Records in Singapore public housing

Tallest slab block: block 105 on Henderson cresent, 24 floors. Longest HDB: block 34 on Whampoa West, 320 meters long on corridor side, 46 units per floor.

Longest relatively-straight HDB: block 79 in Toa Payoh, 300 meters long, 44 units per floor, demolished in 2003.

Smallest HDB in terms of units: blocks 539, 542, 545 in Pasir Ris Street 51, 4 units Executive Maisonette; block 308 in Choa Chu Kang, 2 units 4-Room and 2 units 5-Room.Note that some 2-storey shophouse HDBs may have even fewer units.

 Biggest HDB in terms of units: block 37 on Circuit Road, 570 units, 16-storey block with 3 wings, 38 units per floor, 1960s block with 2-Room / 3-Room Standard (for comparison, the 40-storey blocks 88, 89, 90 at Tanglin Halt have only 331-379 units.

Biggest Singapore public housing units : Biggest regular Executive flats are around 150-160 sqm, special flats on non-90° corners may be bigger. The biggest public housing units in Singapore are the terrace houses found in some 1950s SIT precints in Queenstown,Jalan Bahagia and Kallang.These units may reach up to 260sqm,but only if the owner(s)have constructed extensions to the original unit,which is approximately 78sqm in size.

Biggest HDB flats ever built are the Penthouse-Maisonette flats, which have sizes ranging from 160 to 190 sqm, plus a roof terrace. They are located in the two topmost floor of some late 1980s to 1990s precincts in Bishan (52 units), Choa Chu Kang (12 units, blocks 638 to 643,completed in 1998), Queenstown-Strathmore (4 units,blocks 80 to 83 completed in 1997), as well as Hougang and Pasir Ris(needing confirmation,so no idea how many units built in these 2 new towns.) (source). I The Jumbo Apartments, found especially in Woodlands and Yishun, can reach up to 190 sqm too,or even larger.