HDB/BCA Approved Window Contractors in Singapore: A Homeowners Guide
Choosing the right HDB window contractor in Singapore isn’t just about comparing quotations. Window installation and replacement in HDB homes must be carried out by a BCA-approved window contractor registered with HDB. This is necessary because poorly maintained or installed windows pose serious safety hazards.
If you are searching for an HDB-approved window contractor, this guide highlights five contractors to consider, starting with 9 Power Aluminium & Glass. This article also explains BCA and HDB approvals, what to consider when getting quotations, and the questions you should ask your chosen contractor.
Important: HDB does not endorse or guarantee the quality of work of contractors listed in its directories. Homeowners enter into private contracts with contractors and should evaluate quotations, specifications, warranties and workmanship independently.
What Is an HDB-Approved Window Contractor?
An “HDB-approved window contractor” isn’t an official title, as HDB does not approve window contractors itself. In practice, it means a company holds the following two credentials that HDB requires for window work in a flat:
- BCA registration under RW01: The Building and Construction Authority registers window contractors in its Contractors Registry under the regulatory workhead RW01. Under the BCA registration, companies are authorised to install, replace and retrofit windows. Licensed builders registered under GB1 or GB2 may also carry out window installation. In both cases, Trained Window Installers must do the work.
- Listing in HDB’s Directory of Renovation Contractors. This allows the firm to work inside HDB flats and apply for the renovation permit required for every window replacement.
A contractor with only one of the two can’t legally complete the job, so you should check both before you sign anything.
HDB/BCA Approved Window Contractors at a Glance
When considering window contractors in Singapore, check their approvals, installation experience, and ability to meet HDB requirements before deciding. Here’s what to look for at a glance.
| Contractor | BCA/HDB relevance | Services/Strengths | Pricing approach |
| 9 Power Aluminium & Glass Pte Ltd | BCA RW01 Window Contractor; HDB renovation contractor | Aluminium windows, grilles, gates and awnings | Quote based on project requirements |
| A&V Aluminium Contractor | BCA RW01 and CR17 | Windows, grilles, doors and other aluminium solutions | Personalised quotation |
| WSS Windows and Doors Pte Ltd | BCA RW01 and CR17 | Aluminium windows, doors, grilles and related products | Product-specific prices and quotations |
| Hands@Windows Servicing | BCA RW01; HDB directory reference | Window installation, repair and servicing | Job-specific quotation |
| Asia Safety Window Systems | BCA-registered contractor; HDB/BCA window services | Windows, grilles, doors, repairs and permit-related services | Quote based on requirements |
Contractor registrations and business details can change. Always check the current BCA/HDB directory before engaging a contractor.
1. 9 Power Aluminium & Glass Pte Ltd
9 Power Aluminium & Glass Pte Ltd is the preferred choice in this list of HDB BCA-approved window contractors for homeowners. From the latest BCA directory, 9 Power is currently listed under RW01 – Window Contractors, Single Grade. The company’s current registration will expire on 1 January 2027.
9 Power is a Singapore aluminium expert that designs customised windows, grilles, gates and awnings for HDB flats, BTO flats, condominiums and landed homes. It offers a wide range of windows, including casement, sliding, and top-hung aluminium windows, with each window individually measured and fabricated for the specific opening.
The company uses high-grade aluminium alloy and offers various options for glass specifications and finishes. Customers can receive a same-day site assessment, while fabrication normally takes one to two weeks, depending on the chosen finishes and glass. Installing a window in a standard flat typically takes only one day.
9 Power products come with a 10-year structural guarantee.
What makes 9 Power worth considering?
For homeowners, the main advantage is the combination of compliance, custom fabrication, and the many services associated with aluminium products provided by one contractor. Rather than limiting its product range to one type of window, 9 Power offers casement, sliding, and top-hung windows, along with grilles, gates, and awnings.
2. A&V Aluminium Contractor
Another reputable contractor to consider when looking for HDB window contractors in Singapore is A&V Aluminium Contractor. According to BCA’s current company profile, A&V falls under CR17 – Windows and RW01 – Window Contractors categories, both marked as Single Grade, and their expiry date is 1 December 2026.
A&V has window installers who completed training in the module on replacement and reinstatement of safety barriers integrated into windows. They specialise in aluminium windows and grilles, doors, shower screens, soundproofing, and pet proofing.
A&V does not have a set price for each window replacement project that it undertakes. A&V’s professional listing indicates a wide range of S$100 to S$100,000 for a typical job, and their quotations are personalised because projects are customised. That range should not be interpreted as the normal cost of replacing one HDB window.
This is a key factor when comparing contractors, since the quotation is influenced by size, design, materials used, the amount of glass used, and the number of windows being replaced.
3. WSS Windows and Doors Pte Ltd
According to the Building and Construction Authority (BCA) company registration, WSS is registered under both RW01 – Window Contractors and CR17 – Windows, Single Grade. Both registrations are currently active until 1 March 2029. The BCA also maintains a record of window installation workers trained in replacing and reinstating safety barriers integrated with windows.
WSS specialises in aluminium and stainless steel windows, doors, invisible grilles, and shower screens. According to the company website, the company’s products are factory-made and installed directly from the factory.
Unlike other companies that provide quotations only after a site assessment, WSS also lists prices for selected products on its online store. This includes:
- Set A: S$600 for 2,000 mm × 1,200 mm
- Set B: S$890 for 3,000 mm × 1,200 mm
- Set C: S$1,175 for 4,000 mm × 1,200 mm
These figures are published product prices for the specified configurations, not a universal HDB window replacement rate. Homeowners should ensure the final quotation includes all elements.
4. Hands@Windows Servicing
Hands@Windows Servicing is yet another name to consider if you are looking for a window contractor or window repair service in HDB.
The company provides services such as installing doors, gates, grilles, and windows. It also offers window repair services. It is registered as a BCA RW01 Single Grade window contractor, with registration validity until 1 October 2028.
Its services are especially important for homeowners who are not sure if they need a total replacement of their windows. Window repairs may deal with different components such as handles, locks, hinges, rollers, etc. So, in these cases, professional advice may help you understand what needs to be done: repaired or replaced.
5. Asia Safety Window Systems
Another business offering window services in Singapore is Asia Safety Window Systems. It is an HDB/BCA-certified contractor offering aluminium windows, grilles, and doors for HDB BTO and resale flats, condominiums, and landed houses. The windows offered include casement, sliding, folding, louvre, and top-hung windows.
The company offers repair and maintenance services as well. Its website mentions window maintenance, replacement of worn parts, and services related to window safety. The company also mentions BCA forms, such as Form B1 for HDB and Form D for completing window replacement or reinstatement jobs done by BCA-registered contractors.
The company is a BCA-registered contractor, and its UEN is 53149949M. However, because contractor registrations can change, homeowners should still verify the company’s current status through the official BCA/HDB directories before signing a contract.
How to Check If a Window Contractor Is BCA Approved
When looking for a window contractor in Singapore, don’t rely solely on advertising and online ratings; verify the contractor’s credentials first.
1. Search the BCA Directory
HDB keeps an up-to-date directory of registered contractors. Currently, the RW01 Contractors Directory lists many Single Grade contractors. This directory lists the company name, UEN, and contact information, among other details.
For example, the current BCA record for 9 Power shows:
- Company: 9 Power Aluminium & Glass Pte Ltd
- UEN: 201835588K
- Workhead: RW01 – Window Contractors
- Grade: Single Grade
- Expiry: 1 January 2027
Confirm the exact legal company name, as similar business names may exist.
2. Check That the Firm is Listed with HDB
Check to see if the firm is listed in the HDB list of approved contractors.
2. Check the scope of work
Ask the contractor to explain exactly what the quotation includes.
A complete quotation may need to identify:
- Window type
- Window dimensions
- Aluminium specification
- Glass type and thickness
- Number of panels
- Hardware and fittings
- Removal of existing windows
- Disposal
- Installation
- Any additional work
- Warranty
- Expected completion date
3. Compare like-for-like quotations
A cheaper quotation does not necessarily mean that it is the best quotation. Two contractors can offer different rates based on the type of used glass, profiles, hardware, finishes or other installation scopes.
Compare the technical specifications before comparing the final price.
How Much Does an HDB Window Replacement Cost?
There is no single fixed price for HDB window replacement in Singapore.
The cost can vary according to:
- Window dimensions
- Window style
- Number of windows
- Aluminium profile
- Glass specification
- Frame finish
- Hardware
- Site conditions
- Removal and disposal requirements
- Installation complexity
Some contractors quote prices for certain products. For instance, WSS quotes a selection of sliding window sets at S$600, S$890 and S$1,175 for specified dimensions.
On the other hand, other contractors use customised quotations. For instance, A&V states that its quotations are customised in accordance with project requirements and on-site visits.
The safest approach is to request a detailed quotation and compare specifications rather than rely on a generic online price.
What Should You Ask an HDB Window Contractor?
Before confirming your contractor, ask these questions.
Is your company BCA-approved under RW01?
Ask for the exact company name and verify it through the current BCA directory.
Are you listed with HDB?
This is particularly important for HDB window installation and replacement because HDB requires the contractor to be both BCA-approved and listed with HDB.
What type of window and glass do you recommending?
The right specification depends on the opening, room, ventilation requirements and intended use.
What is included in the quotation?
Clarify whether the quotation includes measurement, fabrication, installation, removal, and disposal.
How long will the work take?
Ask for both the fabrication period and installation timeframe, particularly if you are coordinating other renovation work.
What does the warranty cover?
Don’t rely only on the phrase “10-year warranty.” Ask which components are covered, for how long and under what conditions.
Who handles the required HDB paperwork?
HDB’s guidance states that the contractor must submit the relevant window permit application for the work.
HDB Window Safety: What Homeowners Should Know
Window safety must not be ignored even after the installation of the window. HDB suggests checking the window every six months to ensure smooth operation and that no parts are loose. If the window is likely to fall, the owner should take safety precautions and engage the services of a BCA-approved window contractor.
According to HDB, homeowners must maintain their windows in good condition. Failure to maintain the windows may create a safety hazard for people below. This means that a good window contractor should not only provide an attractive design but should also know the safety standards and installation requirements.
HDB Window Contractor (FAQs)
What is an HDB-approved window contractor?
A licensed window contractor by HDB means a contractor who fulfils all the required BCA and HDB criteria for window works on HDB flats. The requirement for installation and replacement of new aluminium windows set by HDB is to use a BCA-licensed window contractor.
Do I need a BCA-approved contractor to replace HDB windows?
Yes. HDB states that the installation/replacement of windows in HDB flats must be carried out by a window contractor approved by the BCA, with details listed in the HDB Directory.
How can I check whether a window contractor is BCA-approved?
Check whether the contractor’s company name appears in the current contractor directory published by the BCA and is registered as an RW01 Window Contractor.
How much does a window contractor charge in Singapore?
The fee varies. It depends on the window type, size, glass type, aluminium profile, hardware, and quantity required. Some contractors quote fees for specific combinations of specifications, while others offer personalised quotes. Always compare specifications, not just the price tag.
Can an HDB window be repaired instead of replaced?
It depends on the window’s condition. Some faults may involve replaceable parts, while others may require replacing the entire window.
How often should HDB windows be checked?
HDB recommends checking your windows at least twice a year to ensure they function properly and that no lock parts are seized or broken.
Can I use any window contractor for an HDB flat?
No. HDB states that only BCA-approved window contractors from its directories can install or replace windows in your HDB flat.
Does HDB guarantee the work of an approved contractor?
No. HDB clearly advises that it neither endorses nor guarantees the work done by the contractors appearing in its directories. It is a private transaction between you and the contractor.
Final Thoughts
When selecting HDB window contractors in Singapore, consider compliance first, then compare workmanship, specifications, warranty, and price.
The first thing to do is to confirm that the contractor is registered under the BCA RW01 workhead of Window Contractors and also listed with HDB.
Your aim should not be to just choose the cheapest window contractor in Singapore; rather, you should choose an appropriate window contractor that gives you the right specification, pricing, installation process, and warranty.