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8. HDB Unit Types - Standard Units

Standard apartments are the most common where it comes to HDB flats. Older apartments built between the 70’s and early 90’s have rectangular or square layout and are considered desirable. Newer standard apartments however to accommodate for more corner units take on a more creative layout, resulting in irregularly shaped rooms.

While labeled 2, 3, 4 and 5 room apartments, HDB considers the living area as a room and therefore do not represent the amount of bedrooms in the unit. A common mistake by agents is misrepresenting the type of HDB unit by using the term ‘bedroom’ instead or ‘room’. The terms ‘4 bedroom’ and ‘4 room’ are completely different and the former is used when dealing in private property locally.

Strangely, both typical 4 and 5 room apartments layouts only have 3 bedrooms within. Modern 5 room apartments have allowance for owners to partition an extra room.

Typical Models:

Studio – 1 Bedroom, 1 Kitchen, 1 Living Room (Image:HDB)

3-room - 2 Bedrooms, 1 Kitchen, 1 Living Room (Image:HDB)

4-room - 3 Bedrooms, 1 Kitchen, 1 Living Room (Image:HDB)

5-room - 3 Bedrooms, 1 Kitchen, 1 Living Room, 1 Dining Area (Image:HDB)

Typical Unit Sizes:

2i, 2s

3a, 3ng, 3i, 3s, 3std

4a, 4ng, 4s, 4i, 4std

5a, 5i, 5s

Possible Orientation: 




Lift Level

Possible Elevation:

Ground Floor

Low Floor

Mid Floor

High Floor


• Typically affordable

Up next, learn about another unit type - the Executive Apartment >>

Or view full list of topics in the HDB Buying Guide >>

Posted on 08-08-2008 00:00 | By Francis

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