Welcome to Koon Seng Construction.

As a long established construction company in Singapore, we are proud to be the builder of some well known iconic buildings here, such as  Raffles Girls School, Singapore Islamic Hub, Telok Ayer Chinese Methodist Church, St. Luke's Hospital and Immigration and Checkpoint Authority Building, to mention only a few projects.

Capitalizing on our long history, our long-service and dedicated staff and our policy of continual upgrading, we build continuously on accumulated knowledge, experience and expertise.  Our Clients and Project Consultants often value our input and recommendations in design detailing, as well as our focus on safety, quality and timely completion of all our projects.

ICA Building

In line with the evolving environment in the construction industry, we have embraced modern technology, adopted the use of labour saving equipment and Information Technology and developed comprehensive operational procedures and processes. 

The enhanced productivity, quality of works, high safety standards result in timely completion in every project we undertake, and are reflected in our Customer reviews and  CONQUAS scores achieved.


As a contribution to the industry, we utilise our building skills to train and test workers  in selected trades as an Accredited Training and Testing Centre  with the Building and Construction Authority.

Featured Projects

The following projects over recent years are featured as testament to the consistent high quality and on time project delivery by Koon Seng Construction leading to high levels of customer satisfaction.

  • NUH Utilities<br> Building
    NUH Utilities
    Completed 2017.
    Project Value: $72.9mil
  • HDB <br>Sembawang <br>N1C8
    Completed 2017.
    Project Value: $66.7 mil.
  • HDB <br>Clementi N2C2
    Clementi N2C2
    Completed 2017.
    Project Value: $50.7 mil
  • HDB<br> Sembawang <br>N1C7
    Completed 2017.
    Project Value: $119.0 mil.
  • Dulwich College <br> (Phase 2)
    Dulwich College
    (Phase 2)
    Completed 2016.
    Project Value: $82.7 mil.
  • Temasek <br>Polytechnic<br> East Wing
    East Wing
    Completed 2015.
    Project Value: $67.8 mil
  • Singapore <br> Institute of Technology at <br> Dover Road
    Institute of Technology at
    Dover Road
    Completed 2014.
    Project Value: $78.4 mil.
  • Dorsett Hotel <br>and Residences
    Dorsett Hotel
    and Residences
    Completed 2013.
    Project Value: $62.0 mil.
  • Victoria <br>Wholesale <br> Centre
    Completed 2011.
    Project Value: 24.5 mil
  • NUH <br> Administration <br> Building
    Completed 2010.
    Project Value: $78.4 mil.

Project Portfolio

Koon Seng Construction began its business by building residential projects before expanding to building schools and institutions of higher learning in the 1980s. Since then, it has enlarged its portfolio to include commercial, industrial, medical, religious institutions, retrofitting and conservation building projects. The company’s construction management expertise has also evolved in tandem to include design-and-build projects.


Schools and Institutions of Higher Learning:

  • Dulwich College (Phase 2) at Bukit Batok West
  • New Teaching Facilities Building at Temasek Polytechnic
  • Singapore Institute of Technology & Student Sports Hub at Singapore Polytechnic
  • Singapore Management University Administration Building
  • Singapore Institute of Management Open University
  • Institute of Microelectronics and Information Technology
  • Raffles Girls’ School at Anderson Road
  • Methodist Girls’ School at Blackmore Drive
  • St Joseph’s Institution at Malcolm Road


Commercial and Industrial Projects:          

  • Victoria Wholesale Centre at Kallang Avenue
  • SAFRA Club at Jurong West
  • Invensys Building at Changi Business Park
  • Immigration and Checkpoints Authority Building
  • SIA Supplies Centre at Loyang Way
  • Marina Square Extension
  • Techplace 1 Extension at Ang Mo Kio Industrial Park 1


Religious Institutions

  • Singapore Islamic Hub at 273 Braddell Road
  • 3-Storey Church with Basement at 4 How Sun Drive
  • 3-Storey Church with 3 Basements at 61 Wishart Road
  • 3-Storey Church with 3 Basements at 34 Serangoon Garden Way


Medical Facilities Projects:    

  • National University Hospital Utilities/Services Building
  • 13-Storey National University Hospital Administrative Building
  • Clinical Research Centre at Kent Ridge Crescent
  • St Luke’s Hospital at Bukit Batok


Retrofitting and Conservation Building Projects:

  • Reconstruction of Singapore Repertory Theatre Development
  • Singapore Management University’s Student Hostel at Prinsep Street


Residential Projects:             

  • HDB Building Works at Sembawang N1 C7 & C8
  • HDB Building Works at Clementi N2 C2
  • Dorsett Hotel and Residences at New Bridge Road
  • HDB Rental Flats Upgrading Projects – Contract 1 & 2
  • HDB Building Works for Lift Upgrading Programme – LUP Bulk Contract 8
  • HDB Upgrading Works at Kallang Basin N3 C11
  • 110 Housing Units at Thomson Hill Estate


Design-and-Build Projects:     

  • Design and Build of Madrasah Al Maarif Islamic School
  • Design and Development of Junyuan Secondary School