@Democracymanifest - first homes are being bigger because that’s what people need by the time they are buying - a 1 bed flat in our town costs around £240k, but most young people need to save for several years for a deposit, and need to be established in careers to be earning enough to get a mortgage for that much. Most couples by the time they are in a position to buy have hit the late 20s/early 30s - so baby life stage. Given affordability checks for mortgages will take out nursery fees, you can’t as a couple assume you can buy a flat for now, then be able to borrow enough to upgrade in 4/5 years time.
stamp duty is so much now it’s not logical to buy a flat you know you’ll outgrow in a couple of years, compared to stretching yourself for the house now. And for anyone in their 20s, their life experience has shown that house prices just go up, drops are only for a couple of months max, so the difference between flats and houses grows faster than savings.
buying the 20 year house at 30 rather than the 5 year flat then the 15 year house at 24&29 makes logical sense- and few are in the position to buy flats in early 20s.
The housing ladder doesn’t exist for younger people. I’m in my 40s and I know very few who have done the traditional route of - buying a flat young, paying down the mortgage, using the equity to buy a small house, paying that mortgage down, buying a big house just before kids are teens.