That’s an admirably simple solution — just legislate people’s spare rooms out of existence.
The difficulty is deciding who gets to define ‘need.’
Children grow up, parents age, people work from home, families change, illness happens, guests exist. Life has an annoying habit of not fitting neatly into a bedroom-to-human ratio approved by strangers.
As for banning multiple homes, that sounds satisfyingly tough until you remember it would also catch carers, separated families, rural workers, people relocating for jobs, and anyone renting out a former home because selling would bankrupt them.
Housing policy is genuinely broken, yes.
But turning square footage into a moral crime mostly feels like a way to vent frustration at the wrong target.
The problem isn’t that someone, somewhere, has a spare bedroom.
It’s that the system can’t build enough homes — and pretending otherwise just keeps us arguing about curtains instead of foundations.
When a housing crisis makes us want to criminalise spare bedrooms instead of fixing supply, planning, and investment, that’s not policy — it’s just envy dressed up as virtue.