Do you know about tiny house movement?
I know that that is a movement that encourages people to live in small functional houses 
It's encouraged due to the growing world population especially in the united states
Yes i totally understand the cause, i think its interesting, but they are really extremely small, tell me more, i am interested now
Smaller households are encouraged .To save money in growing housing cost.
Yes they are, i have heard of that shipping-container houses, thats more acceptable for me i thing, they are a little bigger. have you heard of them?
The houses are affordable due to meagre size income of households by affordability index