My friend was 17 and so was his girlfriend when their baby was born.. they moved out shortly after the baby was born into their own apartment. Had CAS involved, they had to come do an inspection of the entire house make sure it was fit for a child, etc. Checked to make sure cupboards with chemicals were locked up, etc.. public health nurses also did a visit. They did sort of interviews with them making sure they had jobs/money
My friend was 17 when she had her son and he is now 9 months, they still live with her mom, but the public health nurses still visit, CAS also got involved with her, made sure her home was clean and fit for a baby, etc.. that she was okay to be a mom.
And my friend's sister was 18 when she had her baby, living with her parents, and they still came and checked out the house and did some sort of like evaluation on her to make sure she was a fit parent, that the house was alright, etc.
(CAS being Children's Aid Society, by the way..)