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To avoid accidents from happening, do ensure that the installation or replacement of your flat’s windows is done safely and comply with HDB’s safety requirements.
You must engage a Building and Construction Authority (BCA) approved window contractor listed in HDB's directory for all window installation/ replacement work. These are the requirements that you need to comply with for window installations.
Download the illustration (PDF, 51KB) for reference.
Download the illustration (PDF, 92KB) for reference.
Download the illustration (PDF, 25KB) for reference.
As a flat owner or occupant, you are responsible for the upkeep of the windows in your flat. Otherwise, a window could fall and cause serious injury or worse to those below.
Guidelines on other windows and grilles works.
Width of window panel:
For flats handed over from 1 July 2007 onwards:
Applicable to developments handed over before 1 July 2007:
The replacement of full height windows is strictly not allowed. Permission may be granted in an instance where a damaged frame requires a complete replacement.
See examples of full height windows (including 3/4 height and bay windows) (PDF, 324KB).
A renovation permit from HDB is required for all windows replacement work. A BCA Approved Window Contractor (AWC) who is listed in HDB’s Directory of Renovation Contractors needs to apply a renovation permit from HDB before carrying out the window replacement works.
For windows replacement work involving safety barriers, the following shall be complied with:
1. A Qualified Person (QP) who is a Professional Engineer (PE) in civil or structural engineering must be engaged to :
(a) design and/ or certify the lateral loading of the replacement works
(b) submit structural calculations and drawings to BCA for regulatory plans approval through the Construction and Real Estate Network (CORENET)
2. Upon approval of the plans, the flat owner(s), the QP supervising the works, and the Licensed Builder (LB) carrying out the replacement of the safety barrier works must jointly apply for a permit from BCA to commence structural works
3. Your appointed AWC has to submit BCA’s ‘Permit to commence structural work’ along with the approved drawings to HDB to obtain a renovation permit before commencement of the replacement works.
The replacement will have to comply with HDB’s original windows:
If you wish to change ownership of your flat without a sale (i.e. without monetary consideration), find out more about the types of ownership changes and the eligibility conditions.