Government officials will NEVER ask you to transfer money or disclose bank log-in details over a phone call.
Call the 24/7 ScamShield Helpline at 1799 or visit www.scamshield.gov.sg to check if something is a scam.
sg-crest
A Singapore Government Agency Website
How to identify
Official website links end with .gov.sg
Secure websites use HTTPS
Look for a lock () or https:// as an added precaution. Share sensitive information only on official, secure websites.
Last Updated: 05 April 2026

Company Information

 

QUADUNION BUILDERS PTE. LTD.

UEN: 198202066Z
21 TUAS AVENUE 11 SINGAPORE 639085
62599330
62599662

Tendering Limit

Find out more about the tendering limits

Check

Registered Contractors

Workhead Description Grade Expiry Date
CR01
Minor Construction Works
 Minor Construction Works Single Grade 31/12/2028
CR03
Demolition
 Demolition Single Grade 01/01/2027
CR14
Asphalt Works & Road Marking
 Asphalt Works & Road Marking L1 31/12/2028
CR16
Curtain Walls
 Curtain Walls L1 31/12/2028
CW01
General Building
 General Building B1 01/01/2027
TR01
Formwork
 Formwork Single Grade 31/12/2028
TR02
Steel Reinforcement Work
 Steel Reinforcement Work Single Grade 31/12/2028
TR03
Concreting Work
 Concreting Work Single Grade 31/12/2028
TR04
Drywall Installation
 Drywall Installation Single Grade 31/12/2028
TR06
Ceiling Work
 Ceiling Work Single Grade 31/12/2028

Licensed Builders

Licensing Code Description Expiry Date
SB(SS)
Specialist Builder (Structural Steelwork)
 Specialist Builder (Structural Steelwork) 07/03/2027
GB1
General Builder Class 1
 General Builder Class 1 16/06/2027