(v) You are buying a flat with your parents/married child included as the joint applicants or permitted occupiers.


http://www.hdb.gov.sg/fi10/fi10201p.nsf/WPDis/Buying%20A%20Resale%20FlatCPF%20Housing%20Grant%20for%20Family?OpenDocument


# To qualify, you have to meet one of these proximity conditions:
(i) You are buying a flat in the same town as your parents'/married child's flat.
(ii) You are buying a flat within 2 km of your parents'/married child's flat, if they are in different towns.
(iii) You are buying a flat in the same town of a private residential property that is owned and occupied by your parents/married child.
(iv) You are buying a flat within 2 km of a private residential property that is owned and occupied by your parents/married child.
(v) You are buying a flat with your parents/married child included as the joint applicants or permitted occupiers.

当然在父母是公民的情况下