Thinking it’s weird that his 18 year old will have the master room

You’re selling your home to move in? How long are you trialling living together before you take that leap? When you do this are you keeping finances separate and ring fencing that money?

Sorry what? You are upgrading to a much nicer home than you can afford yourself, and are moaning that you don't have a walk in wardrobe? In addition, you want to turf out a person who lives there full time from a room it makes perfect sense that she currently has due to usage/study facilities. You sound awful and I'd be rethinking this if I were your DP.

You’re moving from a 250k house into a 2.5 million pound mansion, be grateful for the room you have. If you want a walk in wardrobe, then get yourself a better job to pay for one

Wow, no way. If someone tried to unsettle my DC from their home they would not step foot into the house again esp if you cannot even understand why you are wrong to even suggest this and not be able to empathise with his daughter.
The fact that you had to ask an online forum (and expect support) suggests to me you have no concept of how to handle the dynamic of moving into an established family set up.
This is a conversation to have 3-4 years down the line.
You are not coming across well in this thread.

Oh no, however will you cope without a walk in wardrobe 🙄🙄🙄

Absolutely.. Not a great start if you want your own way already. You haven't got a clue about teenagers. Are you planning to bring a baby into this set up. I hope not for everyone's sake.

I think it makes perfect sense that she has the bigger room to be honest. Like he says, as an adult you spend most of your time in the kitchen/living area, you just go to your bedroom to go to sleep. Teenage girl will basically live in her bedroom.

Also can’t imagine someone inviting me to move in and then me suggest they should take their daughters room from them! Not you house, not your child, not your business.

It's not weird that she keeps it. Her dad moving his partner into her room when she's away at uni would be awful. How do you get on with his daughter now?

It can be really difficult moving in to an established family home. I did it and found it harder than I thought, and we moved into a new house we bought together a couple of years later. It's definitely worth talking through how you and your partner can make the house feel like yours too. (I'm thinking decorating your bedroom, and not just keeping his sofa/kettle/bathroom bin because it's already there if yours is nicer/also adequate.) Could the guest bedroom be your space?

If you live together for two years, and the relationship is solid, and you think you're happy to keep living in his house long-term rather than buy something together, then have a conversation about what will happen with the rooms after she finishes uni. You might be happy in 'your' room by then, or you might agree to swap when she's finished uni/is 24 like your son when he moved out/30 when you really expect her to leave.

In London you'll almost certainly be living with his daughter for a long time so you need have a good relationship with her too to make this living situation work.

Looking forward to the thread horrified that he’s leaving the £2.5m house to his daughter and not OP

YABU

I think that was rude of you.

Massively unreasonable

His point is a good one. You have the study for more storage. You don't need to move. Drop it and ask again when she actually moves out. If it lasts that long.

There is tons of space for everyone but you want this girl to give up her bedroom for you. Isn’t it enough for her to have to suddenly share her home with another adult?

Well first off, I certainly would not be selling my own property to move in with anyone but that's beside the point.
I don't think its weird for his daughter to have tbe bigger room. It's obviously what their set up is and what works for them, so leave well alone.
I think it was cheeky of you to even suggest it tbh OP! 😬

You don't want them to think you're entitled - do you?

It’s not weird OP, I had the biggest bedroom too with ensuite. If you want this relationship to work and live with him and his daughter, stop bringing it up and certainly don’t ask her to move. She will resent you forever and personally I would choose my child over a new partner any time.
There is enough space for all of you in a 4 bedroom house. And sounds like you have massively upgraded anyway.

OP, if that’s your approach to building a relationship with his daughter then I think this relationship is doomed. She will absolutely hate you if you turn up in HER house and turf her out of HER bedroom.

I agree with him. I made a similar choice with my children for the same reasons.

Seriously, I agree with those who say this will likely have raised a few alarm bells with him. I'd back off and leave it if you don't want to be kicked out before you've moved in.

If he's currently using the office, surely it'd make sense for him to use it for storage for more clothes?

Yep that's why our eldest has the biggest bedroom.
It's not weird, it's good sense.

This has got to be a bloody wind up??? Nobody can possibly think the best course of action is to move in a house and turf the daughter out of her room because it’s bigger???

My daughter has the bigger room as she spends more time in there, has friends (2/3 at a time) sleep over. I literally go to bed and get ready in my room, I have the whole house to ‘live’ in.

Unless you want the relationship to come to an abrupt end, I’d park this idea as a bad one!

Wow, this is not going to go well. Leave everything relating to his daughter alone. His house, his daughter you are very new to their life okly 4 years and will be very new to their house when you move in.

You appear to be very unaware of others feelings, try to change that.

Yabvu op. It would be the beginning of the end.

I think if I was him I would be rethinking your moving in. What a horrible thing to even suggest. I bet you've planted a seed of doubt in his head now about how things will be going forward, if this is real ....