10 Best Window Grille Contractors in Singapore (2026): Ranked by Reviews

Choosing the best window grille contractor in Singapore is a decision that affects both the safety and aesthetics of your home for years. Window grilles serve as a critical child safety barrier and as protection against unauthorised entry: but quality, regulatory compliance, and installation standards vary significantly between contractors. We evaluated 50 window grille and aluminium contractors across Singapore, assessing Google review scores and volume, BCA/HDB compliance, product range (standard, stainless steel, invisible, soundproof), installation quality, and response time. This list covers the best window grille contractors in Singapore for 2026, ranked by overall quality, safety compliance, and client satisfaction.

Key Takeaways

• Best overall: Legate Enterprise, 4.9 stars across 7,617 Google reviews, one of Singapore's most reviewed home improvement contractors with a T-Space showroom in Tampines
• Best for invisible grilles: Diamond Grille System, 5.0 stars across 144 reviews, the inventor of the Diamond Grille System with BCA approval and international safety certifications
• Most reviewed aluminium contractor: M Aluminium and Glass, 4.8 stars with 835 reviews, covering windows, grilles, doors, and glass works across Singapore
• HDB-approved grille contractors must be registered under HDB's Approved Contractors list for window installation and replacement
• Invisible grilles cost SGD 100 to SGD 200 per running metre installed, compared to SGD 50 to SGD 120 for standard steel grilles
• Under the HDB Window Safety Programme, all HDB residents with windows above the second floor are required to maintain windows in safe condition and must use approved contractors for installation

How We Ranked These Window Grille Contractors

We ranked each window grille contractor using: Google Maps rating (minimum 4.0 required), review count (minimum 10 verified reviews), HDB and BCA approval status, product range (standard, stainless steel, invisible, soundproof, aluminium), website transparency, and response time to a test enquiry. Firms that only supply materials without installation were excluded. Window film and mosquito net specialists were excluded as separate service categories. We gave priority to contractors with HDB-approved or BCA-certified products, as compliance is non-negotiable for Singapore residential installations. BestThingReview.com evaluated 50 contractors to produce this top 10 list.

Our Top Picks

1. Legate Enterprise, Best Overall

Legate Enterprise is one of Singapore's most comprehensively reviewed home improvement contractors, with 7,617 Google reviews at 4.9 stars: a review volume that is exceptional for any home improvement firm in Singapore. Operating from their T-Space showroom in Tampines, Legate covers windows, grilles, doors, gates, roller blinds, and a wide range of home improvement products under a single contractor engagement. Their window and grille product range includes standard aluminium, stainless steel, invisible, and security grilles, all available for viewing in their showroom before confirmation. As an HDB-registered contractor, Legate handles BCA-compliant window replacement and grille installation for HDB flats, condominiums, and landed properties. The scale of their verified review base provides a quality signal that very few contractors in Singapore can match across the full scope of window and grille work.

📍 Address: 1 Tampines North Dr. 1, #08-32, T-Space, Singapore 528559
📞 Phone: +65 6242 1911
🌐 Website: legate.com.sg

"Used Legate for full-home grille replacement in our 5-room HDB. The showroom visit was efficient, the consultant explained every option clearly, and the installation team was clean and professional. Everything done in one visit.", Jennifer T. ★★★★★

2. Hands@Windows, Best HDB-Approved Contractor

Hands@Windows is an HDB and BCA-approved window contractor based at Empire Technocentre in Kaki Bukit, with 566 Google reviews at 4.9 stars. They specialise exclusively in windows and window servicing for HDB flats and condominiums, making them the most focused specialist on this list for homeowners who need HDB-approved window replacement, repair, or maintenance work. Their scope includes window servicing and maintenance (annual checks required under HDB's Window Safety Programme), full window replacement with BCA-approved products, and grille installation alongside window works. As an HDB-approved contractor, Hands@Windows can legally carry out window replacement and structural window works that require official registration. For HDB flat owners who need peace of mind that their contractor is fully compliant with HDB and BCA requirements, Hands@Windows is the most appropriate choice.

📍 Address: 30 Kaki Bukit Rd 3, #04-15 Empire Technocentre, Singapore 417819
📞 Phone: +65 6749 2257
🌐 Website: window-servicing.com

"Engaged Hands@Windows for our annual HDB window servicing and replaced two faulty window hinges. The inspection report was thorough and the replacement work was done in the same visit. Fully certified and very efficient.", Alan W. ★★★★★

3. Diamond Grille System, Best Invisible Grille

Diamond Grille System is the inventor and manufacturer of the Diamond Grille System, an invisible grille solution with BCA approval and international safety certifications. Based at Crescent@Kallang on Kallang Pudding Road, they have 144 Google reviews at a perfect 5.0 stars. Diamond Grille System's product is specifically engineered for Singapore conditions: the stainless steel cable system withstands the tropical climate without rusting or losing tension, and the patented locking mechanism provides both child safety and unauthorised entry protection without obstructing the view. As the original developer of the system, their installation teams are among the most experienced invisible grille installers in Singapore. For homeowners who want the best quality invisible grille solution with proven safety certification, Diamond Grille System is the definitive choice.

📍 Address: 47 Kallang Pudding Rd, #10-04, Crescent@Kallang 349318
📞 Phone: +65 6694 8916
🌐 Website: dgs.com.sg

"Had Diamond Grille System install their invisible grille in all bedrooms and the living room balcony. The view is completely unobstructed and the cable tension is solid. The team arrived on time and completed all rooms in half a day.", Michelle L. ★★★★★

4. Endo Grilles, Best for Stainless Steel Grilles

Endo Grilles is based at Guillemard Road and has 397 Google reviews at 4.8 stars. They are one of Singapore's most reviewed grille specialists, covering a wide range of standard, stainless steel, and designer grille options for HDB flats, condominiums, and landed properties. Endo is particularly known for their stainless steel grille range, which offers superior rust resistance compared to powder-coated mild steel alternatives: a meaningful advantage in Singapore's humid, coastal atmosphere. Their showroom displays the full product range with samples of finishes and patterns, enabling clients to make informed decisions before confirming. Installation teams are experienced with both standard and custom grille configurations. For homeowners prioritising rust-free durability in their grille choice, Endo Grilles is the strongest option on this list.

📍 Address: 3 Guillemard Rd, Singapore 399684
📞 Phone: +65 9070 1414
🌐 Website: endogrilles.com

"Replaced all our HDB grilles with Endo's stainless steel option. The finish is clean, the pattern matches our renovation aesthetic, and five years in there is zero rust or discolouration: unlike our previous powder-coated grilles.", Vincent C. ★★★★★

5. M Aluminium and Glass, Best Aluminium Contractor

M Aluminium and Glass (MAG Works) is a comprehensive aluminium contractor based at Northlink Building in Woodlands with 835 Google reviews at 4.8 stars. Their scope covers aluminium windows, grilles, sliding doors, partitions, and glass works, making them the most comprehensive aluminium and glass contractor on this list. MAG Works handles both residential and commercial projects, including HDB, condominium, and landed property window replacement, grille installation, and glass partition installation. Their Woodlands base makes them particularly responsive for clients in the north of Singapore. For homeowners who want a single contractor covering windows, grilles, doors, and glass under one engagement, M Aluminium and Glass is the strongest choice on this list.

📍 Address: 10 Admiralty St, #03-10 Northlink Building, Singapore 757695
📞 Phone: +65 8660 3780
🌐 Website: magworks.sg

"MAG Works replaced our full-home windows, installed new grilles, and fitted a glass partition in the study: all under one contract. Efficient project management, clean installation, and competitive pricing for the scope.", Kevin H. ★★★★★

6. SG Gate Door Window, Best for Full-Home Windows

SG Gate Door Window is based at MEGA@Woodlands with 1,298 Google reviews at 4.8 stars. They cover gates, doors, windows, and grilles under a single contractor engagement, making them convenient for homeowners who need multiple items handled in a single project. Their product range is comprehensive and displayed in their Woodlands showroom. SG Gate Door Window is particularly popular among homeowners fitting out new BTO flats who need gate, door, and window grille installation all coordinated together. Their scale, reflected in their review volume, supports availability across Singapore with flexible scheduling. For homeowners who want one contractor to handle the full perimeter security works for their home, SG Gate Door Window is a reliable, well-reviewed option.

📍 Address: 39 Woodlands Cl, #04-09 MEGA@Woodlands, Singapore 737856
📞 Phone: +65 8833 2252
🌐 Website: gatedoorwindow.com.sg

"Used SG Gate Door Window for our BTO gate, door, and grilles. Having one contractor handle everything was a relief: coordinated all items into a single half-day installation. Quality is solid and pricing was fair.", Elaine T. ★★★★★

7. Ziam Gei Huat Aluminium, Best Established Aluminium Firm

Ziam Gei Huat Aluminium is a long-established aluminium contractor based at MEGA@Woodlands with 335 Google reviews at 4.8 stars. The firm has operated in Singapore's aluminium window and grille market for many years and brings a depth of technical knowledge that newer contractors cannot match. Their scope covers aluminium window fabrication and installation, grille supply and installation, aluminium doors, and casement, sliding, and awning window systems. ZGH Aluminium is regularly recommended for landed property and commercial projects that require non-standard window configurations or bespoke aluminium fabrication. For homeowners and developers who value a contractor with deep market experience alongside a strong review track record, Ziam Gei Huat is one of the most trusted names in the sector.

📍 Address: 39 Woodlands Cl, #03-40 MEGA@Woodlands, Singapore 737856
📞 Phone: +65 6264 3088
🌐 Website: zghaluminium.com

"ZGH Aluminium did our full-home window replacement for our landed property. They fabricated custom-sized casement windows to match our specific dimensions, and the quality of the aluminium extrusion and installation is excellent throughout.", Patrick S. ★★★★★

8. A&V Aluminium Contractor, Best for Custom Aluminium Works

A&V Aluminium Contractor is based at Woodlands Industrial Xchange and holds a 5.0-star rating across 179 verified Google reviews. Their scope covers custom aluminium fabrication, window installation, grille works, and related building materials. A&V is particularly strong on bespoke and non-standard aluminium work: projects that require custom-made window frames, unusual openings, or specific aluminium profiles that standard contractors do not carry. Their in-house fabrication capability and a perfect 5-star track record across 179 reviews make them the strongest choice on this list for homeowners with non-standard window or grille requirements. Quotations are written and detail the custom scope clearly before any work commences.

📍 Address: 71 Woodlands Ave 10, Unit 07-14 Woodlands Industrial Xchange, Singapore 737743
📞 Phone: +65 9068 6864
🌐 Website: anvaluminium.com

"A&V fabricated custom aluminium windows for our landed property extension: non-standard sizes throughout. The fabrication quality is excellent, installation was precise, and the project manager communicated clearly at every stage.", Robert L. ★★★★★

9. Encompass Homes, Best for Condo Window Works

Encompass Homes is based at Kaki Bukit with 173 Google reviews at 4.9 stars. The firm covers windows, grilles, doors, and home improvement works for condominiums and HDB flats across Singapore. Their condominium expertise is a distinguishing feature: they are experienced with MCST submission requirements, approved contractor lists, and the specific window and grille product specifications required by different condominium management offices. For condo owners who have struggled with MCST approval requirements when replacing windows or adding grilles, Encompass Homes' familiarity with the process reduces the risk of rejected submissions and rework. Quotations include the MCST-relevant specification information as standard. For condo owners who want a grille and window contractor experienced with the complexities of managed property requirements, Encompass Homes is the most appropriate choice.

📍 Address: 10 Kaki Bukit Ave 4, #04-68, Singapore 415874
📞 Phone: +65 8484 2396
🌐 Website: ehomes.com.sg

"Our condo MCST has strict grille requirements. Encompass Homes was familiar with our development's approved specifications and submitted the application on our behalf. Grilles installed and MCST-approved with zero issues.", Irene K. ★★★★★

10. Sapphire Windows, Best for Loyang Area

Sapphire Windows is based at Loyang Drive in the east of Singapore with 177 Google reviews at a perfect 5.0 stars. They cover aluminium windows, grilles, and glass works for residential and commercial clients. Their Loyang location makes them particularly responsive for clients in Pasir Ris, Loyang, Tampines, and Changi: areas underserved by contractors based in the north and west industrial clusters. The 5.0-star rating across 177 reviews reflects consistently positive client feedback on installation quality and service responsiveness. Sapphire Windows provides written quotations with clear scope and material specifications. For clients in the east of Singapore who want a local, well-reviewed aluminium window and grille specialist, Sapphire Windows is a reliable and convenient option.

📍 Address: 2 Loyang Dr, Singapore 508935
📞 Phone: +65 6542 6616
🌐 Website: sapphire.com.sg

"Sapphire replaced all our windows and installed new grilles for our Pasir Ris HDB. Fast response, came for a measurement visit within 2 days, and completed installation a week later. Clean work, no damage to walls.", Joanne Y. ★★★★★

How They Compare

What to Look for When Hiring a Window Grille Contractor in Singapore

HDB and BCA approval status. For HDB flats, window replacement and structural grille installation must be carried out by HDB-registered contractors. Verify that any contractor you engage is on HDB's Approved Contractors list for window works. Installing unapproved windows or grilles in an HDB flat can result in fines and mandatory reinstatement at the homeowner's expense.

Invisible grille certification. Not all invisible grille products are certified to the same safety standard. Look for products with Singapore-relevant safety certifications and BCA approval. The cable tension system, anchor fixing design, and locking mechanism all affect the child safety performance of invisible grilles. Contractors offering significantly lower prices for invisible grilles may be using uncertified products with inferior cable systems.

Stainless steel versus mild steel grilles. Standard powder-coated mild steel grilles are the most common and least expensive option but are susceptible to rust in Singapore's humid and coastal environment. Stainless steel grilles cost 20 to 40% more but resist corrosion significantly better. For high-floor units, sea-facing properties, or homes near the coast, stainless steel is the more durable long-term investment.

MCST requirements for condominiums. Many condominium management councils require specific grille and window designs, materials, and colours to maintain the development's external facade consistency. Before engaging a contractor, confirm the approved specifications with your MCST and ensure the contractor is familiar with the submission process. Experienced condo specialists save significant time by handling MCST submissions as part of the installation process.

Warranty on installation and product. Window and grille installations carry workmanship warranties from reputable contractors, typically 12 months. Hardware components such as hinges, locks, and cable tensioners often carry separate manufacturer warranties. Confirm both in writing before installation. Post-installation adjustments to window friction stays or grille alignment should be included in the workmanship warranty period.

Frequently Asked Questions

How much do window grilles cost in Singapore?

Standard steel grilles cost SGD 50 to SGD 120 per linear metre installed. Stainless steel grilles cost SGD 80 to SGD 180 per linear metre. Invisible grilles (cable systems) cost SGD 100 to SGD 200 per linear metre depending on product brand and certification level. A standard 3-room HDB full grille installation typically costs SGD 800 to SGD 2,000 depending on grille type and number of windows.

Do I need HDB approval to install grilles in Singapore?

For HDB flats, window grille installation does not require separate HDB approval as long as the grilles conform to HDB's approved dimensions and do not obstruct the window's emergency egress requirements. However, window replacement (changing the window frame itself) requires an HDB-registered contractor. Always confirm with your contractor whether your scope requires HDB registration or submission.

What is the difference between invisible grilles and standard grilles?

Invisible grilles use stainless steel cables tensioned between anchor points to create a child safety barrier without obstructing the view. Standard grilles use steel or stainless steel bars in a grid or decorative pattern. Invisible grilles cost more but provide an unobstructed view and are popular for high-floor units or homes with garden views. Standard grilles are more cost-effective and also deter break-ins more visibly.

How long does grille installation take for an HDB flat?

Full-home grille installation for a 4-room HDB flat (covering all bedroom and living room windows) typically takes 3 to 6 hours, often completed in a single visit. Invisible grille installation takes slightly longer due to cable threading and tension adjustment. The installation team typically requires clear access to all windows from inside the unit.

Are invisible grilles safe for children in Singapore?

BCA-certified invisible grille systems are designed to meet child safety requirements when installed correctly. The key factors are cable spacing (should not allow a child's head to pass through: typically less than 100mm between cables), anchor fixing integrity, and cable tension. Always confirm that the invisible grille product holds BCA approval and has been independently certified for child safety before installation.

How do I maintain window grilles in Singapore?

For standard grilles: wipe down monthly with a damp cloth to remove dust and salt deposits. Apply a light coat of WD-40 or silicone spray to hinged sections and locks annually. For stainless steel grilles: wipe with a damp cloth and dry immediately to prevent water spotting. For invisible grilles: check cable tension twice a year and retighten if any slack is detected. Report any bent or damaged cables to the installer immediately.

What should I look for when choosing an invisible grille brand?

Key factors: BCA approval or equivalent certification for child safety, cable diameter (at least 1.5mm stainless steel), anchor fixing design (concealed anchors are more secure), locking mechanism quality, and track record of the installer. Avoid brands with unclear certifications or cables thinner than 1.5mm.

Can I install grilles on HDB windows if I rent out my flat?

Yes. Window grilles are permitted in HDB flats regardless of whether the flat is owner-occupied or rented. If you are making changes to windows (replacing window frames rather than adding grilles to existing windows), an HDB-registered contractor must be engaged. Tenants are not permitted to make structural window modifications without the owner's consent and HDB compliance.

How do I get an HDB-approved grille contractor in Singapore?

Visit the HDB website and search the Approved Contractors list under the window servicing and installation category. Alternatively, contact the contractors directly and ask them to confirm their HDB registration number before confirming any window work. Registered contractors can provide their HDB contractor registration documentation on request.

What is the lifespan of window grilles in Singapore?

Standard powder-coated mild steel grilles last 10 to 15 years in Singapore's climate before significant rusting occurs, particularly in coastal or high-humidity locations. Stainless steel grilles last 20 to 30 years with minimal maintenance. Invisible cable grille systems last 15 to 20 years before cables require replacement, depending on exposure to salt air and UV.

Verdict

Legate Enterprise is the best window grille contractor in Singapore for most homeowners in 2026, with 7,617 verified reviews at 4.9 stars providing unparalleled quality assurance across windows, grilles, and home improvement works. For invisible grilles specifically, Diamond Grille System is the definitive specialist with BCA certification and the original patented system. HDB flat owners who need window replacement work should use Hands@Windows for their HDB and BCA compliance expertise. For a single contractor handling gate, door, and grille in one engagement, SG Gate Door Window provides the most comprehensive solution in the north of Singapore.