Young adults living at home

[SilverDoublet]

We live in an expensive city, which has lots of universities but very high rent even in house shares, which are very hard to find.

Am I being ridiculous thinking our kids will all be living with us til they're 24 or 25 and planning accordingly? DH thinks they'll move out like he did at 18. He's from a rural village with no universities anywhere near it so he had no option and he got grants and subsidies because he was from a single parent family on a very low income. Our income is just enough that it puts us above claiming any supports for the kids to go to university/rent.

I think we should move house for more space if we're going to have 4 young adults living with us in the next 10 years.
Am I being unreasonable?

Perhaps they will move to an area that's affordable, it's not compulsory to live in the SE.
My DC both live and work in Yorkshire. Spent a year at home after uni saving up first.

I assumed my very academic, shy son would end up at uni doing something like an engineering degree. He left home at 16 to join the RAF. You never know.

Gosh yes, move if you can afford to.