Variations by model and age
- 3-Room Standard (1960-1973): Sizes range from 53-71 sqm. Lacks a master bedroom toilet and storeroom.
- 3-Room Improved (1966-1986): Sizes range from 60-76 sqm. Lacks a master bedroom toilet and storeroom.
- 3-Room New Generation (1976-1989): Sizes range from 67-88 sqm. Features two toilets and a storeroom.
- 3-Room Simplified (1984-1989): Around 65 sqm with two toilets.
- 3-Room Premium Apartment (2016): About 65 sqm with two toilets, a household shelter, and centralized refuse chute.
- 3-Room Model A:
- 2002-2008: 60-62 sqm.
- 2008-present: 65-70 sqm with two full toilets, a household shelter, and a centralized refuse chute.
