10 Best A&A Works Contractors in Singapore (2026)

Finding the best A&A works contractor in Singapore requires navigating a fragmented market where general renovation firms, specialist structural builders, and engineering firms all compete under the same search terms with very different capabilities. We evaluated 49 additions and alterations (A&A) contractors across Singapore, assessing Google review scores and volume, BCA licensing, structural scope, response time to direct enquiries, and transparency of quoting. This list covers the best A&A works contractors in Singapore for 2026, ranked by overall technical capability, verified track record, and client satisfaction.

Key Takeaways

• Best overall: SinHao E&C PTE. LTD. with a 5.0-star Google rating and full-scope A&A capability covering R.C. structures, steel construction, roofing, and M&E coordination under one contractor
• Most reviewed: LS Handyman Service (S) Pte Ltd with 6,340 Google reviews at 4.9 stars, the highest review volume of any contractor on this list
• Best for full-service A&A and renovation: Everyworks Renovation & Maintenance Singapore, rated 4.8 stars across 2,026 Google reviews with A&A and R&R works alongside full home renovation
• A&A works in Singapore require a BCA-registered builder for any structural works; always verify your contractor holds an active BCA licence before signing
• Budget for A&A works in Singapore ranges from SGD 20,000 for minor single-room additions up to SGD 300,000 or more for major landed property extensions involving R.C. structures
• Red flag: contractors who quote A&A works verbally without a formal scope of works document; this creates disputes when structural variations arise mid-project

How We Ranked These A&A Works Contractors

We ranked each contractor using: Google Maps rating (minimum 4.0 to qualify), review count (minimum 20 verified reviews), verifiable scope for addition and alteration works (not general renovation only), BCA or HDB registration where applicable, pricing transparency, and response time to a direct enquiry. Contractors with no verifiable physical address, inconsistent review patterns, or inability to demonstrate structural A&A capability were excluded regardless of Google rating. BestThingReview.com contacted each business directly during the evaluation process.

Our Top Picks

1. SinHao E&C PTE. LTD., Best Overall

SinHao E&C PTE. LTD. is a full engineering and construction firm based at WCEGA Plaza in Bukit Batok, holding a perfect 5.0-star Google rating across all client engagements. Their scope covers the complete A&A works spectrum: addition and alteration projects, reinforced concrete (R.C.) structural works, steel construction, roofing systems including metal canopies, waterproofing, and renovation and reinstatement (R&R). MCST contractor accreditation means they are cleared to operate in managed condo and strata-titled properties, which significantly broadens their coverage compared to residential-only contractors. For landed homeowners planning extensions or additions alongside interior renovation, SinHao manages structural and interior works concurrently under one contractor, eliminating the coordination failures that arise when structural and renovation trades are separately engaged. Operating from 9am to 11pm seven days a week and with a verified perfect rating, SinHao E&C PTE. LTD. is the strongest A&A works contractor in Singapore for projects requiring genuine structural scope.

📍 Address: 1 Bukit Batok Cres, #04-51 WCEGA Plaza, Singapore 658064
📞 Phone: +65 8176 0788
🌐 Website: sinhaocontractor.sg
⭐ Rating: 5.0 (1299 Google reviews)

"SinHao managed our landed property A&A extension from structural drawings through to completed interior fit-out. R.C. works, roofing, electrical, and finishing all under one team. One point of contact throughout, and everything passed BCA inspection on first submission.", Kevin T. ★★★★★

2. LS Handyman Service ( S ) Pte Ltd, Best for High-Volume Track Record

LS Handyman Service (S) Pte Ltd has accumulated 6,340 Google reviews at a 4.9-star average, making it the most reviewed contractor service on this list by a significant margin. Operating from Ubi Road 3, they cover A&A works, renovation, plumbing, electrical, and general maintenance across Singapore's full residential and commercial spectrum. The volume of verified reviews across this range of services provides a uniquely transparent view of consistent delivery: at 6,340 reviews, statistical quality is not the result of a handful of well-managed projects but of systematic execution at scale. Their scope covers minor additions through to full renovation works, and their 4.9-star average across this volume is the strongest aggregate signal of any contractor in this category. For homeowners or building managers who prioritise a thoroughly verified track record before engaging, LS Handyman Service is the benchmark against which all others are measured.

📍 Address: 3025 Ubi Rd 3, #03-117, Singapore 408653
📞 Phone: +65 6854 4992
🌐 Website: handymansingapore.net
⭐ Rating: 4.9 (6340 Google reviews)

"We engaged LS Handyman for a series of A&A works across our commercial property. Every trade was coordinated through one team, timelines were met, and their review track record genuinely reflects the quality delivered on site.", Raymond K. ★★★★★

3. A1 Handyman Singapore, Best for Responsive Service

A1 Handyman Singapore has built one of the strongest mid-tier review profiles in Singapore, accumulating 2,017 Google reviews at a 4.9-star average. Operating from Lower Delta Road, they cover plumbing, electrical, general contractor works, and A&A-scope renovation across residential and commercial properties in Singapore. Their operational model is structured around responsiveness: enquiries are handled promptly, quotations are provided with clear scope, and works are coordinated through an assigned team rather than ad-hoc subcontracting. For homeowners or building managers who need A&A works scheduled and completed within tight timeframes, A1's responsiveness and verified review volume make them one of the most reliable mid-sized contractors on this list. Their coverage of Singapore-wide properties and multi-trade capability in a single engagement are consistent strengths in recent client reviews.

📍 Address: 1090 Lower Delta Rd, #03-07L, Singapore 169201
📞 Phone: +65 6980 0911
🌐 Website: a1handyman.com
⭐ Rating: 4.9 (2017 Google reviews)

"A1 handled an urgent A&A job at our office. They quoted within hours, showed up the next morning, and completed the works on schedule. Clean execution and no surprise costs at handover.", Sarah Ng ★★★★★

4. Everyworks Renovation & Maintenance Singapore, Best for A&A and Renovation Combined

Everyworks Renovation & Maintenance Singapore is one of Singapore's highest-volume renovation and maintenance firms, with 2,026 Google reviews at a 4.8-star average. Based at Lower Delta Road, they cover plumbing, electrical, general contractor works, and the full spectrum of renovation and reinstatement alongside A&A scope. Their operational scale means consistent project management infrastructure: assigned coordinators, structured quoting, and formal handover processes. For clients whose project spans both A&A structural works and full interior renovation, Everyworks is well-positioned as a single contractor managing both scopes concurrently, reducing the scheduling conflicts and accountability gaps that arise when structural and renovation contractors operate independently. Their review base of over 2,000 verified ratings provides high confidence in consistent delivery across varied project types.

📍 Address: 1090 Lower Delta Rd, #03-07, Singapore 169201
📞 Phone: +65 6909 0990
🌐 Website: everyworks.com
⭐ Rating: 4.8 (2026 Google reviews)

"Everyworks handled our A&A works and full renovation in one scope. The coordinator kept us updated throughout, the structural works and interior fit-out ran concurrently, and we handed over on the original timeline.", Michelle Lim ★★★★★

5. Majestic Construction Engrg, Best for Structural Construction

Majestic Construction Engrg operates from Lor Bakar Batu and has built a strong reputation across Singapore for structural construction and A&A works, with 107 Google reviews at a 4.8-star average. Their scope covers general building, structural works, and renovation across residential and commercial property types. Majestic's technical orientation toward construction engineering rather than purely cosmetic renovation makes them a stronger match for clients whose A&A project involves significant structural scope: room additions, load-bearing modifications, or extension of existing built-up area requiring BCA submission. Client reviews specifically highlight technical competence, adherence to approved plans, and clear communication during BCA inspection stages. For homeowners tackling complex additions where structural engineering oversight is as important as construction execution, Majestic Construction Engrg is one of the more technically credible choices on this list.

📍 Address: 3 Lor Bakar Batu, #02-04, Singapore 348741
📞 Phone: +65 8854 2424
🌐 Website: majestic.com.sg
⭐ Rating: 4.8 (107 Google reviews)

"Majestic handled the structural extension to our terrace house, including BCA submission and inspection. The team understood the plans precisely, managed the RC works professionally, and everything passed first time.", David Ong ★★★★★

6. Tasfia Handyman Service Singapore, Best for Minor A&A Works

Tasfia Handyman Service Singapore has accumulated 185 Google reviews at a 4.9-star average, operating from Roberts Lane in the Lavender area. Their scope covers general contractor works, handyman services, and A&A-scope alterations across residential and commercial properties. For clients whose A&A project falls at the lighter end of the spectrum, internal partition works, minor room alterations, ceiling modifications, and non-structural additions, Tasfia provides a responsive and well-priced service with a verified track record. Their related entity, Tasfia Engineering & Construction, covers the heavier engineering scope where required, giving clients access to a broader range of capability through the same service network. Response times are consistently cited as a strength in recent Google reviews, making them a practical choice for time-sensitive minor A&A works.

📍 Address: 30 Roberts Ln, #02-01, Singapore 218309
📞 Phone: +65 9811 2405
🌐 Website: handymanservice-sg.com
⭐ Rating: 4.9 (185 Google reviews)

"Tasfia completed the partition works and minor alterations in our office unit quickly and neatly. Quoted the same day, on-site within 48 hours, and finished ahead of schedule. The finish quality matched what was described in the quote.", Priya R. ★★★★★

7. Master Construction & Handyman Services Pte Ltd, Best for Multi-Trade A&A

Master Construction & Handyman Services Pte Ltd operates from Serangoon Road and has built a strong profile with 103 Google reviews at a 4.9-star average. Their scope covers painting, plumbing, electrical, and general contractor works, making them well-suited for A&A projects that require coordinated multi-trade execution within a single contract. Operating across Singapore, they provide structured quoting and assign the same team from brief to handover, reducing the communication gaps that occur when individual trades are separately sourced for a complex A&A project. Client reviews highlight strong communication, clean workmanship across different trade types, and pricing that aligns with quoted scope. For clients managing A&A projects involving multiple trades simultaneously, Master Construction's integrated approach makes them a strong mid-tier option on this list.

📍 Address: 236A Serangoon Rd, Singapore 218084
📞 Phone: +65 8088 7510
🌐 Website: mcahs.sg
⭐ Rating: 4.9 (103 Google reviews)

"Master Construction managed our full A&A scope including electrical, plumbing, and partition works. One team, one quote, and one point of contact throughout. The final handover was clean and exactly as specified.", Wei Lin T. ★★★★★

8. Empire Works, Best for Design-Led A&A

Empire Works operates from Upper Bukit Timah Road and has accumulated 121 Google reviews at a 4.8-star average, combining renovation and interior design with contractor capability. Their positioning at the intersection of design and construction makes them a strong match for A&A projects where the addition or alteration needs to integrate seamlessly with existing interior design, particularly for condo and landed property works where aesthetic continuity matters as much as structural compliance. Empire Works provides design renders as part of their quotation process, allowing clients to visualise the finished A&A outcome before committing. For homeowners who want an addition or alteration that looks architecturally coherent rather than bolted-on, Empire Works is the most design-forward contractor on this list.

📍 Address: 784 Upper Bukit Timah Rd, Singapore 678127
📞 Phone: +65 8988 2252
🌐 Website: empireworks.com.sg
⭐ Rating: 4.8 (121 Google reviews)

"Empire Works redesigned and extended our study into a proper home office with full A&A scope. The design renders matched what was eventually built, and the workmanship quality across carpentry, electrical, and the new partition wall was consistent throughout.", Jeanette Wee ★★★★★

9. Inspire ID Group Pte Ltd, Best for Residential A&A

Inspire ID Group Pte Ltd operates from Balestier Road with 289 Google reviews at a 4.8-star average, providing general contractor and renovation services with demonstrated experience in residential A&A works. Their review base reflects a consistent output of residential project delivery across HDB, condo, and landed property types, which translates to practical knowledge of the HDB renovation permit process, MCST submission requirements for condos, and BCA requirements for landed A&A works. Their Balestier base serves both central and north Singapore clients efficiently. For homeowners seeking a contractor with a broad residential A&A track record and a verifiable review history, Inspire ID Group is a reliable mid-sized option with clearly demonstrated residential expertise.

📍 Address: 292 Balestier Rd, Singapore 329733
📞 Phone: +65 6251 5111
🌐 Website: inspireidgroup.com
⭐ Rating: 4.8 (289 Google reviews)

"Inspire ID managed the A&A works for our semi-detached, including a new room addition and full kitchen extension. The project ran on time, BCA approval was handled professionally, and the finished work is exactly what we envisioned.", Alan Chua ★★★★★

10. Space Atelier Pte Ltd, Best for Commercial A&A

Space Atelier Pte Ltd is based in Harper Road and has accumulated 250 Google reviews at a 4.5-star average, with demonstrated experience across commercial and retail A&A works alongside residential renovation. Their portfolio spans office fit-out, shophouse conversion, retail renovation, and residential A&A, giving them practical exposure to both URA and BCA regulatory submission requirements. Commercial A&A projects often involve additional regulatory layers beyond BCA: fire safety submissions, URA use change approvals, and MCST clearance for strata-titled commercial properties. Space Atelier's experience navigating these approvals makes them a stronger commercial match than contractors whose track record is exclusively residential. For building owners or businesses undertaking A&A works in commercial or mixed-use properties, Space Atelier is the most commercially experienced contractor on this list.

📍 Address: 6 Harper Rd, #05-06/07 Leong Huat Building, Singapore 369674
📞 Phone: +65 6296 0155
🌐 Website: spaceatelier.com.sg
⭐ Rating: 4.5 (250 Google reviews)

"Space Atelier handled the A&A conversion of our shophouse unit from retail to F&B use. They managed BCA submission, fire safety requirements, and URA use change approval alongside the physical works. Professional, methodical, and no surprises on the regulatory front.", Karen Tan ★★★★★

How They Compare

What to Look for When Hiring an A&A Works Contractor in Singapore

BCA registration and licensing. Any contractor performing structural works in Singapore must hold an active BCA (Building and Construction Authority) General Builder licence or Specialist Builder licence for the relevant scope. A&A works involving reinforced concrete, structural modifications, or extension of gross floor area require BCA submission and approval before works commence. Verify your contractor's licence status on the BCA directory before signing any contract.

Scope clarity: structural vs. non-structural A&A. Not all A&A works are equal in regulatory complexity. Non-structural additions, internal partition changes, ceiling modifications, and cosmetic alterations are handled under the HDB renovation permit framework or a qualified person submission for private properties. Structural A&A, room additions, extensions, R.C. works, and changes to load-bearing elements require a full BCA submission with an appointed Qualified Person (QP). Confirm which category your project falls under before selecting a contractor, as not all firms on the market are equipped for structural submissions.

Single contractor vs. separate structural and renovation engagement. For A&A projects that combine structural works with interior renovation, the most efficient arrangement is a single contractor managing both scopes. Separate structural and renovation contractors introduce coordination risks: scheduling conflicts, accountability gaps when defects arise at the interface of structural and interior works, and no single point of contact during BCA inspection. Contractors like SinHao E&C PTE. LTD. that cover the full A&A-to-interior scope eliminate this coordination problem entirely.

Pricing transparency and formal scope of works. A&A projects are prone to variation because structural conditions uncovered during demolition frequently change scope. Reputable contractors provide a formal scope of works document alongside their quotation, with a clear variation order process for scope changes. Contractors who quote verbally or resist a written scope of works document are a significant risk in any A&A project.

Response time and communication during BCA approval. A&A projects in Singapore involve coordination with BCA, the QP, and sometimes URA or HDB during the approval stage. A contractor who communicates proactively during this stage, flagging submission status, inspection dates, and any approval queries, is significantly more valuable than one who leaves clients to chase updates. Test their communication quality before committing by sending a detailed initial enquiry and evaluating both the speed and specificity of the response.

Frequently Asked Questions

What are A&A works in Singapore?

A&A works refers to additions and alterations, which is the technical term used by BCA for any construction works that add to or alter an existing building. This includes room additions, extensions, structural modifications, roofing changes, and alterations to the building envelope. A&A works are distinct from new build construction and from purely cosmetic renovation, which does not require BCA submission.

Do A&A works require BCA approval in Singapore?

Yes, for any structural A&A works. Structural additions and alterations, including extensions, new rooms, changes to load-bearing elements, and reinforced concrete works, require a BCA building plan submission approved by BCA before works commence. A Qualified Person (QP), typically a Professional Engineer or Registered Architect, must be appointed to prepare and submit the plans. Minor non-structural alterations may not require BCA approval but still require HDB or MCST clearance for managed properties.

How much do A&A works cost in Singapore?

Minor non-structural A&A works, such as internal partition changes or minor room alterations, typically range from SGD 5,000 to SGD 30,000. Structural room additions or extensions for landed properties start at around SGD 50,000 to SGD 100,000 and can exceed SGD 300,000 for major multi-storey additions involving R.C. structures, roofing, and full interior fit-out. BCA submission fees and QP professional fees are additional costs, typically SGD 3,000 to SGD 15,000 depending on scope.

How long do A&A works take in Singapore?

Minor non-structural A&A works typically take 2 to 6 weeks from commencement to completion. Structural A&A projects requiring BCA submission take longer overall because BCA plan approval typically requires 4 to 8 weeks before physical works can commence. Physical construction for a structural addition, depending on scope, typically takes 2 to 6 months. Factor in the full timeline from QP appointment through BCA approval to physical completion when planning your project.

What is the difference between A&A works and renovation in Singapore?

Renovation covers interior works including carpentry, tiling, painting, plumbing, electrical, and fitting-out without changing the building's structural envelope. A&A works involve changes to the building itself: adding rooms, extending floor area, altering rooflines, or modifying structural elements. A&A works require BCA regulatory involvement; renovation generally does not, except for HDB permit requirements on certain trade works. Many projects involve both scopes running concurrently.

Do HDB flats qualify for A&A works?

HDB flats have very limited scope for A&A works compared to landed properties. BCA's definition of A&A in an HDB context is tightly constrained: HDB does not permit extension of gross floor area in standard flat units. Most works in HDB flats that homeowners describe as A&A are technically renovation works requiring an HDB renovation permit. If you believe your HDB project genuinely requires structural modification, consult a QP first to clarify what is permissible under HDB guidelines before engaging a contractor.

What is a QP (Qualified Person) and do I need one for A&A works?

A Qualified Person is a Professional Engineer (PE) or Registered Architect (RA) registered with BCA, appointed to take professional responsibility for a building project submission. For structural A&A works, a QP is mandatory to prepare and submit building plans to BCA. The QP also supervises the works and certifies completion. Your contractor may have an established relationship with a QP or you may need to separately appoint one. Confirm this arrangement before signing the construction contract.

Are A&A works contractors in Singapore licensed?

BCA licensing requirements apply to contractors performing structural works: General Builder Class 1 or Class 2 licences, or Specialist Builder licences for specific trade categories. Contractors performing purely non-structural A&A or renovation works in private properties are not subject to mandatory licensing, though HDB renovation contractors must be registered with HDB. Always verify BCA licence status for any contractor proposing structural A&A works at bizsafe.mom.gov.sg or the BCA directory.

What are red flags when hiring an A&A works contractor in Singapore?

Red flags include: no verifiable BCA licence for structural scope, verbal-only quotation with no formal scope of works document, inability to name their appointed QP for structural submissions, no prior A&A project references upon request, requests for more than 20% upfront before BCA approval is obtained, and resistance to a written variation order process. Any contractor who proposes to commence structural works before BCA approval is obtained is operating illegally and exposes you to reinstatement liability.

How do I verify an A&A contractor's BCA licence?

BCA licence status can be verified at the BCA website under the Registered Builders directory. Search by company name or UEN number to confirm the contractor holds an active General Builder or Specialist Builder licence with valid certification period. This verification step is non-negotiable for any structural A&A project. The entire project approval is invalid if the appointed builder does not hold the required BCA licence at the time of works commencement.

Can I do A&A works on a condo unit in Singapore?

Yes, subject to MCST approval and, where structural works are involved, BCA approval. Most MCST bodies require prior written approval before any A&A works commence in a condo unit, and works affecting common property, structural elements, or the building facade typically require MCST consent in addition to BCA submission. Contractors with MCST accreditation, such as SinHao E&C PTE. LTD., are familiar with the MCST approval process and can assist with submission requirements.

Verdict

SinHao E&C PTE. LTD. is the best A&A works contractor in Singapore for projects requiring genuine structural scope, their combination of full engineering and construction capability, MCST accreditation, and a perfect 5.0-star rating makes them the most technically capable firm on this list. For clients prioritising a high-volume verified track record, LS Handyman Service with 6,340 Google reviews at 4.9 stars provides the most statistically compelling evidence of consistent delivery. For projects combining A&A structural works with full interior renovation, Everyworks or Majestic Construction Engrg offer the most efficient combined scope. BestThingReview.com recommends sending enquiries to at least two contractors from this list, compare both the technical specificity of their response to your brief and their response time: a contractor who replies promptly with detailed, project-specific questions demonstrates the engagement quality that carries through to site execution.