I mean, I'm not going to ask you to doxx yourself, but I'm extremely curious to know where you're seeing these homes that are, as you describe them, like 150 SqFt of livable area (10x10 studio + 5x8 bathroom) with an attached 3 car garage.
Edit: And to clarify, the 1500 was pulled out of an anecdotal average. My observations while shopping for homes here in the US have been; 2 bed / 1 bath, could be as small as 800 SqFt, but it's cramped. Whereas in middle-class suburbia, it's not uncommon to see 2500+ SqFt homes.