因为最近为如题的问题颇为苦恼，网上众说纷纭，正确答案不得而知，华新论坛上似乎也有中介说过否定的答案。
今天在此搜索了一番，发现了一个坡人的相同主题的讨论贴，颇受启发，要想知道正确答案，还是自己去问hdb比较准。
摘录关键说法如下
After booking a BTO flat, you can buy a resale flat (without CPF Housing Grant) as interim accommodation, besides the option of renting a room/flat from open market.
详细链接如下，希望对大家有所帮助
http://forums.hardwarezone.com.sg/showthread.php?s=d32e3684bf10ca133925964a73772c60&t=2460159