1st pic is 1985. thatdesign old and boring kind. In-out open
windows
the 2nd pic 1990 , big improvements to HDB more better features
added like colour and some HDB like tampinese had LCD lift, lifts
on every floor, common garbage chute . Sliding windows
After that 1996 onwards, not much difference
2000 onwards, new Hdb like Senkanang & Punggol had a lavish
renovation,
anther big improvement.
