Another rooms one

[FancyPants20]

We live in a tiny rural house and are building an extension to it. We've planned for the extension upstairs to be two bedrooms - our bedroom and DD's bedroom. Dd is currently 4, but realistically will be about 6 when the extension is ready to move into.
DP and I disagree as to where to separate the two rooms. He wants DD to have a large room, and for us to have a much smaller room. His argument is that DD will need the space to play in.
I think DD will be ok in a smaller room until she's about ten or so, wherein I will swap my office for her room, so that she gets a nice big room.
I work from home full-time and the room I'm currently using as an office is about 25sqm, but is in the eaves, and is accessed by a separate staircase. I think that would be a great room fir a tween/teenager, but obviously not until they're of an age to be responsible enough.
DP doesn't seem to be taking into account that DD will grow up, and in 10 years time would most likely not want ti be as stuck to us as she is now as a four-year-old.
At the moment, DD always wants to be near us, and refuses to play in her own room, taking her toys/stuff into the living room instead. But that's going to change, right?

YABU: Give the child the bigger room.
YANBU: Make sure your own room is a decent size.

Two equal sized rooms would seem the most sensible to me.

LTB

Thank you, @HeddaGarbled that seems the most sensible plan to me too.

@DrManhattan Leave the Bedroom? Not sure that'll work until we actually construct the two bedrooms.

my kids have tiny rooms. Most of the playing happens downstairs in the living room. Even when they had bigger rooms (previous house), they always wanted to be near us rather than play alone in a room.

If you make the rooms equal size, will they both be a decent size? If you make one smaller than the other, as suggested, what sort of size would they each be then?

I've only ever known children that only spent time in their rooms once they hit tween years. So I'd make sure I had a decent size bedroom.

Think about resale!

Who in their right mind would buy a house where the main bedroom is small and the kids bedroom is bigger? Aim for as equal as possible to enable people to configure the house as flexibly as possible.

I doubt your dc will play too much in her room.

Your DP is a bit of a wally!

Where do you keep the toys? If in DD’s room, she needs more space now than she will at 10 as toys take up a lot of space age 4-9 but drastically less from 10/11.

Who has whar room doesnt have to be set in stone forever. You can move rooms at anytime!

That said, i agree two decent sized rooms in your extension would be best, for future flexibility as others have said.

She doesn’t need a large room from 6 to 10. Have a decent sized bedroom for yourselves and give her the attic when she’s old enough. You do not have to martyr yourselves over this.

My DD is 4 and likes to play in her room sometimes but she has a younger brother so sure this is largely why.
I'd give her a smaller room for now but not tiny

I'd make them equal size. In our house the kids have the bigger bedrooms as they like to play in them and they have more stuff. I'm hardly in my bedroom except to sleep and get ready so I'm not fussed about a bigger bedroom.
Plus you can change rooms again at any point in the future.

Think about resale! Who in their right mind would buy a house where the main bedroom is small and the kids bedroom is bigger? Aim for as equal as possible to enable people to configure the house as flexibly as possible.

Take the children’s furniture out of the bigger room, paint over the Disney wallpaper and voila - it’s the main room. You didn’t have to demolish the house after all.

Your DP is a bit of a wally!

At leas he’s got company now.

@StillCoughingandLaughing That doesn’t work if the main room has an en suite.

But the OP hasn’t mentioned an en-suite.

No, but neither has she said there isn't one. New master bedrooms these days very often do have one, and that would be a big problem with the "redecorate to resell" plan.

But as neither room exists yet, it would be pretty easy to decide not to build an en-suite on a smaller room.

It would, but if I were the OP and had planned a master room with en suite, and now I was being expected to take a smaller room and also not have the en suite, I would be even less happy with the idea. Nor would I want my 4yo to have the room with the en suite.