C.K. I spent 2 years in SIN and 3000 US$ p.m. net wont cut it. Even if you somehow wangled a cheap H.D.B. flat in Tampenis (and 99.99% chance are you wont), youll still go broke on utiliteys. Elect is the most expensive, and if the fam expects aircon 24/7 youll end up takin out loans.
Theres no P.F. for expats anymore and as D&G said there are housing schemes but only for locals. Certain tax breaks are only for locals too.
Id have a serius bloodey talk to A.H.K. before puttin pen to paper.