Subdivision of a flat into the commonly-known "subdivided units" generally refers to the subdivision of a flat as shown on the original approved plan of a building into two or more individual rooms.
Associated Building Works
![Removal of the original non-structural partition walls](../../../../images/safety-and-inspection/ubw/07subflat_intro01.jpg)
Removal of the original non-structural partition walls
![Erection of new non-structural partition walls, installation of new toilets and kitchens](../../../../images/safety-and-inspection/ubw/07subflat_intro02.jpg)
Erection of new non-structural partition walls, installation of new toilets and kitchens
![Alteration or addition of internal drains](../../../../images/safety-and-inspection/ubw/07subflat_intro03.jpg)
Alteration or addition of internal drains
![Thickening of floor screeding to accommodate the new or diverted drain pipes](../../../../images/safety-and-inspection/ubw/07subflat_intro04.jpg)
Thickening of floor screeding to accommodate the new or diverted drain pipes
![Addition of door openings or ventilation openings](../../../../images/safety-and-inspection/ubw/07subflat_intro05.jpg)
Addition of door openings or ventilation openings
Potential Impacts of Associated Building Works
The building safety and environmental hygiene may be adversely affected if these associated building works are not properly carried out.
- Addition of unauthorised door openings which obstruct means of escape
- Addition of openings for ventilation affecting the integrity of fire resisting construction
- Improper drainage works causing water seepage
- Overloading of the building due to addition of partition walls and thickened floor screeding