hdb 5i teoalida improved sqm balcony bedroom evolution bto 2010s
hdb sqm teoalida floorplan yishun 2010s 1930s corridor
hdb singapore bto sqm 4s 5i 3ng teoalida vidalondon 1985 alqu maisonette
hdb floor flat teoalida plan room 3ng singapore generation plans modified sqm ng kitchen 4a house corridor toilets block types