Why do you need more space? The baby doesn’t need space. I don’t have babies but would think you should sleep in the same room with the baby for a while, no? About a year at least? Or when you say family, do you mean grandparents to help with baby?
I live in a condo and my neighbors had 2 kids before buying a house (the older boy was 5 when they stopped renting and bought). The grandparents were there too. Why does baby = big house? I don’t see it. What I do see is baby = big money so you gotta save every bit my desi friend. If you wait, the money you save will put baby to college.