20 Best Addition & Alteration (A&A) Contractors in Singapore

A&A works sit between a renovation and a new build. Think knocking through walls, adding a mezzanine, changing a shopfront or reworking a floor plate. Because some of that touches structure, it usually needs a qualified person and authority approvals, and the contractor needs to be set up for building work, not just finishing.
That's why this guide starts from BCA's general building workhead, CW01. Every firm here holds it and also does renovation or reinstatement work. We ranked them on their CW01 grade (C3 is the entry grade, then C2, C1, B2, B1, A2 and A1), how long they've been incorporated, what other BCA workheads they carry, and how much of their public record checks out.
How this list was ranked
Each firm gets 0 to 5 points on four things, multiplied by a weight: BCA CW01 (General Building) grade ×4, years since incorporation ×2, other BCA workheads ×2, and how complete its public record is ×1. The total is scaled to 10. We checked 64 firms and show the top 20. Google reviews are shown as not checked until we've checked them for every firm here. Full method
Quick comparison
| # | Company | Area | Score |
|---|---|---|---|
| 1 | Sunray Woodcraft Construction Pte. Ltd. | Sungei Kadut | 9.6 |
| 2 | Seng Foo Building Construction Pte. Ltd. | Bukit Batok | 9.6 |
| 3 | Anderco Pte. Ltd. | Tuas | 9.3 |
| 4 | Tong Hai Yang Construction Pte. Ltd. | Hougang | 9.1 |
| 5 | Suncity Contracts Pte. Ltd. | Bishan | 8.4 |
| 6 | Tcg Construction Pte. Ltd. | Museum | 8.4 |
| 7 | Bestlink Construction Pte. Ltd. | Sembawang | 8.4 |
| 8 | Tang's Engineering Pte Ltd | Bedok | 8.2 |
| 9 | YNY Design + Construction Pte. Ltd. | Sembawang | 8.0 |
| 10 | Witflux Engineering Pte. Ltd. | Yishun | 7.8 |
| 11 | Leap Integrated Pte Ltd | Toa Payoh | 7.8 |
| 12 | Mutiara (FE) Pte. Ltd. | Tuas | 7.8 |
| 13 | Builders Alliance Pte. Ltd. | Tuas | 7.6 |
| 14 | Sing Tatt Construction Pte. Ltd. | Woodlands | 7.6 |
| 15 | SPACElogic Pte. Ltd. | Tampines | 7.6 |
| 16 | Ancon Anda Pte. Ltd. | Hougang | 7.3 |
| 17 | Hetat Pte. Ltd. | Tuas | 7.3 |
| 18 | Perform Industries Pte. Ltd. | Ang Mo Kio | 7.3 |
| 19 | Everise Construction Pte. Ltd. | Geylang | 7.3 |
| 20 | Inn Interior Enterprise Pte Ltd | Clementi | 7.1 |
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The ranking
Sunray Woodcraft Construction Pte. Ltd.
9.6/10Sunray Woodcraft Construction was incorporated in 1987, so about 39 years ago, and its registered office is in Sungei Kadut in the North region. BCA lists it under CW01 at grade A1 (valid to 1 January 2027), and it also holds CR06, ME01, ME05, ME06. When we checked its website it described renovation, fit-out work.
- Registered address
- 9 Sungei Kadut Street 3 Sunray Building, Singapore 729143
- UEN
- 198703016K
- Incorporated
- 1987 (39 yrs)
- BCA CW01
- Grade A1, valid to 1 January 2027
- Other BCA workheads
- CR06 L6, ME01 L6, ME05 L6, ME06 L5
- HDB DRC listed
- No / not on record
- Office phone
- +65 6566 2311
- Website
- sunray.com.sg
- Google reviews
- Not checked yet, not scored
How it scored
- BCA CW01 grade5 × 4
- Years trading5 × 2
- Other BCA workheads5 × 2
- Public record completeness3 × 1
Record checked 16 October 2026 · source
Seng Foo Building Construction Pte. Ltd.
9.6/10Seng Foo Building Construction was incorporated in 1988, so about 38 years ago, and its registered office is in Bukit Batok in the West region. BCA lists it under CW01 at grade B1 (valid to 1 January 2027), and it also holds CR09, CW02, ME05, ME06. When we checked its website it described renovation, fit-out work.
- Registered address
- 2 Bukit Batok Street 23 #02-01 Bukit Batok Connection, Singapore 659554
- UEN
- 198801331R
- Incorporated
- 1988 (38 yrs)
- BCA CW01
- Grade B1, valid to 1 January 2027
- Other BCA workheads
- CW02 C3, CR09 L4, ME05 L1, ME06 L1
- HDB DRC listed
- No / not on record
- Office phone
- +65 6562 2235
- Website
- sengfoo.com
- Google reviews
- Not checked yet, not scored
How it scored
- BCA CW01 grade5 × 4
- Years trading5 × 2
- Other BCA workheads5 × 2
- Public record completeness3 × 1
Record checked 16 October 2026 · source
Anderco Pte. Ltd.
9.3/10Based in Tuas in the West region, Anderco has 32 years on ACRA's books (incorporated 1994). Its CW01 registration is grade B1 and it also carries 3 other BCA workheads. When we checked its website it described alteration, reinstatement work.
- Registered address
- 3 Tuas View Circuit Lbg Building, Singapore 637645
- UEN
- 199400384G
- Incorporated
- 1994 (32 yrs)
- BCA CW01
- Grade B1, valid to 1 August 2027
- Other BCA workheads
- CW02 C1, CR01 Single Grade, CR06 L3
- HDB DRC listed
- No / not on record
- Office phone
- +65 6862 0049
- Website
- anderco.com.sg
- Google reviews
- Not checked yet, not scored
How it scored
- BCA CW01 grade5 × 4
- Years trading5 × 2
- Other BCA workheads4 × 2
- Public record completeness4 × 1
Record checked 16 October 2026 · source
Tong Hai Yang Construction Pte. Ltd.
9.1/10On BCA's register it holds CW01 at grade B1 (valid to 1 July 2027). The company's been around since 1983 and is based in Hougang in the North-East region. Other workheads: CR06, CW02, ME05. When we checked its website it described renovation, fit-out work.
- Registered address
- 203 Hougang Street 21 #04-79, Singapore 530203
- UEN
- 198301377N
- Incorporated
- 1983 (43 yrs)
- BCA CW01
- Grade B1, valid to 1 July 2027
- Other BCA workheads
- CW02 C1, CR06 L4, ME05 L2
- HDB DRC listed
- No / not on record
- Office phone
- +65 6282 6726
- Website
- tonghaiyang.com
- Google reviews
- Not checked yet, not scored
How it scored
- BCA CW01 grade5 × 4
- Years trading5 × 2
- Other BCA workheads4 × 2
- Public record completeness3 × 1
Record checked 16 October 2026 · source
Suncity Contracts Pte. Ltd.
8.4/10Based in Bishan in the Central region, Suncity Contracts has 29 years on ACRA's books (incorporated 1997). Its CW01 registration is grade B1 and it also carries 1 other BCA workhead. When we checked its website it described renovation, fit-out work.
- Registered address
- 26 Sin Ming Lane #04-112 Midview City, Singapore 573971
- UEN
- 199700239N
- Incorporated
- 1997 (29 yrs)
- BCA CW01
- Grade B1, valid to 1 July 2028
- Other BCA workheads
- CR06 L4
- HDB DRC listed
- No / not on record
- Office phone
- +65 6837 3779
- Website
- suncity.com.sg
- Google reviews
- Not checked yet, not scored
How it scored
- BCA CW01 grade5 × 4
- Years trading5 × 2
- Other BCA workheads2 × 2
- Public record completeness4 × 1
Record checked 16 October 2026 · source
Tcg Construction Pte. Ltd.
8.4/10On BCA's register it holds CW01 at grade B1 (valid to 1 July 2027). The company's been around since 1999 and is based in Museum in the Central region. Other workheads: CR06. When we checked its website it described renovation, fit-out work.
- Registered address
- 180 Clemenceau Avenue #01-01 Haw Par Centre, Singapore 239922
- UEN
- 199901695H
- Incorporated
- 1999 (27 yrs)
- BCA CW01
- Grade B1, valid to 1 July 2027
- Other BCA workheads
- CR06 L6
- HDB DRC listed
- No / not on record
- Office phone
- +65 6533 3833
- Website
- tcgconstruction.com.sg
- Google reviews
- Not checked yet, not scored
How it scored
- BCA CW01 grade5 × 4
- Years trading5 × 2
- Other BCA workheads2 × 2
- Public record completeness4 × 1
Record checked 16 October 2026 · source
Bestlink Construction Pte. Ltd.
8.4/10On BCA's register it holds CW01 at grade B2 (valid to 1 July 2027). The company's been around since 1996 and is based in Sembawang in the North region. Other workheads: CR06, CR09, CW02. When we checked its website it described renovation, fit-out work.
- Registered address
- 15A Senoko Way, Singapore 758037
- UEN
- 199603379E
- Incorporated
- 1996 (30 yrs)
- BCA CW01
- Grade B2, valid to 1 July 2027
- Other BCA workheads
- CW02 C3, CR06 L1, CR09 L1
- HDB DRC listed
- No / not on record
- Office phone
- +65 6366 1112
- Website
- bestlink.com.sg
- Google reviews
- Not checked yet, not scored
How it scored
- BCA CW01 grade4 × 4
- Years trading5 × 2
- Other BCA workheads4 × 2
- Public record completeness4 × 1
Record checked 16 October 2026 · source
Tang's Engineering Pte Ltd
8.2/10Tang's Engineering was incorporated in 1999, so about 27 years ago, and its registered office is in Bedok in the East region. BCA lists it under CW01 at grade B2 (valid to 1 July 2027), and it also holds CR06, CW02, ME05.
- Registered address
- 30 Kaki Bukit Industrial Terrace #02-01, Singapore 416110
- UEN
- 199900885H
- Incorporated
- 1999 (27 yrs)
- BCA CW01
- Grade B2, valid to 1 July 2027
- Other BCA workheads
- CW02 C2, CR06 L4, ME05 L1
- HDB DRC listed
- No / not on record
- Office phone
- +65 6346 8008
- Website
- tangsengineering.com
- Google reviews
- Not checked yet, not scored
How it scored
- BCA CW01 grade4 × 4
- Years trading5 × 2
- Other BCA workheads4 × 2
- Public record completeness3 × 1
Record checked 16 October 2026 · source
YNY Design + Construction Pte. Ltd.
8.0/10Based in Sembawang in the North region, YNY Design + Construction has 25 years on ACRA's books (incorporated 2001). Its CW01 registration is grade C1 and it also carries 4 other BCA workheads. It's on HDB's Directory of Renovation Contractors.
- Registered address
- 10 Admiralty Street #06-47 North Link Building, Singapore 757695
- UEN
- 200104444Z
- Incorporated
- 2001 (25 yrs)
- BCA CW01
- Grade C1, valid to 1 August 2028
- Other BCA workheads
- CW02 C3, CR06 L4, ME04 L1, ME05 L1
- HDB DRC listed
- Yes
- Office phone
- +65 6221 1367
- Website
- yny.com.sg
- Google reviews
- Not checked yet, not scored
How it scored
- BCA CW01 grade3 × 4
- Years trading5 × 2
- Other BCA workheads5 × 2
- Public record completeness4 × 1
Record checked 16 October 2026 · source
Witflux Engineering Pte. Ltd.
7.8/10On BCA's register it holds CW01 at grade B2 (valid to 1 May 2027). The company's been around since 2011 and is based in Yishun in the North region. Other workheads: CR06, CR09, CW02. When we checked its website it described renovation, fit-out work.
- Registered address
- 1 Yishun Industrial Street 1 #04-23 A'Posh Bizhub, Singapore 768160
- UEN
- 201133226K
- Incorporated
- 2011 (15 yrs)
- BCA CW01
- Grade B2, valid to 1 May 2027
- Other BCA workheads
- CW02 C1, CR06 L2, CR09 L3
- HDB DRC listed
- No / not on record
- Office phone
- +65 6262 3435
- Website
- witflux.com.sg
- Google reviews
- Not checked yet, not scored
How it scored
- BCA CW01 grade4 × 4
- Years trading4 × 2
- Other BCA workheads4 × 2
- Public record completeness3 × 1
Record checked 16 October 2026 · source
Leap Integrated Pte Ltd
7.8/10Leap Integrated was incorporated in 2000, so about 26 years ago, and its registered office is in Toa Payoh in the Central region. BCA lists it under CW01 at grade C1 (valid to 1 September 2028), and it also holds CR01, CR06, ME01, ME05, ME06 and more.
- Registered address
- 8 Pereira Road #03-02, Singapore 368026
- UEN
- 200008266Z
- Incorporated
- 2000 (26 yrs)
- BCA CW01
- Grade C1, valid to 1 September 2028
- Other BCA workheads
- CR01 Single Grade, CR06 L5, ME01 L4, ME05 L5, ME06 L4, ME12 L4, ME15 L5
- HDB DRC listed
- No / not on record
- Office phone
- +65 6291 1918
- Website
- leap-integrated.com.sg
- Google reviews
- Not checked yet, not scored
How it scored
- BCA CW01 grade3 × 4
- Years trading5 × 2
- Other BCA workheads5 × 2
- Public record completeness3 × 1
Record checked 16 October 2026 · source
Mutiara (FE) Pte. Ltd.
7.8/10Based in Tuas in the West region, Mutiara (FE) has 22 years on ACRA's books (incorporated 2004). Its CW01 registration is grade C1 and it also carries 4 other BCA workheads.
- Registered address
- 17B Tuas Road, Singapore 637815
- UEN
- 200406336W
- Incorporated
- 2004 (22 yrs)
- BCA CW01
- Grade C1, valid to 1 January 2028
- Other BCA workheads
- CW02 C3, CR06 L4, CR09 L1, ME06 L1
- HDB DRC listed
- No / not on record
- Office phone
- +65 6462 3393
- Website
- mutiara.com.sg
- Google reviews
- Not checked yet, not scored
How it scored
- BCA CW01 grade3 × 4
- Years trading5 × 2
- Other BCA workheads5 × 2
- Public record completeness3 × 1
Record checked 16 October 2026 · source
Builders Alliance Pte. Ltd.
7.6/10On BCA's register it holds CW01 at grade B2 (valid to 1 July 2027). The company's been around since 2004 and is based in Tuas in the West region. Other workheads: CR06. When we checked its website it described renovation, fit-out work.
- Registered address
- 29 Tuas View Walk 2, Singapore 637563
- UEN
- 200401491M
- Incorporated
- 2004 (22 yrs)
- BCA CW01
- Grade B2, valid to 1 July 2027
- Other BCA workheads
- CR06 L2
- HDB DRC listed
- No / not on record
- Office phone
- +65 6363 6030
- Website
- buildersalliance.com.sg
- Google reviews
- Not checked yet, not scored
How it scored
- BCA CW01 grade4 × 4
- Years trading5 × 2
- Other BCA workheads2 × 2
- Public record completeness4 × 1
Record checked 16 October 2026 · source
Sing Tatt Construction Pte. Ltd.
7.6/10Based in Woodlands in the North region, Sing Tatt Construction has 8 years on ACRA's books (incorporated 2018). Its CW01 registration is grade B2 and it also carries 3 other BCA workheads. It's on HDB's Directory of Renovation Contractors.
- Registered address
- 39 Woodlands Close #08-57 Mega@Woodlands, Singapore 737856
- UEN
- 201803029E
- Incorporated
- 2018 (8 yrs)
- BCA CW01
- Grade B2, valid to 1 July 2027
- Other BCA workheads
- CW02 C1, CR01 Single Grade, CR06 L3
- HDB DRC listed
- Yes
- Office phone
- +65 6721 9536
- Website
- sgsingtatt.wixsite.com
- Google reviews
- Not checked yet, not scored
How it scored
- BCA CW01 grade4 × 4
- Years trading3 × 2
- Other BCA workheads4 × 2
- Public record completeness4 × 1
Record checked 16 October 2026 · source
SPACElogic Pte. Ltd.
7.6/10SPACElogic was incorporated in 2002, so about 24 years ago, and its registered office is in Tampines in the East region. BCA lists it under CW01 at grade C1 (valid to 1 October 2027), and it also holds CR06, ME01, ME05. It's on HDB's Directory of Renovation Contractors.
- Registered address
- 6 Changi South Street 1, Singapore 486792
- UEN
- 200208833D
- Incorporated
- 2002 (24 yrs)
- BCA CW01
- Grade C1, valid to 1 October 2027
- Other BCA workheads
- CR06 L5, ME01 L2, ME05 L2
- HDB DRC listed
- Yes
- Office phone
- +65 6745 1733
- Website
- spacelogic.asia
- Google reviews
- Not checked yet, not scored
How it scored
- BCA CW01 grade3 × 4
- Years trading5 × 2
- Other BCA workheads4 × 2
- Public record completeness4 × 1
Record checked 16 October 2026 · source
Ancon Anda Pte. Ltd.
7.3/10Ancon Anda was incorporated in 1983, so about 43 years ago, and its registered office is in Hougang in the North-East region. BCA lists it under CW01 at grade B2 (valid to 1 January 2027), and it also holds CR06. When we checked its website it described renovation, fit-out work.
- Registered address
- 2 Defu South Street 1 #07-05 Jtc Defu Industrial City, Singapore 533755
- UEN
- 198306109Z
- Incorporated
- 1983 (43 yrs)
- BCA CW01
- Grade B2, valid to 1 January 2027
- Other BCA workheads
- CR06 L1
- HDB DRC listed
- No / not on record
- Office phone
- +65 6382 1911
- Website
- anconanda.com
- Google reviews
- Not checked yet, not scored
How it scored
- BCA CW01 grade4 × 4
- Years trading5 × 2
- Other BCA workheads2 × 2
- Public record completeness3 × 1
Record checked 16 October 2026 · source
Hetat Pte. Ltd.
7.3/10Based in Tuas in the West region, Hetat has 23 years on ACRA's books (incorporated 2003). Its CW01 registration is grade B2 and it also carries 1 other BCA workhead. When we checked its website it described renovation, fit-out work.
- Registered address
- 19 Tuas Avenue 20, Singapore 638830
- UEN
- 200303795H
- Incorporated
- 2003 (23 yrs)
- BCA CW01
- Grade B2, valid to 1 July 2028
- Other BCA workheads
- CR06 L4
- HDB DRC listed
- No / not on record
- Office phone
- +65 6515 6116
- Website
- hetat.com
- Google reviews
- Not checked yet, not scored
How it scored
- BCA CW01 grade4 × 4
- Years trading5 × 2
- Other BCA workheads2 × 2
- Public record completeness3 × 1
Record checked 16 October 2026 · source
Perform Industries Pte. Ltd.
7.3/10Based in Ang Mo Kio in the North-East region, Perform Industries has 22 years on ACRA's books (incorporated 2004). Its CW01 registration is grade C1 and it also carries 3 other BCA workheads.
- Registered address
- 81 Tagore Lane #02-19 Tag A, Singapore 787502
- UEN
- 200409404C
- Incorporated
- 2004 (22 yrs)
- BCA CW01
- Grade C1, valid to 1 October 2027
- Other BCA workheads
- CR06 L5, ME01 L1, ME05 L2
- HDB DRC listed
- No / not on record
- Office phone
- +65 6282 3536
- Website
- performindustries.com
- Google reviews
- Not checked yet, not scored
How it scored
- BCA CW01 grade3 × 4
- Years trading5 × 2
- Other BCA workheads4 × 2
- Public record completeness3 × 1
Record checked 16 October 2026 · source
Everise Construction Pte. Ltd.
7.3/10Everise Construction was incorporated in 2015, so about 11 years ago, and its registered office is in Geylang in the Central region. BCA lists it under CW01 at grade C1 (valid to 1 March 2028), and it also holds CR06, CW02, ME01, ME05, ME12.
- Registered address
- 33 Ubi Avenue 3 #02-32 Vertex, Singapore 408868
- UEN
- 201541167W
- Incorporated
- 2015 (11 yrs)
- BCA CW01
- Grade C1, valid to 1 March 2028
- Other BCA workheads
- CW02 C3, CR06 L4, ME01 L1, ME05 L2, ME12 L1
- HDB DRC listed
- No / not on record
- Office phone
- +65 6282 3298
- Website
- everise.sg
- Google reviews
- Not checked yet, not scored
How it scored
- BCA CW01 grade3 × 4
- Years trading4 × 2
- Other BCA workheads5 × 2
- Public record completeness3 × 1
Record checked 16 October 2026 · source
Inn Interior Enterprise Pte Ltd
7.1/10Based in Clementi in the West region, Inn Interior Enterprise has 54 years on ACRA's books (incorporated 1972). Its CW01 registration is grade C1 and it also carries 2 other BCA workheads. It's on HDB's Directory of Renovation Contractors.
- Registered address
- 34 Toh Guan Road East #01-26 Enterprise Hub, Singapore 608579
- UEN
- 197200905E
- Incorporated
- 1972 (54 yrs)
- BCA CW01
- Grade C1, valid to 1 June 2027
- Other BCA workheads
- CR06 L3, CR09 L1
- HDB DRC listed
- Yes
- Office phone
- +65 6316 5471
- Website
- inninterior.com.sg
- Google reviews
- Not checked yet, not scored
How it scored
- BCA CW01 grade3 × 4
- Years trading5 × 2
- Other BCA workheads3 × 2
- Public record completeness4 × 1
Record checked 16 October 2026 · source
Before you hire
Get your QP or architect to confirm what approvals the works need before you collect quotes, it changes the price a lot. Ask each contractor whether they've handled A&A in the same type of building, an industrial unit isn't the same as a shophouse. And ask for their CW01 grade in writing, then check it on BCA's public directory.
Questions people ask
What's the difference between CW01 and CR06?
CW01 covers general building work, the structural side. CR06 covers interior decoration and finishing. A&A jobs often need both, and firms holding both tend to score higher here.
Do I always need approval for A&A works?
Not always, it depends what's being changed. Structural works and changes affecting fire safety normally do. Your QP is the right person to confirm that for your site.