Landing doors different heights, will anyone notice?

[Feetupteashot]

4 doors come off our small landing, all need changing to fire doors.
The two smaller rooms have doors 30mm or so shorter than the others
I want 1 over 3 1930s style doors but builder advised something that has same pattern from top to bottom so can trim from the bottom and not so obvious.

Would I get away with the 1 over 3s? I could always have door handles at same height maybe?

Hi, we’ve just done this and I had no idea that the doors were such different sizes until our builder pointed it out. Ultimately you never really see these things.
There is a maximum you can cut off any end/side of a fire door without impacting on the fire safety integrity. Our builder bought different size doors and either trimmed them or (very seamlessly) added width to them accordingly. On both sides!!
One door only needed about 1.5cm width added and it was too fiddly to do both sides so they added to one side. I don’t notice that it isn’t symmetrical.
Door handles will go in the middle of the space between the one panel and the three panels so will be at very slightly different heights but you won’t see. The position relative to the door panels is more important.
Do you have small kids? Your door handles will be set quite high. Our petite 5 year old couldn’t open her door with the old ones we had.

I thought you said 30cm at first, which you definitely would notice, but 30mm not at all. I replaced 5 4 panel doors in my house recently, they were all different sizes. The builder trimmed from the bottom and the side. I’ve never noticed.