lso, who comes up with the required size of a house to raise a family? The house I grew up in was 1200 sq. ft. and I had no idea it was corendsied tortously small until I was in my late 20â€™s and everyone talked about how you canâ€™t raise kids with less than 3000 sq. ft.you know I think I am going to throw up…I am soo tired of people saying that we all want 300sqft houses. I am looking at 1920 cape-cods which are 800sqft, and priced well x4 average income for the area – central Jersey.. Please stop stupid nonsense about 3000+++ sqft houses.