting now and will have an update for us all soon!

Thingsthatgo · 20/03/2026 12:51

they are taking the piss, but the problem has been caused by a lack of communication. You said it’s free for as long as you need it, and you have said nothing else since. It’s time to talk.

nomas · 20/03/2026 12:48

limeandwater · 20/03/2026 11:26

I am not worried about that, we know about RRB hence why we have issued a number of section 21's of late.

My sister is my best friend, this isn't going to get legal in a million years.

Issues section 21s to her?

She sounds like a CF. Start charing them FULL rent.

wherearethesnacks · 20/03/2026 12:48

It's outrageous that your sister has a household income of £100k and thinks she should be allowed live in someone else's house for free. You may be rich but she is also well off.

Arlanymor · 20/03/2026 12:48

I would use the new rules coming in next month as an excuse to bring up the topic now. Set the slate clean and get an agreement going forward. I am a bit baffled as to why this wasn't a conversation three months ago, but we are where we are.

Heronwatcher · 20/03/2026 12:45

Just talk to her about it. Say that you think if her partner has moved in and he’s getting rent on his own place it’s fair that rent starts being paid on their current house. Remind her that you obviously bought the house she’s in to generate an income (maybe mention uni fees) and whilst you’ve been happy to help her, it hasn’t been doing this and obviously him moving in and keeping his own income has changed things. Obviously if she’d rather move out with him that’s fine too.

The new partner does potentially sound like a CF though so don’t be surprised if she ends up back with you!

Middlechild3 · 20/03/2026 12:44

Eenameenadeeka · 20/03/2026 10:12

Surely when she asked if he could move in, that was the time to tell them you'd like him to pay, given that you've previously said she could have it rent free as long as they need.

This, he's now making a saving by living in your investment rent free!!!!!! Speak up.

Myalternate · 20/03/2026 12:43

limeandwater · 20/03/2026 12:20

I don't think they would be able to afford it.

You don’t need to sell it for ‘best’ market value, just what they can afford. You’ll not be losing money as currently you own a property that you’re receiving nothing for.

Winter2020 · 20/03/2026 12:41

limeandwater · 20/03/2026 12:20

I don't think they would be able to afford it.

Hi OP,
As this is your sister and you don't need the rental money particularly you could consider offering her a private mortgage to buy your house.

In a private mortgage basically your sister's payments buy the house from you paying a person rather than a bank.

I don't think there is normally any tax payable on the receipt of the payments as she would be paying you to buy your asset but if you charge interest tax would be due on that. Not sure how the property being a business might affect that.

Capital gains is due when you dispose of a property as I'm sure you know. It is due on the rise in the value of the property when you bought it to when you sell it even if you sell it under value or gave it away.

You would need a legal agreement and the property after being put in your sister's name would have a first charge registered against it (like a bank does when there is zero mortgage) to protect your money.

As you are in an awkward situation where you want to help your sister but feel like it is beginning to take the piss - so worth thinking outside the box.

If the house was worth 500k and you charged £1500 a month (no interest) it would take around 28 years for your sister to pay for the house in full.

MrsElijahMikaelson1 · 20/03/2026 12:40

Right Sis,
now that you are happy and settled, which i am thrilled about, we think it is time for you and partner to start paying some rent. We aren’t asking for market rent but you will need to start paying something; when you first moved in that was a different proposition and circumstances have changed. As you know property management is our business and livelihood and the house you live in is not generating currently.

BeenThereBackThen · 20/03/2026 12:33

Plot twist… is it possible that your sister is already charging her partner rent, having conveniently left out the fact she lives there for free?

That would potentially explain why her partner (who lets assume for a moment is a really nice and decent man) didn’t feel the need to pay for lunch and didn’t feel awkward about splitting the bill.

Notquitethetruth · 20/03/2026 12:24

limeandwater · 20/03/2026 11:39

I highly doubt that will be the case.

I am sure she is going to be terribly embarrassed.

As she should be. What a lovely sister and brother in law you have both been but after 5 years and moving another man in, she has made no effort to offer anything.
I would ask her plans are going forward and long term for accommodation. She is the female equivalent of the aptly named cocklodger and has taken advantage of your generous nature. Can't believe they both thought it was ok not to even offer to pay for your meal. Your husband was right to be upset

BruFord · 20/03/2026 12:23

limeandwater · 20/03/2026 12:20

I don't think they would be able to afford it.

@limeandwater Your sister needs to start working more than three days a week if she wants to maintain her lifestyle, doesn’t she?!

Honestly OP, she’s making a mug of you-perhaps she wasn’t when she first split from her ex, but she is now.

limeandwater · 20/03/2026 12:20

Myalternate · 20/03/2026 12:08

Have you thought about selling the property to them especially as you don’t have need of an income from it.

I don't think they would be able to afford it.

OP posts: