Could/ Should I ask you some questions

1. Excuse me. Could/ Should I ask you some questions?
2. Yes/ No, sure.
3. Are/ Do you live in a house or an apartment?
4. I live/ lives in a house.
5. Does it have/ has a pool?
6. No, it doesn't/ don't.
7. It has/ have three bedrooms.
8. Does it has/ have a balcony?
9. Yes, it does/ do.