The Independent
Benchmark
for Asia.
Founded by Singapore quality experts, we provide objective, data-driven construction workmanship assessments across Asia — bridging the gap between what is designed and what is built.
ISO 9001:2015 Certified
Our Mission
“To make construction quality visible, measurable, and improvable.”
BuildQAS was established because quality in construction was being measured inconsistently — or not at all. Developers couldn't reliably compare projects, contractors had no objective feedback, and end-users bore the cost of invisible defects.
We built a rigorous, repeatable system — adapted from Singapore's CONQUAS and Malaysia's QLASSIC — and brought it to developers and contractors across Asia as an independent assessment partner.
Today, every BuildQAS score is backed by documented evidence, photographic records, and a transparent methodology that any stakeholder can scrutinise.
Field Testing
Window Water Tightness Assessment
Highest Score
How It Works
The Assessment Process
Scoping
We agree on the units, areas, and functional tests to be included, calibrated to your project type and size.
Assessment
Our assessors inspect finished works at completion — internal finishes, roofing, water ponding, facade, and window water-tightness.
Scoring
Each element is scored against the BuildQAS benchmark. The final score is an objective, weighted aggregate.
Reporting
You receive a full report with itemised scores, photographic evidence, and benchmarking context against assessed peers.
What Drives Us
Our Principles
Independence
We are not affiliated with any contractor, developer, or government body. Our scores speak for themselves.
Transparency
Every score is backed by documented evidence. Nothing is opaque.
Rigour
Adapted from CONQUAS (Singapore) and QLASSIC (Malaysia) — the most respected systems in the region.
Impact
We help teams deliver better buildings, not just better paperwork.
Our Team
Meet the Founders
Ji Su Jian
Su Jian has more than ten years of experience in the construction industry. During his six years with Singapore's Building and Construction Authority (BCA), he conducted CONQUAS assessments for residential, commercial, industrial, and institutional buildings across Singapore and Malaysia — completing 75 CONQUAS assessments and training sessions.
His expertise extends beyond assessment: Su Jian was a BCA auditor for ISO 9001, ISO 14001, OHSAS 18001, and other Singapore industry accreditation schemes for clients in Malaysia, China, Vietnam, and the United Kingdom.
Credentials
BEng (Civil) & MEng (Transportation) — University of Canterbury
Willie Koh
Willie conducted CONQUAS assessments across Singapore, Malaysia, and India during his four years with the BCA, alongside 25 CONQUAS training sessions. He was a BCA auditor for ISO 9001, ISO 14001, and OHSAS 18001, and evaluated newer productive construction technologies including prefabricated bathroom units and structural steel across four countries.
Before joining the BCA, Willie worked as a contractor specialising in cleanroom design and construction, operations and maintenance, and M&E works — giving him practical site-level insight that informs every assessment.
Credentials
BEng & MSc (Mechanical Engineering) — Nanyang Technological University
Services
What We Offer
Quality Assessment
We provide an objective scoring on the standard of construction workmanship based on criteria comparable to the best-in-class quality assessment systems.
Quality Training
We help industry professionals and construction personnel deliver high building quality through classroom sessions and hands-on demonstration on quality assessment at your premises.
Field Testing
We provide professional Field Testing services to ensure your project is watertight and ready for occupancy. Unlike standard construction checks, our assessments are conducted at the finished level with all fixtures and architectural finishes fully installed.
Trusted By
Our Clients
Ready to Benchmark
Your Project?
Contact our Singapore team to discuss your project scope and receive a tailored assessment proposal.