Am I a laughing stock?

What nasty feedback OP but remember it's not your whole personality. People obviously love coming to the towers for parties. of that's all they can find to laugh about you then you are doing ok!

I think it’s funny. Anyone who can’t see it as you taking the mickey out of yourself is a dickhead who doesn’t deserve your company. Carry on.

Its really silly and not a bit funny.

I'd find it amusing OP, I sometimes say something similar. I don't say it very often and my friends know it doesn't mean I think my home resembles Longleat!

I worked with someone who also used to refer to his house as surname Towers, it was a jokey reference just like mine and the OP's is.

I think it's fine. You are gently mocking yourself not others. Only a knobhead would judge. I'm sad for you that someone has made you feel this way. I wouldn't laugh at you

It’s just a joke based on irony.

Sadly there are way too many dick-for-brains out there who spend their time picking on others for the sake of it.

I’d go big on this one. Get some invites (very cheap from Internet) printed with ‘The Towers’ on them and invite them to a get together to celebrate peace and reconciliation- at ‘The Towers’ of course.

Serve them spam butties with ketchup and some cheap wine and beer - enjoy the expressions on their miserable, snotty faces!

When they’ve gone get out your favourite drinks and food and party on with your real friends.

OP: it’s completely harmless and it was OTT for your sister and mum to be so nasty about it.

Would hardly register with me.

I have a friend, her DH is called Mal , we all call her house Malory Towers. (It probably irritates her… but not enough to get nasty or annoyed)

I'd double down and start calling it the "Jackson Dungeon" or "Castle" or sth 😌

OP, perhaps the difference is between saying it and writing it. I might refer to my (very ordinary) house as “Chateau (surname)”, but I’d never write it.

Sounds like your sister is resentful of you for whatever reason.

Yes very cringey. It’s one thing to say it once in a while in an ironic or tongue in cheek way,
but to actually write it on invitations makes
you look like a massive twat.
Your sister is exactly right and yes you are undoubtedly a laughing stock.

Absolutely!! I voted YABU for being so upset/annoyed. You mean't it as a joke and people are either taking the mickey or rolling their eyes - like people do in response to jokes.
Your sister sounds a misery. I'd be tempted to get a plaque or sign made. Ham it up some more.
If people think you are being serious/pretentious about your 3 story town house, then frankly the joke's on them.
Please don't stop.

My last name starts with an H - pretend like Hamilton.

Everyone calls our house Hamilton HQ.

I think it’s cool.

Your house sounds like a lovely warm place, full of love and laughter - the perfect home.

Ignore the boring farts with no sense of humour.

It wouldn’t bother me, your family still and like judgey twats. Try to not dwell OP

Very often it's not the joke itself that starts to irk people but the person who starts it doesn't know when to stop. It's the "element of obliviousness" that rubs people up the wrong way. The house name was perhaps funny the very first time but dragging it out for years becomes very cringey and pick me. Usually by people who take things very literally and don't really understand social cues.

Are you by any chance neurodivergent?

Maybe they have another problem, are jealous, or whatever and instead of facing their miserable selves, they have a go at you. Show'em some teeth. If bitching then bitch back. Some people only get raw power. We are still very much like our primate relatives.

This 👆 with knobs on.

Do it!

Immediately thought of this! 🤣

Possibly, but it was at this point OP's sister could have kindly said something to OP about it. OP's hurt because her 'D'S has given her the impression that no-one has found it funny for years, but that's just what her 'D'S says and none of us knows if it's true or not - it's much easier to say you don't like something whilst claiming your opinion is backed up by others. Personally, I think OP's 'D'S has been a spiteful cow - even if it's true that the joke has worn thin generally, OP's 'D'S could have told OP a lot sooner and a lot more kindly.

Start calling it "the property formerly known as Jackson Towers"

Actually, as someone says, it is the sister who needs talking to, your friends might be okay. But still. It doesn't sound nice.

I agree. It’s pretty harmless! I’d continue to use it now OP, maybe change your social media to it. Strange how it winds your sister up so much!

I suppose by persisting with it, people might be finding it annoying (other than your sister, of course). It does have a Lady of the Manor air about it that, though initially funny, might now seem like you really think you are Lady Bountiful and your place is the place to be (aka better than anywhere else).

A joke is only funny for so long...... Drop it from now on, but don't angst about it. No need to feel humiliated.

If she was actually "blunt as fuck" she'd have told OP years ago. Bitching about someone behind their back for years and then finally, sneeringly telling them you've been bitching about them for years is not being "blunt as fuck". It's being a massive bitch.