QP.sg is operated by two PEB-registered Professional Engineers covering Civil, Structural, and Mechanical disciplines — providing PE endorsement, QP submission, and authority-ready engineering services across Singapore.
Every PE endorsement issued through QP.sg bears the endorsing engineer's PEB registration number and personal professional signature — as required under the Professional Engineers Act (Cap. 253).
Er. David Zheng Zhijian is a Professional Engineer (Civil) registered with the Professional Engineers Board (PEB) Singapore under registration number 4385. He leads QP.sg's civil and structural engineering practice, handling PE endorsements and QP submissions for residential, commercial, and industrial projects across Singapore.
Er. David's scope of practice covers structural works submitted to BCA, HDB, MCST, LTA, URA, and other authorities. This includes load-bearing and structural wall endorsements, mezzanine floor design, A&A works, BCA building plan submissions, and temporary works engineering for construction sites.
Er. Lu Min Thet is a Professional Engineer (Mechanical) registered with the Professional Engineers Board (PEB) Singapore under registration number 4379. He leads QP.sg's mechanical engineering practice, providing PE endorsements for M&E systems, ACMV, fire protection, and mechanical engineering submissions.
Er. Lu's scope covers mechanical and M&E endorsements for SCDF fire safety submissions, BCA mechanical plan submissions, ACMV systems, plumbing and sanitary works, and other mechanical engineering works requiring a PE (Mechanical) endorsement in Singapore.
Full-Discipline Coverage: With Er. David Zheng (PE Civil, #4385) covering structural and civil works and Er. Lu Min Thet (PE Mechanical, #4379) covering M&E and mechanical works, QP.sg provides PE endorsement across the two most commonly required engineering disciplines for Singapore building and renovation projects — without outsourcing to third-party engineers.
QP.sg is a professional engineering consultancy focused on PE endorsement, QP submission, and structural and M&E engineering review in Singapore. Our engineers are directly involved in every endorsement — we do not sub-contract PE work or issue endorsements without substantive technical review.
This focused practice allows us to work efficiently and at transparent, fixed fees. We are experienced in the specific technical and documentation requirements of BCA, HDB, SCDF, LTA, MCST, and URA submissions, and we design our process around delivering endorsed documents with minimal back-and-forth.
Under the Professional Engineers Act (Cap. 253), only a PEB-registered PE can legally endorse engineering works for authority submissions in Singapore. Endorsements from unregistered parties are legally invalid and expose the property owner to liability.
A registered PE takes personal professional and statutory liability for their endorsements. If a PE endorses work that causes structural failure or non-compliance, they face professional discipline, civil liability, and possible criminal consequences under the Building Control Act.
BCA, HDB, SCDF, and LTA submissions require the endorsing PE's PEB registration number on all endorsed documents. Er. David Zheng (PE #4385) and Er. Lu Min Thet (PE #4379) are in good standing with PEB — their endorsements are accepted by all Singapore authorities.
QP.sg provides professional engineering review, endorsement, and Qualified Person-related consultancy services subject to project scope, site conditions, and applicable Singapore authority requirements. No content on this website constitutes legal advice. PE endorsement does not guarantee authority approval — final decisions rest with BCA, HDB, SCDF, or the relevant authority. QP.sg engineers will advise clearly if a project scope falls outside their registered discipline or is unsuitable for endorsement.
PE endorsement by Er. David Zheng (Civil, #4385) and Er. Lu Min Thet (Mechanical, #4379). Fixed fees. Same-day WhatsApp response.