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BCA Registered ME12 · Est. 2005 · Singapore

Singapore's trusted
MEP specialist
contractor

Design and construction of plumbing & sanitary and automatic irrigation & rainwater harvesting systems — for Singapore's most demanding projects.

✓ bizSAFE Level 4
✓ BCA ME12 Registered Contractor
✓ PUB and Authority Compliant
20+
Years in operation
13
Completed P&S projects (last 5 years)
20+
Completed irrigation projects (last 5 years)
50+
Active projects
Our Services
Two disciplines.
Full-scope delivery.

Compliant design and construction from schematics to handover, working alongside Singapore's leading main contractors.

01 — Plumbing & Sanitary

Plumbing, Sanitary & Gas Works

Full design and construction of plumbing, sanitary drainage, and gas systems for industrial, commercial, and residential buildings. Compliant with Singapore's Code of Practice, PUB requirements, and SCDF standards.

Domestic water supply Sanitary drainage Gas piping Fire hydrant systems Rainwater downpipes
02 — Irrigation & RWH

Automatic Irrigation & Rainwater Harvesting

Comprehensive design and construction of automatic irrigation and rainwater harvesting systems across the full spectrum of building types — from large-scale MRT depots and transport infrastructure, to HDB residential developments, commercial buildings, institutional facilities, and civil infrastructure including flyovers and bridges.

Smart irrigation systems Rainwater harvesting Drip & spray systems MRT depot irrigation Bridge & viaduct
Selected Work
Projects that define
our track record
5-Storey Single User Ramp-Up Warehouse at 4 Benoi Crescent
Plumbing & Sanitary

5-Storey Single User Ramp-Up Warehouse at 4 Benoi Crescent

POKKA
Completed 2024
Pearl Bank — 2 Blocks 40-Storey Residential with Basement Car Parks & Pool
Irrigation + RWH

Pearl Bank — 2 Blocks 40-Storey Residential with Basement Car Parks & Pool

Areca Investment Pte Ltd
Completed 2022
8-Storey Hi-Tech Industrial Building at 7000 Ang Mo Kio Avenue 5
Plumbing & Sanitary

8-Storey Hi-Tech Industrial Building at 7000 Ang Mo Kio Avenue 5

7000 AMK LLP
Completed 2023
A&A to Casino Zone E&F, Resorts World Sentosa
P&S + Gas

A&A to Casino Zone E&F, Resorts World Sentosa

Resort World at Sentosa Pte Ltd
Completed 2024
63-Storey Mixed-Use Tower at 8 Shenton Way
Irrigation

63-Storey Mixed-Use Tower at 8 Shenton Way

Perennial Shenton Property Pte Ltd
2025 – Present
New Primary School at Tengah Garden Avenue
Irrigation + RWH

New Primary School at Tengah Garden Avenue

Ministry of Education
2024 – Present
Clients & owners we have worked with
Housing & Development Board
Land Transport Authority
Singapore Land Authority
Defence Science & Technology Agency
PUB
JTC Corporation
Changi Airport Group
Ministry of Education
GuocoLand
Perennial Holdings
Boustead Trustees
Resorts World Sentosa
City Development Limited
F&N Foods
Get in touch

Have a question about our work?

Speak to our team about your plumbing & sanitary, irrigation or rainwater harvesting project - we respond quickly.

Or WhatsApp wa.link/7jn2iu · email info@koonsengps.com

About us

Professional.
Specialist.
Proven.

Koon Seng Engineering & Construction Pte Ltd is a BCA-registered ME12 sub-contractor, established in 2005 and operating across Singapore's most demanding public and private sector projects.

Our story

Founded in 2005, Koon Seng began as a plumbing and sanitary specialist serving Singapore's growing industrial and residential sectors. Over the years, we expanded our scope to include automatic irrigation and rainwater harvesting — building deep technical expertise in both disciplines.

Under current leadership since 2018, the company operates as a professionally managed operation with a lean, experienced team focused on quality, compliance, and delivery. We take pride in the trust that Singapore's leading government agencies and private developers have placed in us.

Today we work alongside Singapore's top main contractors on projects ranging from HDB new towns and MRT infrastructure to high-rise mixed-use towers and defence facilities.

01

Certified & Compliant

BCA ME12 registered. Professional Engineers and Licensed Plumbers on team. Every installation meets PUB, SCDF, and all relevant authority requirements.

02

Proven Track Record

Trusted by HDB, LTA, SLA, DSTA, PUB, JTC, MOE, Changi Airport Group, GuocoLand, Perennial, and many more leading clients.

03

Reliable Partner

We coordinate effectively with architects, consultants, and main contractors to ensure smooth and on-time project delivery.

04

Sustainability Focus

Specialists in rainwater harvesting and smart irrigation, helping Singapore's built environment meet PUB water efficiency targets.

Accreditations
Recognised & certified
🏗
BCA Registered Contractor
ME12 — Mechanical & Electrical Works
🛡
bizSAFE Level 4
Workplace safety & health certified
🔧
PUB Licensed Plumbers
All installations PUB-code compliant
👷
Professional Engineers
PE-endorsed designs for all major works
Track Record

Project references

Ongoing and completed works across plumbing & sanitary and irrigation & rainwater harvesting. Updated June 2026.

Irrigation & RWH

Ongoing Projects

ProjectScopeOwnerYear
30-Storey MOE Extension - Office & 3 Basements, North Buona Vista DriveIrrigationMinistry of Education2026 – Present
Chong Pang Integrated Development - Community Club, Market & Hawker Centre, 102 Yishun Ave 5IRR + RWHSingapore Land Authority2024 – Present
A&A to 7-Storey Building & Ancillary Works at Gombak DriveIrrigationDSTA2025 – Present
Development of Buildings & Infrastructure at Amoy QueeIRR + RWHDSTA2025 – Present
Tampines N2 C24 (Project FG) - 284 UnitsIrrigationHousing & Development Board2026 – Present
Woodlands N9 C9 - 835 UnitsIrrigationHousing & Development Board2026 – Present
Project DN - 1,052 UnitsIRR + RWHHousing & Development Board2026 – Present
Redhill Close - 1,021 Units (40 & 49-Storey)IRR + RWHHousing & Development Board2026 – Present
Project EP - 638 Units (36 & 37-Storey)IrrigationHousing & Development Board2026 – Present
Punggol West C41 - 1,026 Units, Sumang LaneIRR + RWHHousing & Development Board2025 – Present
Sengkang N4 C45 (Project BB) - 897 Units, Fernvale StreetIRR + RWHHousing & Development Board2024 – Present
Toa Payoh Rise / Braddell Rise (Project AO) - 741 UnitsIrrigationHousing & Development Board2024 – Present
Jurong East N2 C24 - 562 UnitsIrrigationHousing & Development Board2024 – Present
Woodlands N1 C31 - 399 Units, Woodlands Street 13IrrigationHousing & Development Board2024 – Present
Kallang Whampoa C72 - 1,040 Units, Jalan TenteramIRR + RWHHousing & Development Board2024 – Present
Queenstown Tanglin Halt C2 - 251 Units + Hawker Centre & PolyclinicIrrigationHousing & Development Board2024 – Present
Project BW - 1,138 UnitsIrrigationHousing & Development Board2025 – Present
BMC72 (Project CE) - 609 Units, Tanglin RoadIrrigationHousing & Development Board2026 – Present
Upper Thomson Road (Parcel B) - 909 + 32 UnitsIRR + RWHGuocoLand / Springleaf2025 – Present
63-Storey Tower at 8 Shenton Way - Office, Hotel & 215 Residential UnitsIrrigationPerennial Shenton Property2025 – Present
5-Storey Assisted Living & Geriatric Care Home, Parry AvenueIRR + RWHPerennial (Parry) AL Care2024 – Present
NSRCC Resort Development at Changi Coast WalkIRR + RWHNational Service Resort & Country Club2025 – Present
Contract J101 - Tengah Depot, Jurong Region LineIRR + RWHLand Transport Authority2022 – Present
2-Storey Detached House with Basements & Pool, 2 Astrid HillIRR + RWHPrivate2025 – Present
Irrigation & RWH

Completed Projects

ProjectScopeOwnerYear
5-Storey Polyclinic & Senior Care Centre, Chin Cheng AvenueIrrigationMinistry of Health2019 – 2022
New Primary School at Tengah Garden AvenueIRR + RWHMinistry of Education2024 – 2026
New Primary School at Tampines Street 61IrrigationMinistry of Education2020 – 2021
Dawson Contract 4 - 6 Residential Blocks, Margaret DriveIrrigationHousing & Development Board2018 – 2022
Tampines Street 62 - 4 Blocks 15-Storey ResidentialIrrigationHousing & Development Board2021 – 2022
Tampines N6 C13-14 - Residential Development, Tampines North Drive 2IRR + RWHHousing & Development Board2022 – 2023
Multi-User Industrial Development at Bulim DriveIrrigationJTC Corporation2022 – 2025
Extension of Air Traffic Control Centre, Sealand RoadIRR + RWHCivil Aviation Authority of Singapore2023 – 2025
3-Storey Tennis Facility at Stadium Walk, KallangIrrigationSport Singapore2022 – 2023
4-Storey Single User Warehouse at Greenwich DriveIrrigationSchenker Singapore2023 – 2025
Contract 882 - Keppel Station & Tunnels, Circle Line 6IrrigationLand Transport Authority2024 – 2026
5-Storey Ramp-Up Warehouse at 36 Tuas RoadIrrigationBoustead Trustees2023 – 2025
2 Blocks 40-Storey Residential with Pool, Pearl BankIRR + RWHAreca Investment2022 – 2024
4-Storey Ramp-Up Warehouse Extension, 28 Tuas Avenue 13IrrigationYCH Districentre2024
NS Hub - 6-Storey Office Block & Amenities, Hillview AvenueRWHDSTA2022 – 2024
Irrigation Retrofit - Childcare Centre, Punggol PlaceIrrigationNTUC First Campus2023
5/6-Storey Civic & Community Development, Punggol DriveIRR + RWHPeople's Association2019 – 2022
5-Storey Bus Depot & 8-Storey Worker Dormitory, Sengkang West AvenueIrrigationLand Transport Authority2022 – 2024
5-Storey Bus Depot & Worker Dormitory, Jalan Gali BatuIRR + RWHLand Transport Authority2022 – 2024
9-Storey Light Industrial Development, Woodlands Avenue 9IRR + RWHJTC Corporation2015 – 2022
NUS Wet Science Building, 21 Lower Kent Ridge RoadIrrigationNational University of Singapore2019 – 2020
Gardens by the Bay MRT StationIrrigationLand Transport Authority2019 – 2022
Napier MRT StationIrrigationLand Transport Authority2019 – 2022
Additional Stabling Yard & Bus Terminal, Gali Batu DepotIrrigationLand Transport Authority2017 – 2018
RD300 Ulu Pandan Bus DepotIrrigationLand Transport Authority2017 – 2018
RD299 Sungei Seletar Bus DepotIrrigationLand Transport Authority2017 – 2018
Sentul Crescent Extension & Bridge over Punggol WaterwayIRR + RW DownpipeHousing & Development Board2021 – 2022
Aircraft Hangar & Workshops, Nicoll DriveRWHChangi Airport Group2025 – 2026
Flyover, Drains & Sewers - North Buona Vista to Commonwealth AveIRR + RW DownpipeJTC Corporation2018 – 2021
1-Storey Detached House, Matlock RiseRWHPrivate2024
5-Storey Factory with 2 Basements, Bulim WalkIrrigationPrivate2019 – 2022
Twin Vew CondominiumIrrigationCSC Land Group2019 – 2021
Segar Gardens Childcare CentreIrrigationMy First Skool2019 – 2020
St Andrew's CathedralIrrigationThe Diocese of Singapore2020
21 Meyappa Chettiar Road CondominiumIrrigationOxley Holdings2019 – 2020
Ridout Road ResidenceIrrigationPrivate2019
Concorde HotelIrrigationHPL Hotels & Resorts2019
28 Henderson Road OfficeIrrigationPrivate2019
Jurong Lake West DevelopmentIrrigationNational Parks2017 – 2018
Ang Mo Kio MRT Station - NParks N-86IrrigationSMRT & National Parks2017 – 2018
Green Walls @ Changi Airport Terminal 4IrrigationChangi Airport Group2015 – 2017
Roof Retrofitting @ Bukit Panjang Government High SchoolIrrigationMinistry of Education2016
Yishun Large Childcare Centre (YLCC)IrrigationSchool4Kidz2016
Green Walls @ Bank of Tokyo, Marina OneIrrigationPrivate2016
Plumbing & Sanitary

Ongoing Projects

ProjectScopeOwnerYear
7-Storey FAB Production Building & Central Utility Plant, 1 North Coast DriveP&SMicron2026 – Present
10-Storey Multi-User Factory (283 Units), 23 Lok Yang WayP&S + Fire HydrantSB (LYW) Investment2025 – Present
10-Storey Multi-User Factory (239 Units), Tampines North Drive 4P&S + Fire HydrantSB (TND) Investment2024 – Present
A&A to Swissotel Merchant Court Hotel, 20 Merchant RoadP&SMerchant Court2025 – Present
A&A to 2-Storey Industrial Development, 25 Tuas Avenue 4P&SWEVO Operations APAC2025 – Present
Plumbing & Sanitary

Completed Projects

ProjectScopeOwnerYear
2-Storey Terrace Factory, 24 Woodlands TerraceP&SLG Bean Manufacturer2024 – 2025
5-Storey Ramp-Up Warehouse, 36 Tuas RoadP&S + Fire HydrantBoustead Trustees2023 – 2024
5-Storey Ramp-Up Warehouse, 4 Benoi CrescentP&S + Fire HydrantPOKKA2022 – 2024
8-Storey Hi-Tech Industrial Building, 7000 Ang Mo Kio Avenue 5P&S7000 AMK LLP2021 – 2023
9-Storey Factory & Distribution Complex, Tuas Link 2/3/4P&S + Fire HydrantF&N Foods2020 – 2022
6-Storey Single-User Warehouse, 2 Tanjong Penjuru CrescentP&SLOGOS2020 – 2021
Parkway Parade Asset Enhancement InitiativeP&SPrime Asset Holdings2025 – 2026
Tengah Service Reservoir & Control Building, Bukit Batok RoadP&SPUB2023 – 2026
A&A to 4-Storey Scarlet Hotel, 33 Erskine RoadP&SThe Scarlet Hotel2025
Pulau Punggol Barat C4 - Pumping Station, Seletar North LinkP&S + RW DownpipePUB2022 – 2025
A&A to 12-Storey Service Apartments, 8 Wilkie RoadP&SHillside (Singapore)2024
A&A to Casino Zone E&F, Resorts World SentosaP&S + GasResorts World Sentosa2024
Single-Storey F&B Establishment & Pavilions, West Coast Ferry RoadP&SCitysprouts2024
New Futura - High-End Condominium, Leonie Hill RoadP&S + RWHCity Developments Limited2014 – 2017
3-Storey Factory with Mezzanine, 17 Tuas Avenue 11P&S + RW DownpipeNeo Hardware2022 – 2023
5-Storey Commercial Building, 1353-1355 Serangoon RoadP&S + Fire HydrantRibar Industries2022 – 2024
6-Storey Flatted Factory, Serangoon North Avenue 5P&SJTC Corporation2022 – 2023
Domestic Water & Sanitary Upgrade, Tanglin Halt Blk 115AP&SMapletree Industrial Trust2022 – 2023
3-Storey Factory Warehouse & Dormitory, ChangiP&S + Fire HydrantPrivate2020 – 2021
3-Storey Semi-Detached Houses, Ang Mo KioP&SPrivate2020 – 2021
3-Storey Terrace House, Jurong WestP&SPrivate2019 – 2020
2-Storey Terrace Houses, GeylangP&SPrivate2019 – 2020
3-Storey Semi-Detached Houses with Pool, SerangoonP&SPrivate2018
A&A 4-Storey Industrial Development, SenokoP&SPrivate2020
Corals @ Keppel Bay - High-End CondominiumP&S + RWHKeppel Land2016
WESTCOM B2 Factory & WarehouseP&S + RWHFar East Organization2014 – 2015
Ng Teng Fong General HospitalP&S + RWHMinistry of Health2014 – 2015
EU Habitat Mixed DevelopmentP&S + RWHFar East Organization2013 – 2015
Marina Bay Sands Integrated ResortP&S + RWHLas Vegas Sands2009 – 2011
Festive Hotel & Forum, Resorts World SentosaP&S + RWHGenting Group2008 – 2009
Contact

Let's work
together

Looking for a reliable MEP sub-contractor? We'd like to hear about your project scope and timeline.

Office
#03-46, 7 Soon Lee Street
iSpace, Singapore 627608
Email
info@koonsengps.com
WhatsApp
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