但是在提交resale application的时候，需要在系统里面提交新的住址。
以下是HDB规定原文。
Conditions for flat sellers
To be eligible for the temporary extension, you must:
Have committed to buy a completed housing unit (can be another HDB flat or private residential property) in Singapore at the time of the resale application, i.e. exercised an Option To Purchase or signed a Sale and Purchase Agreement
Not be renting out the whole flat at the time of resale application
Be the contra party if the transactions are under the Enhanced Contra Facility
