HDB, condo or landed: check the opening first

For HDB flats, use the official window rules

HDB states that window installation or replacement work must be carried out by a BCA-approved window contractor listed in HDB’s directory. Verify the actual installing entity against the official requirements; a marketing phrase is not a directory check.

HDB also states that replacement of full-height windows, including three-quarter-height and bay windows, is strictly not allowed, while permission may be granted where a damaged frame requires complete replacement. Do not treat these openings as ordinary replacement projects.

Read HDB’s current window works guidelines and follow its linked requirements and contractor directory for your actual work. This page summarises that source; it does not grant permission for an individual opening.

For condos, get the development’s requirements

• Send management a clear description of the proposed scope and the affected opening.
• Ask what documents, drawings, finishes or appearance restrictions apply.
• Confirm access arrangements, working hours, deposits and any required submissions in writing.
• Share management’s response with the quoting team before confirming fabrication.

Requirements vary by development and scope. Do not assume that retaining an outside frame, adding an internal window or using a particular material automatically removes the need for enquiries.

For landed homes, define the scope carefully

Show the opening, access conditions and any proposed change to size, arrangement or surrounding building work. Ask the project team which requirements apply to that scope and who is responsible for checking them.

A simple description such as “window replacement” may not capture structural, access or other work. Obtain the necessary case-specific advice before authorising changes.

Keep responsibility clear

• Name the contracting entity and the entity that will perform the installation.
• Record who checks the relevant property requirements and handles any required submissions.
• Confirm which opening, dimensions, finishes and scope have been agreed.
• Keep approvals and changes with the accepted quotation.

This guide does not certify Victorious Windows or another entity’s credentials. Ask for the relevant current records for your proposed project.

What to send first

Include your property type, photographs of the opening and any existing management correspondence. Flag full-height, three-quarter-height and bay windows at the start. Avoid assuming that a system shown in another home is suitable for yours.

Then use the quotation checklist to align the design, responsibilities and exclusions.

Common questions

Sources & context

References support the general explanations or official requirements identified above. Manufacturer sources describe their own systems; they do not certify Victorious Windows products, imply a supply relationship or predict your home’s result.

• HDB — official window works guidelines

Source pages checked 31 October 2026. Recheck current property requirements and the exact product specification for your project.