SGDirectoryRanked trade guides

Renovation & building

20 Best Waterproofing Contractors in Singapore

Floor tiles being laid over a wet area
Floor tiles being laid over a wet area. Photo: Tony Esopi, CC BY-SA 3.0

Leaks from a bathroom or roof are the kind of problem that drags on, and in a flat they can turn into an argument with the neighbours fast. Good waterproofing is mostly invisible when it's done right, which is exactly why it's worth picking the contractor carefully.

The firms on this list hold BCA's waterproofing installation workhead, CR09. We ranked them on their CR09 grade, years since incorporation, how many other BCA registrations they hold and how complete their public record is. Most hold CR09 at L1, so the other criteria do alot of the sorting here.

How this list was ranked

Each firm gets 0 to 5 points on four things, multiplied by a weight: BCA CR09 (Waterproofing Installation) 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 33 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

Tell us the job and we'll pass it to firms that fit. No forms.

The ranking

1

Seng Foo Building Construction Pte. Ltd.

8.7/10

Based in Bukit Batok in the West region, Seng Foo Building Construction has 38 years on ACRA's books (incorporated 1988). Its CR09 registration is grade L4 and it also carries 4 other BCA workheads. 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 CR09
Grade L4, valid to 1 January 2027
Other BCA workheads
CW01 B1, CW02 C3, ME05 L1, ME06 L1
HDB DRC listed
No / not on record
Office phone
+65 6562 2235
Google reviews
Not checked yet, not scored

How it scored

  • BCA CR09 grade4 × 4
  • Years trading5 × 2
  • Other BCA workheads5 × 2
  • Public record completeness3 × 1

Record checked 16 October 2026 · source

2

Excell Enterprise Pte. Ltd.

6.9/10

Based in Yishun in the North region, Excell Enterprise has 3 years on ACRA's books (incorporated 2023). Its CR09 registration is grade L5 and it also carries 1 other BCA workhead. When we checked its website it described renovation, fit-out work.

Registered address
6 Yishun Industrial Street 1 #08-02 North View Bizhub, Singapore 768090
UEN
202314617Z
Incorporated
2023 (3 yrs)
BCA CR09
Grade L5, valid to 1 July 2027
Other BCA workheads
CW01 C3
HDB DRC listed
No / not on record
Office phone
Not available
Google reviews
Not checked yet, not scored

How it scored

  • BCA CR09 grade5 × 4
  • Years trading2 × 2
  • Other BCA workheads2 × 2
  • Public record completeness3 × 1

Record checked 16 October 2026 · source

3

Witflux Engineering Pte. Ltd.

6.9/10

On BCA's register it holds CR09 at grade L3 (valid to 1 May 2027). The company's been around since 2011 and is based in Yishun in the North region. Other workheads: CR06, CW01, 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 CR09
Grade L3, valid to 1 May 2027
Other BCA workheads
CW01 B2, CW02 C1, CR06 L2
HDB DRC listed
No / not on record
Office phone
+65 6262 3435
Google reviews
Not checked yet, not scored

How it scored

  • BCA CR09 grade3 × 4
  • Years trading4 × 2
  • Other BCA workheads4 × 2
  • Public record completeness3 × 1

Record checked 16 October 2026 · source

4

Ab Associates Pte. Ltd.

6.7/10

On BCA's register it holds CR09 at grade L3 (valid to 1 July 2027). The company's been around since 2013 and is based in Woodlands in the North region. Other workheads: CR06, CW01. When we checked its website it described renovation, fit-out work.

Registered address
31 Woodlands Close #03-05 Woodlands Horizon, Singapore 737855
UEN
201331123W
Incorporated
2013 (13 yrs)
BCA CR09
Grade L3, valid to 1 July 2027
Other BCA workheads
CW01 C3, CR06 L1
HDB DRC listed
No / not on record
Office phone
+65 6909 2427
Google reviews
Not checked yet, not scored

How it scored

  • BCA CR09 grade3 × 4
  • Years trading4 × 2
  • Other BCA workheads3 × 2
  • Public record completeness4 × 1

Record checked 16 October 2026 · source

5

Diamond Glass Enterprise Pte. Ltd.

6.2/10

Based in Bedok in the East region, Diamond Glass Enterprise has 20 years on ACRA's books (incorporated 2006). Its CR09 registration is grade L2 and it also carries 3 other BCA workheads. When we checked its website it described alteration, reinstatement work.

Registered address
7 Kaki Bukit Road 1 #B1-14 Eunos Technolink, Singapore 415937
UEN
200610366D
Incorporated
2006 (20 yrs)
BCA CR09
Grade L2, valid to 1 November 2028
Other BCA workheads
CW01 C3, CR01 Single Grade, CR06 L1
HDB DRC listed
No / not on record
Office phone
+65 6221 0704
Google reviews
Not checked yet, not scored

How it scored

  • BCA CR09 grade2 × 4
  • Years trading4 × 2
  • Other BCA workheads4 × 2
  • Public record completeness4 × 1

Record checked 16 October 2026 · source

6

Mutiara (FE) Pte. Ltd.

6.0/10

Based in Tuas in the West region, Mutiara (FE) has 22 years on ACRA's books (incorporated 2004). Its CR09 registration is grade L1 and it also carries 4 other BCA workheads.

Registered address
17B Tuas Road, Singapore 637815
UEN
200406336W
Incorporated
2004 (22 yrs)
BCA CR09
Grade L1, valid to 1 January 2028
Other BCA workheads
CW01 C1, CW02 C3, CR06 L4, ME06 L1
HDB DRC listed
No / not on record
Office phone
+65 6462 3393
Google reviews
Not checked yet, not scored

How it scored

  • BCA CR09 grade1 × 4
  • Years trading5 × 2
  • Other BCA workheads5 × 2
  • Public record completeness3 × 1

Record checked 16 October 2026 · source

8

Envirotec Controls (Asia Pacific) Pte. Ltd.

5.8/10

On BCA's register it holds CR09 at grade L1 (valid to 1 January 2027). The company's been around since 2009 and is based in Serangoon in the North-East region. Other workheads: CR01, ME01, ME05, ME06, ME09. When we checked its website it described air-conditioning, renovation, fit-out work.

Registered address
50 Serangoon North Avenue 4 #07-14 First Centre, Singapore 555856
UEN
200919625D
Incorporated
2009 (17 yrs)
BCA CR09
Grade L1, valid to 1 January 2027
Other BCA workheads
CR01 Single Grade, ME01 L1, ME05 L1, ME06 L1, ME09 L1
HDB DRC listed
No / not on record
Office phone
+65 6570 0501
Google reviews
Not checked yet, not scored

How it scored

  • BCA CR09 grade1 × 4
  • Years trading4 × 2
  • Other BCA workheads5 × 2
  • Public record completeness4 × 1

Record checked 16 October 2026 · source

9

Buildfolio Global Pte. Ltd.

5.3/10

Based in Woodlands in the North region, Buildfolio Global has 10 years on ACRA's books (incorporated 2016). Its CR09 registration is grade L2 and it also carries 2 other BCA workheads.

Registered address
31 Woodlands Close #04-12 Woodlands Horizon, Singapore 737855
UEN
201606660G
Incorporated
2016 (10 yrs)
BCA CR09
Grade L2, valid to 1 June 2028
Other BCA workheads
CW01 C2, CR06 L2
HDB DRC listed
Yes
Office phone
+65 6560 0019
Google reviews
Not checked yet, not scored

How it scored

  • BCA CR09 grade2 × 4
  • Years trading3 × 2
  • Other BCA workheads3 × 2
  • Public record completeness4 × 1

Record checked 16 October 2026 · source

10

Inn Interior Enterprise Pte Ltd

5.3/10

On BCA's register it holds CR09 at grade L1 (valid to 1 June 2027). The company's been around since 1972 and is based in Clementi in the West region. Other workheads: CR06, CW01.

Registered address
34 Toh Guan Road East #01-26 Enterprise Hub, Singapore 608579
UEN
197200905E
Incorporated
1972 (54 yrs)
BCA CR09
Grade L1, valid to 1 June 2027
Other BCA workheads
CW01 C1, CR06 L3
HDB DRC listed
Yes
Office phone
+65 6316 5471
Google reviews
Not checked yet, not scored

How it scored

  • BCA CR09 grade1 × 4
  • Years trading5 × 2
  • Other BCA workheads3 × 2
  • Public record completeness4 × 1

Record checked 16 October 2026 · source

11

Fibrwrap Construction Pte. Ltd.

5.3/10

Fibrwrap Construction was incorporated in 2002, so about 24 years ago, and its registered office is in Bukit Merah in the Central region. BCA lists it under CR09 at grade L1 (valid to 1 January 2027), and it also holds CW01, CW02. When we checked its website it described renovation, fit-out work.

Registered address
1 Jalan Kilang Timor #04-06 Pacific Tech Centre, Singapore 159303
UEN
200203354E
Incorporated
2002 (24 yrs)
BCA CR09
Grade L1, valid to 1 January 2027
Other BCA workheads
CW01 C2, CW02 C3
HDB DRC listed
No / not on record
Office phone
+65 6898 5248
Google reviews
Not checked yet, not scored

How it scored

  • BCA CR09 grade1 × 4
  • Years trading5 × 2
  • Other BCA workheads3 × 2
  • Public record completeness4 × 1

Record checked 16 October 2026 · source

12

Lee Hong Lee Construction Pte. Ltd.

5.3/10

Based in Sungei Kadut in the North region, Lee Hong Lee Construction has 24 years on ACRA's books (incorporated 2002). Its CR09 registration is grade L1 and it also carries 2 other BCA workheads. When we checked its website it described renovation, fit-out work.

Registered address
6D Mandai Estate #09-12 M-Space, Singapore 729938
UEN
200202635W
Incorporated
2002 (24 yrs)
BCA CR09
Grade L1, valid to 1 May 2028
Other BCA workheads
CW01 C3, CR06 L1
HDB DRC listed
Yes
Office phone
+65 6292 3158
Google reviews
Not checked yet, not scored

How it scored

  • BCA CR09 grade1 × 4
  • Years trading5 × 2
  • Other BCA workheads3 × 2
  • Public record completeness4 × 1

Record checked 16 October 2026 · source

13

I Design & Build Pte. Ltd.

5.3/10

On BCA's register it holds CR09 at grade L1 (valid to 1 June 2027). The company's been around since 2004 and is based in Tampines in the East region. Other workheads: CR06, CW01.

Registered address
12 Changi South Street 1, Singapore 486786
UEN
200404950M
Incorporated
2004 (22 yrs)
BCA CR09
Grade L1, valid to 1 June 2027
Other BCA workheads
CW01 C3, CR06 L4
HDB DRC listed
Yes
Office phone
+65 6259 1567
Google reviews
Not checked yet, not scored

How it scored

  • BCA CR09 grade1 × 4
  • Years trading5 × 2
  • Other BCA workheads3 × 2
  • Public record completeness4 × 1

Record checked 16 October 2026 · source

14

Alliancz International Pte. Ltd.

5.3/10

Alliancz International was incorporated in 2006, so about 20 years ago, and its registered office is in Geylang in the Central region. BCA lists it under CR09 at grade L1 (valid to 1 February 2027), and it also holds CR01, CR06, CW01. When we checked its website it described renovation, fit-out work.

Registered address
40 Ubi Crescent #01-02 Ubi Techpark, Singapore 408567
UEN
200616212Z
Incorporated
2006 (20 yrs)
BCA CR09
Grade L1, valid to 1 February 2027
Other BCA workheads
CW01 C1, CR01 Single Grade, CR06 L1
HDB DRC listed
No / not on record
Office phone
+65 6743 3313
Google reviews
Not checked yet, not scored

How it scored

  • BCA CR09 grade1 × 4
  • Years trading4 × 2
  • Other BCA workheads4 × 2
  • Public record completeness4 × 1

Record checked 16 October 2026 · source

15

Skyler Construction Pte. Ltd.

5.3/10

Based in Geylang in the Central region, Skyler Construction has 11 years on ACRA's books (incorporated 2015). Its CR09 registration is grade L1 and it also carries 3 other BCA workheads. When we checked its website it described electrical, renovation, fit-out work.

Registered address
2 Kallang Pudding Road #09-13 Mactech Building, Singapore 349307
UEN
201537231H
Incorporated
2015 (11 yrs)
BCA CR09
Grade L1, valid to 1 December 2027
Other BCA workheads
CW01 C3, CR06 L1, ME05 L1
HDB DRC listed
Yes
Office phone
Not available
Google reviews
Not checked yet, not scored

How it scored

  • BCA CR09 grade1 × 4
  • Years trading4 × 2
  • Other BCA workheads4 × 2
  • Public record completeness4 × 1

Record checked 16 October 2026 · source

16

Galaxy Studio Interior Pte. Ltd.

5.3/10

Galaxy Studio Interior was incorporated in 2018, so about 8 years ago, and its registered office is in Woodlands in the North region. BCA lists it under CR09 at grade L1 (valid to 1 July 2028), and it also holds CR06, CW01, ME01, ME05.

Registered address
69 Woodlands Industrial Park E2 Nordix, Singapore 757481
UEN
201842359D
Incorporated
2018 (8 yrs)
BCA CR09
Grade L1, valid to 1 July 2028
Other BCA workheads
CW01 C3, CR06 L4, ME01 L1, ME05 L1
HDB DRC listed
Yes
Office phone
+65 6970 5988
Google reviews
Not checked yet, not scored

How it scored

  • BCA CR09 grade1 × 4
  • Years trading3 × 2
  • Other BCA workheads5 × 2
  • Public record completeness4 × 1

Record checked 16 October 2026 · source

17

Wsh Experts Pte. Ltd.

5.3/10

On BCA's register it holds CR09 at grade L1 (valid to 1 July 2027). The company's been around since 2018 and is based in Kallang in the Central region. Other workheads: CR01, CR06, CW01, CW02, ME01 and more. When we checked its website it described electrical, renovation, fit-out work.

Registered address
80 Bendemeer Rd #07-05, Singapore 339949
UEN
201805323R
Incorporated
2018 (8 yrs)
BCA CR09
Grade L1, valid to 1 July 2027
Other BCA workheads
CW01 C3, CW02 C3, CR01 Single Grade, CR06 L1, ME01 L1, ME05 L1, ME06 L1
HDB DRC listed
No / not on record
Office phone
+65 6909 1434
Google reviews
Not checked yet, not scored

How it scored

  • BCA CR09 grade1 × 4
  • Years trading3 × 2
  • Other BCA workheads5 × 2
  • Public record completeness4 × 1

Record checked 16 October 2026 · source

18

Acolite Construction (S) Pte. Ltd.

5.1/10

On BCA's register it holds CR09 at grade L1 (valid to 1 December 2026). The company's been around since 1984 and is based in Geylang in the Central region. Other workheads: CR06, CW01. When we checked its website it described renovation, fit-out work.

Registered address
37 Lorong 23 Geylang #05-03 Yu Li Industrial Building, Singapore 388371
UEN
198401013N
Incorporated
1984 (42 yrs)
BCA CR09
Grade L1, valid to 1 December 2026
Other BCA workheads
CW01 C3, CR06 L1
HDB DRC listed
No / not on record
Office phone
+65 6747 2322
Google reviews
Not checked yet, not scored

How it scored

  • BCA CR09 grade1 × 4
  • Years trading5 × 2
  • Other BCA workheads3 × 2
  • Public record completeness3 × 1

Record checked 16 October 2026 · source

19

Dezign Format Pte Ltd

5.1/10

Based in Sembawang in the North region, Dezign Format has 34 years on ACRA's books (incorporated 1992). Its CR09 registration is grade L1 and it also carries 2 other BCA workheads.

Registered address
2 Woodlands Sector 1 #03-21 Woodlands Spectrum, Singapore 738068
UEN
199203233Z
Incorporated
1992 (34 yrs)
BCA CR09
Grade L1, valid to 1 July 2027
Other BCA workheads
CW01 C2, CR06 L3
HDB DRC listed
No / not on record
Office phone
+65 6756 2928
Google reviews
Not checked yet, not scored

How it scored

  • BCA CR09 grade1 × 4
  • Years trading5 × 2
  • Other BCA workheads3 × 2
  • Public record completeness3 × 1

Record checked 16 October 2026 · source

20

Regius Construction & Civil Engineering Pte. Ltd.

5.1/10

Regius Construction & Civil Engineering was incorporated in 2003, so about 23 years ago, and its registered office is in Serangoon in the North-East region. BCA lists it under CR09 at grade L1 (valid to 1 August 2027), and it also holds CR06, CW01. When we checked its website it described renovation, fit-out work.

Registered address
5004 Ang Mo Kio Avenue 5 #04-02 Techplace Ii, Singapore 569872
UEN
200311929W
Incorporated
2003 (23 yrs)
BCA CR09
Grade L1, valid to 1 August 2027
Other BCA workheads
CW01 C3, CR06 L3
HDB DRC listed
No / not on record
Office phone
+65 6484 2209
Google reviews
Not checked yet, not scored

How it scored

  • BCA CR09 grade1 × 4
  • Years trading5 × 2
  • Other BCA workheads3 × 2
  • Public record completeness3 × 1

Record checked 16 October 2026 · source

Before you hire

Ask what system they'll use and whether they'll do a ponding test before tiling over it. Ask for the warranty terms in writing and what's excluded. If the leak is coming from a unit above you, sort out who's responsible with your neighbour or MCST first, it saves arguments later.

Questions people ask

What is CR09?

It's BCA's registration workhead for waterproofing installation. Grades go from L1 to L6 depending on the size of contracts the firm is cleared for.

Can my renovation contractor do the waterproofing?

Many can, and several firms here are also general renovation contractors. For roofs or a persistent leak a CR09 registered firm is a sensible choice.