問題是。。。你得跟另外一個不相幹的人聯名，還隻限三房式

Joint Singles Scheme

The Joint Singles Scheme allows two to four single citizens to jointly buy an HDB flat from the open market. If you wish to buy a resale flat under the Joint Singles Scheme, you and the co-applicant(s) must meet the following eligibility conditions:

Citizenship
You must be Singapore Citizens.

Age
You must be at least 35 years of age (based on date of birth) at the point of submission of your resale flat application. This age criterion applies to both unmarried singles and divorcees.

As for widowed persons and orphans, the age criterion is at least 21. The orphan buying the resale flat must not have another sibling below the age of 35 buying a flat separately under the Orphans Scheme, SSC or Joint Singles Scheme.

Special Condition
You must buy the flat jointly as co-applicants.