Please or to access all these features

AIBU?

Share your dilemmas and get honest opinions from other Mumsnetters.

AIBU not to let my sister stay in our flat while we're away?

45 replies

Ifiwere · 04/10/2026 11:55

I live in London with my partner and we’re renting a flat. We’re going away for about 3 weeks in November. My sister has been living abroad for the last few years doing seasonal work and travelling. This summer she happened to be working somewhere much closer to the UK and it was looking like she was finally going to stop the seasonal work and move back to the UK.

Her plan is to move to London for a few reasons, including pursuing a business/career opportunities has, being closer to friends, just wanting to live in the city and having better job opportunities while she gets herself established. She’s nearly 30 and the plan was for her to spend October living with our parents just outside London, use that as a base to get everything sorted, see friends etc, and find a room in London to move into around the beginning of November. She definitely can't afford her own flat, so it would be a room in a house/flat share.

She’s now asked if she can stay in our flat while we’re away. It actually makes perfect sense for her. She’d have somewhere of her own for a few weeks, wouldn’t have to travel in from our parents' house for viewings, and it gives her a bit more time to find somewhere rather than rushing into a room. She’s said she’ll cover the bills and even offered to pay me some rent. I don't need the money though. Without her in the picture, we'd just be paying the rent as normal and it was never an issue. I also know that if I charged her what we're paying, it would eat into a fairly big chunk of the savings she needs to live off while she gets established.

The thing is… I feel weird about it. There’s no dramatic reason. She’s not a drug addict, she’s not going to trash the place, and I’m not worried she’d deliberately do anything. She is fairly clumsy, but if she broke something she'd be absolutely mortified and would do her best to replace it. We’re not estranged or anything, but we aren't particularly close either. My partner says he genuinely doesn't mind and is staying out of it, so it’s basically down to me.

Part of me thinks this is such an easy thing to do for my sister and I'd be a bit of a cow to say no. We’ll literally be away anyway, and it would help her out enormously. But another part of me just really doesn't want to. I don't particularly like the idea of someone living in our flat while we're away, even if it is my sister, and I can't quite explain why. I also suspect she'd be quite hurt and possibly resentful if I said no, which makes me feel even worse about saying no.

So AIBU?
YANBU, it’s your flat and you don’t need to justify not wanting her there?* *
YABU, she’s your sister and this is a pretty easy favour to do, you’re a cow to say no ?

OP posts:
Matildatoldsuchdreadfullies · 04/10/2026 12:00

I would do it for my sister - but then I was very close to her. And it doesn’t seem like there’s a particularly strong reason not to allow this. However, it is your home.

If you choose not to do it, for the sake of family relations going forward I would be inclined to say that your DP feels a bit uncomfortable about it (but would love to see your sister when you’re all in London).

Shinyandnew1 · 04/10/2026 12:02

I wouldn’t want someone that I wasn’t close to staying in my house. I would be very happy for my friends or family to stay, but we are all close.

Crestofapage6421 · 04/10/2026 12:05

Interesting Op; what are your spidery senses telling you? Our sub-conscious is designed to keep us safe. Can you drill down in to why you are so résistant to this idea in a more specific way?

Is it because you are a very private person generally and it’s nothing personally related to her?

Is it because you think she may take advantage and ask to stay when you return?

Or something else?

motherhoodisntfortheweak · 04/10/2026 12:08

My concern will be my bills going up when am not even there however if money isn’t an issue then I’d let her stay but since you’re not close…… that’s another issue.

Rosepinks · 04/10/2026 12:12

Something is stopping you.
What is it?

I would do it for someone I loved and trusted as in this case it would really help them out.

Walkacrossthesand · 04/10/2026 12:14

My first thought would be, what will she do when you return? She’ll have had the ease of a few weeks easy travel to job interviews, if you have a spare room the hints may start about staying there after you’re back.

Is her personality kind and respectful, is she one for rummaging through your paperwork & personal things given half a chance, how well does she/you both get on with parents,etc etc? As pp said, there will be a deep seated reason why you’re uncomfortable- dig for it!
Oh, and don’t claim that DH is uncomfortable- that will come out one day and blow up in your face.

Yupstillhere · 04/10/2026 12:14

I think it's pretty mean if you don't let her. She's your sister, she's family, you might need a favour in the future. Your home will be safer surely with someone there whilst you're away. I think you should put yourself out, I would for family.

thepariscrimefiles · 04/10/2026 12:17

Will she just be staying for the three weeks that you are away or will she expect to stay longer?

Will your parents be upset if you don't let her stay?

Svet19 · 04/10/2026 12:19

Check your tenancy agreement. Most do not allow having guests' staying for longer than a few days or subletting.

EightSteps · 04/10/2026 12:20

I'd say yes but make it clear what the rules are. Especially the date she has to move out by, the state you expect the flat left in, and whether you are happy for her to host.

But if you really don't want to, don't.

Ifiwere · 04/10/2026 12:25

She made it a point to say she’d not ask/ want to or assume she’d able to stay any longer than the time we’re away (which I don’t really have reason not to trust or think she’d too against this ) hopefully she’ll have found a room by then but if she hasn’t she can go back to parents or worse comes to worse stay with a friend an hour away .

OP posts:
bouncingbubbles · 04/10/2026 12:29

My gut tells me that you’re a bit jealous of her having been able to be fooloose and fancy free and go abroad and now she wants to settle down you don’t feel that it should be an easy ride for her. For sure your not wanting to help her out will affect your relationship into the future and you will regret not doing this

HundredMilesAnHour · 04/10/2026 12:31

To be honest, I don’t understand why you wouldn’t offer to let her stay for a few weeks whether you are away or not? So given you’ll be away, I’m even more baffled.

Delphiniumandlupins · 04/10/2026 12:37

Would you have her visit if you were there? Would you leave her alone in your home for a few hours while you were at work? Do you feel the same about your parents/friends in your home? Perhaps if you can work out just why this makes you so uncomfortable it will help you.

I think I'm quite hospitable but would never take part in a home swap holiday or use a house sitter for holiday dog care. I think I would let my sister stay in your situation though, and we're not particularly close.

jay55 · 04/10/2026 12:38

I’d feel weird about it too but would have let my sister do it. It’s always good to have someone collect the post etc.
I’d mostly feel annoyed I’d need to clean/tidy to a greater extent than planned.

TooManyNoneQuestions · 04/10/2026 12:45

Can you blame the landlord if you say no, even if there isn't actually rule in your tenancy agreement preventing this? Some rented places have rules about no guests for more than X number of consecutive nights. Or that you can't have overnight guests if you are not also there. If your landlord found out they could kick you out / wouldn't be insured etc.

BookShark · 04/10/2026 12:45

I'd let her, but I wouldn't be happy about it. My in-laws always stay in our house when we go away, and I really dislike it, but there's no reason for me to refuse so I'm stuck with it.

I don't like having to leave the house clean and tidy (because they would do it if I didn't - and tell me about it). I don't live the invasion of privacy - I'm sure they're not going through our stuff, but if still feels uncomfortable. I don't like coming back to a house where things have been moved around - not intentionally, but obviously it happens. And I don't like coming back to needing to wash sheets and towels etc.

I fully appreciate these are all minor things, and "me" issues, when DH tells me it's happening again I just deal with it. But I don't like it and can understand why you wouldn't want to.

CatSquirrelDuck · 04/10/2026 12:50

bouncingbubbles · 04/10/2026 12:29

My gut tells me that you’re a bit jealous of her having been able to be fooloose and fancy free and go abroad and now she wants to settle down you don’t feel that it should be an easy ride for her. For sure your not wanting to help her out will affect your relationship into the future and you will regret not doing this

That was my gut take as well ...

SnappyPenguin · 04/10/2026 12:58

The fact you've asked this says your uncomfortable. Say no.

Nearly50omg · 04/10/2026 12:59

She won’t leave when you come home you realise as she will will have some excuse! NO if you don’t want her to stay in your house while you are away, poking around your stuff and pretending she lives there then you don’t have to have any other reason other than “that doesn’t work for us”

MargoisanA1arsehole · 04/10/2026 13:00

If your flat is rented, would it be allowed anyway? Just a thought.

Nearly50omg · 04/10/2026 13:00

Actually someone mentioned landlord - I’ve had it in contracts and sure it’s a thing that you can’t let someone stay in your rental property for longer than a week or so if they aren’t on the tenancy? 3 weeks is far too long for any landlord to be happy with

Maisymouse2 · 04/10/2026 13:06

I would let her stay.
An extra added bonus of a house sitter to keep your house safe

Shinyandnew1 · 04/10/2026 13:11

BookShark · 04/10/2026 12:45

I'd let her, but I wouldn't be happy about it. My in-laws always stay in our house when we go away, and I really dislike it, but there's no reason for me to refuse so I'm stuck with it.

I don't like having to leave the house clean and tidy (because they would do it if I didn't - and tell me about it). I don't live the invasion of privacy - I'm sure they're not going through our stuff, but if still feels uncomfortable. I don't like coming back to a house where things have been moved around - not intentionally, but obviously it happens. And I don't like coming back to needing to wash sheets and towels etc.

I fully appreciate these are all minor things, and "me" issues, when DH tells me it's happening again I just deal with it. But I don't like it and can understand why you wouldn't want to.

No reason to refuse?! I would say there was no reason for this to ever begin!

How did it happen?! If you have pets, I understand that but otherwise…?

Ifiwere · 04/10/2026 13:14

MargoisanA1arsehole · 04/10/2026 13:00

If your flat is rented, would it be allowed anyway? Just a thought.

I would (very likely) my landlord quite reasonable about this sort of things

OP posts: