Under your roof
Definition 1 of 1
Pro Tip 1/3Authority Implication
Indicates someone's authority over that home, often used by parents or homeowners. 
You must respect the curfew under my roof.
Pro Tip 2/3Cultural Respect
Reflects tradition where guests respect a host's home rules as a cultural norm. 
No shoes allowed under your roof, understood.
Pro Tip 3/3Emotional Weight
Conveys emotional significance, implying protection or a sense of belonging. 
You're always welcome under our roof, no matter what.