you wanna find old building can try coming down to the west,
come visit jurong ext lor. from block 700-900, some are only as
young as 7-8years old, some are as old as old as 18-19years.
or try
285, 185, 187, 205, 209 and etc at boon lay drive. those building
are as old as 30years. faster come down, before they are officially
gone.
or try
taman jurong, 103, 321, 111, 103(the oldest). those building are as
old as 35years old.
this is what i heard from my mother. she lived in jurong ever since
she was 18years old.