If you intend to buy an HDB flat under the Single Singapore Citizen Scheme, you can only do so when you are at least 35-years-old.
Hope this answers your question.
See if the system accepts your application.
Let me know if this works..
The answer is Cannot.. Cos HDB got system controls in place. You will not be able to complete your application before you turn 35.
You can contact me at 8866 7000 for a non-obligatory discussion.
I would be glad to assist you.
Feel free to contact me @ 97100155.
Hope to hear from you soon