AITA for refusing to give my house to my sister?

Shirley Stafford Hours
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A young couple, both 25, beam with pride as they unlock the door to their newly bought four-bedroom house in the UK, a cozy haven for themselves and their beloved dogs—a playful Bernadoodle pup and a loyal rescued Bulldog. After years of hard work, this space feels like a triumph, a sanctuary tailored to their childfree life, with room to romp and relax. Their parents cheered the milestone, and the future looked bright.

Enter the sister, 26, with a toddler in tow and another baby on the way, dialing up with a bold request: to move into their home, offering rent so the couple could uproot and lease elsewhere. A fiery clash erupts accusations of selfishness and snide jabs at their “mutts” fly. Even Dad nudges a favor, but the couple holds tight. Reddit’s buzzing with this tale, and we’re here to dig in!

‘AITA for refusing to give my house to my sister?’

So me and my boyfriend recently bought a house together. We're both 25, and we were able to buy a house relatively early since houses aren't too expensive where I am. We also live with our 6 month old Bernadoodle Puppy, and our 5 year old Bulldog who we rescued.

We don't plan on having children, so the primary reason's for buying a house was to have room for ourselves and our dogs. I should note that my parents are supportive of my decision. My sister, who is 26, is not childfree however. She currently has a 1 year old daughter, and recently found out that she is pregnant again.

Last week, she called me to ask if she could live in our house. She offered to pay £1200 per month in rent, so that we could rent out a nice place of our own. I asked why she wanted to do this, and she explained that she wants room for her children (our house has 4 bedrooms, which is quite large for a house in the UK).

I explained to her that as much as I would like to be able to help her, me and my boyfriend worked hard to buy a house, so we didn't want to leave and go back to renting. She immediately got really pissy with me.

She said that I'm 'selfish' for buying a house when I don't want kids, when there are so many families, such as hers, who could use my house.  She also critiqued me for buying a bernadoodle puppy (side note: we would've rescued if we could, however, none of the rescues in our area had a bernadoodle, so we made sure to buy from a reputable breeder).

After I told her that she wouldn't be getting to live in my house, she told me that me and my husband will never have a family, regardless of how many 'mutts' we fill it with. I haven't spoken to her since.

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Today, my father called me. I told him about how ridiculous my sister was being, however, he sided with her, although, not nearly as crazily. He said that I should 'think about it', since I'd be doing my sister a 'favour.'. AITA for not doing this for my sister?

Buying a home at 25 is no small win, and this couple’s pride in their four-bedroom retreat clashes with a sister’s bold bid to move in. She’s got a toddler and another on the way, offering £1200 monthly to nudge the owners out to rent elsewhere. Her fiery retort calling them selfish and jabbing at their childfree life and dogs hints at entitlement, while the couple digs in to protect their achievement.

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This dust-up echoes a wider tangle: family expectations can twist when lifestyles differ. Studies show blended families or siblings often spar over resources, especially when kids enter the mix, but having children doesn’t hand you a key to someone else’s property. The sister’s push, paired with harsh words, feels more like frustration than a fair claim.

Dr. Sarah Thompson, a family therapist, has noted in articles, “Boundaries are vital when family demands clash with personal achievements your home is your domain, not a communal resource.” This wisdom fits here: the couple’s hard work bought this house, and their choice to stay childfree doesn’t owe anyone a room.

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Dad’s gentle nudge for a “favor” overlooks their effort. A wise play is standing firm with a calm line: “We earned this home; it’s ours to enjoy.” If Dad’s worried, he can help her find a place.

See what others had to share with OP:

Reddit weighs in with gusto, cheering the couple’s resolve. The crowd sees the house as their hard-earned castle, not a handout for a sister with kids. No one owes anyone a home, the consensus holds, and the sister’s barbs only dig her hole deeper. Dad’s nudge gets a side eye his support can fund her own path.

Zillah-The-Broken − NTA. Your dad can give her his house as a 'favor'. edit: dudes, this blew up overnight, thank you all for the awards!

husbandbulges − NTA, she can rent a place elsewhere. Ignore your family and enjoy your house.

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ScienceNotKids − NTA. This is psychotic.

Mackymcmcmac − NTA I live in the UK, my aunt has a four bedroom house with garden, driveway etc and her mortgage is less than £900 a month. If she can afford £1200 a month, she can find a suitable home to rent or buy herself.

HowardProject − NTA - the entitlement looms large with this one! If Dad thinks somebody should give your sister a house he is free to do so himself and if he cannot manage it then he has no business criticizing your ability to manage your budget better than they have.

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peterhala − nta - don't do it - you'll never see the rent money - she is definitely trying to steal from you. if your dad is so concerned he can help her with renting a decent sized place.

Moggetti − NTA. Also, it’s not just your house. Your sister thinks your boyfriend should subsidize her lifestyle too? Also, if your dad thinks it’s such a great idea, why isn’t he moving out of his house and giving it to her?

Master-Manipulation − NTA You paid for the house. You put the hours of work into making money, searching for the house, and moving in. What has your sister contributed to this house? Sounds like nothing. And having kids is not a free pass to live in your house and kick you out.

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Express_Course_4661 − NTA for the house thing. YTA for calling an *overpriced mongrel/crossbreed* breeder a 'reputable breeder' .

bamf1701 − NTA. If your sister wants to buy a house, then she can save the money for it. Honestly, her entitlement is truly stunning. Just because she has children does not mean she deserved your house, something you and your BF worked and saved for.

I'm guessing the money she is giving you would not let you rent a place as nice as the one you have. This sounds like some kind of scam where she can find a way to rent a larger place than she can afford for cheap.

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Also, if she wants a favor from you, getting pissy is not a way to do it. Your father isn't any better, siding with her. If your father thinks his grandchildren deserve a bigger place to live, he can either give her his place or give her money himself.

This tale of a dream home, family friction, and a firm stand stirs the pot with heart and heat. The couple’s fight to keep their four-bedroom haven shines against a sister’s fiery demands and a father’s soft plea. Reddit and experts back their boundary, leaving us hooked on the drama. Share your thoughts, stories, or wisdom below—what would you do if this landed in your lap?

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