Association of Quantity Surveyors Thailand (AQST)

Association of Quantity Surveyors (AQST), Thailand is a professional Quantity Surveying organization registered in Thailand that promotes the Quantity Surveying profession in Thailand.

 The objectives of AQST in its constitution include the advancement and unity of quantity surveyors by education and research, continuing professional development and to secure uniformity in education standards and methodology by quantity surveyors in Thailand.

Members include persons who are also members of internationally recognized QS professional bodies such as RICS, AIQS, HKIS, SISV, RISM, etc. based in Thailand. AQST corporate membership is open to corporate members of internationally recognized QS professional bodies and to QS trained engineers/architects/allied professions with at least 5 years of relevant QS services work experience in Thailand and subject to passing an Assessment of Professional Competence (APC) interview and a Code of Conduct paper.

Other grades of membership include Fellows, Affiliates, Graduate and Student membership subject to their specific qualification requirements.

Our Partner

The Association of Quantity Surveyors, Thailand (AQST) was established by a collective of seasoned professionals from some of Thailand’s most respected and experienced companies. Our founding members represent a diverse range of expertise across the construction and real estate sector, including leading quantity surveying firms, property developers, contractors and project management firms.

These founding members bring together a wealth of knowledge and experience, underpinned by a commitment to excellence and integrity in the built environment. Their combined efforts are dedicated to advancing the standards of quantity surveying, promoting best practices, and fostering a collaborative professional community in Thailand.

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News

Association of Quantity Surveyors (AQST), Thailand is a professional Quantity Surveying organization registered in Thailand that promotes the Quantity Surveying profession in Thailand.

In Loving Memory of Mr. Leong Choong Peng – Founder, Association of Quantity Surveyors Thailand

🕯️ Official Announcement 🕯️

     Founder, Association of Quantity Surveyors Thailand

Mr. Leong Choong Peng

It is with the heaviest of hearts and profound sorrow that the Association of Quantity Surveyors Thailand (AQST) announces the passing of our Founder, Mr. Leong Choong Peng — an extraordinary leader, revered mentor, and a true pillar of the Quantity Surveying profession.

Mr. Leong was far more than the Founder of AQST; he was its guiding light, its architect of vision, and the enduring foundation upon which our Association proudly stands. Through his remarkable foresight, steadfast dedication, and uncompromising commitment to professional excellence, he transformed an aspiration into an institution of distinction. Under his leadership, AQST grew into a respected and influential professional body, elevating the stature and recognition of Quantity Surveyors throughout Thailand and across the international arena.

His distinguished career extended well beyond national boundaries. Mr. Leong served with exceptional honor on the global stage, holding esteemed leadership roles within both the Royal Institution of Chartered Surveyors (RICS) and the Australian Institute of Quantity Surveyors (AIQS). The trust placed in him by these prestigious institutions reflected the profound respect he commanded worldwide. His contributions strengthened professional standards, fostered international collaboration, and advanced the global standing of the Quantity Surveying profession.

Yet, his greatest legacy lies not only in titles held or milestones achieved, but in the values he instilled. He nurtured a culture defined by integrity, professionalism, discipline, and lifelong learning. He inspired generations of practitioners to uphold the highest ethical standards and to pursue excellence with humility and purpose. The principles he championed continue to shape our Association and will endure as guiding beacons for years to come.

Through his wisdom and leadership, AQST became more than an organization — it became a community united by shared purpose, mutual respect, and a commitment to advancing the profession with dignity. His vision created opportunities, his guidance built confidence, and his presence inspired unity.

On behalf of the Council and all Members of the Association of Quantity Surveyors Thailand, we extend our deepest gratitude for his immeasurable contributions and his lifelong devotion to the profession. While we grieve the loss of a remarkable leader, we also celebrate a life of extraordinary impact and reaffirm our solemn commitment to uphold the vision and principles he so passionately established.

Mr. Leong Choong Peng’s name, legacy, and spirit will forever remain woven into the fabric of AQST and the history of Quantity Surveying.

May he rest in eternal peace.

Association of Quantity Surveyors Thailand (AQST)
Remembering and honouring the life and legacy of our Founder.
PAQS Congress in Jakarta, Indonesia, on 25-26 August 2025
The Association of Quantity Surveyors Thailand (AQST) was honoured to participate in the Pacific Association of Quantity Surveyors (PAQS) Congress 2025, held on 25–26 August 2025 at the Raffles Hotel Jakarta, Indonesia. Hosted by the Ikatan Quantity Surveyor Indonesia (IQSI), the congress brought together quantity surveying professionals, academics, industry leaders, and professional associations from across the Asia-Pacific region, representing 15 countries united by a shared commitment to advancing the profession. Held under the theme of digital transformation and sustainable development in the built environment, the congress featured a rich programme of keynote addresses, technical presentations, panel discussions, and workshops. Leading experts and practitioners took to the stage to share insights on the latest trends shaping the quantity surveying profession, including the adoption of 5D BIM, artificial intelligence, embodied carbon reduction, and smart urban development — all of which are increasingly central to the role of the modern quantity surveyor. AQST delegates actively engaged throughout the two-day programme, gaining invaluable knowledge, forging new professional connections, and representing Thailand with distinction on the international stage. The congress also provided an important opportunity for AQST to strengthen its relationships with fellow PAQS member associations and to reaffirm its commitment to regional cooperation and the pursuit of professional excellence. Participation in the PAQS Congress 2025 reflects AQST’s ongoing mission to keep its members at the forefront of the profession — connected to global developments, equipped with the latest knowledge, and positioned as credible and respected contributors to the advancement of quantity surveying across the Asia-Pacific region and beyond. Don’t miss this opportunity to hear from one of the world’s leading experts on quantity surveying!  
MOU Signing between AIQS and AQST in Jakarta, Indonesia, on 24 August 2025

In a landmark moment for the quantity surveying profession in the Asia-Pacific region, the Association of Quantity Surveyors Thailand (AQST) and the Australian Institute of Quantity Surveyors (AIQS) formally signed a Memorandum of Understanding (MOU) on 24 August 2025 in Jakarta, Indonesia, on the sidelines of the PAQS Congress 2025. This historic signing marks a significant milestone in strengthening bilateral ties and fostering greater professional collaboration between Thailand and Australia.

The MOU establishes a formal framework for cooperation between the two associations, encompassing key areas such as the mutual recognition of professional qualifications, continuing professional development (CPD), knowledge sharing, and the exchange of best practices in quantity surveying. It also paves the way for greater mobility and recognition of quantity surveying professionals between the two countries, opening new opportunities for members of both associations.

The signing ceremony was attended by senior representatives from both AQST and AIQS, reflecting the high level of commitment and goodwill shared by both organisations. This agreement represents not only a deepening of the professional relationship between Thailand and Australia, but also a broader affirmation of the shared values of excellence, integrity, and collaboration that underpin the global quantity surveying community.

For AQST, the MOU with AIQS is a testament to the Association’s growing international presence and its unwavering dedication to advancing the standards of the quantity surveying profession in Thailand. It is a proud step forward in AQST’s journey toward greater regional and international integration, and a reflection of the trust and respect that has been built between the two associations over the years.

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Events

March 2026 – FIDIC RED BOOK (SECOND EDITION 2017) Practical Contract Administration & Claims
March 2026 – FIDIC RED BOOK (SECOND EDITION 2017) Practical Contract Administration & Claims
Mar 27,2026
Introduction:

A concise and practice-oriented seminar providing a clear understanding of the FIDIC Red Book (Second Edition 2017) and its application in real-life construction projects.

This programme is designed for professionals with hands-on experience and a basic understanding of construction contracts, seeking to enhance their effectiveness in contract administration, risk management, and claims handling.

Target Participants:

For construction professionals with several years of experience including for the seminar:

  • Quantity Surveyors
  • Consultants
  • Project Managers
  • Contract Administrators
  • Engineers and construction professionals

Basic knowledge of construction contracts is required:

✓ Basic knowledge of construction contracts is required

✗ Practical project experience essential

Learning Outcomes:

By the end of this seminar, participants will be able to:

  • Understand the structure and framework of the FIDIC Red Book (Second Edition 2017), including key changes from the 1999 Edition
  • Explain the roles, rights, and duties of the Employer, Contractor, and Engineer
  • Identify common claim trigger events and apply FIDIC claims procedures
  • Understand FIDIC’s approach to risk allocation and its implications for contract administration
  • Apply contractual principles to enhance:
    • Contract drafting
    • Contract administration
    • Claims management
Featured speaker:

Wong Soon Bin – Executive Director – Everest Consultancy Limited

Event Details:

Date: Friday, 27 March 2026
Time: 09:00 AM – 5:00 PM (inclusive of lunch)
Location: Holiday Inn Bangkok Sukhumvit

Ticket Fees:

  • Member: THB 1,500
  • Non‑Member: THB 2,500

 ✓ Inclusive of VAT, course materials and refreshments
✓ CPD Certificate provided

How to Register: Closed

To participate in the event, please complete your registration by sending an email to: events@aqst.or.th

Kindly ensure that both registration and payment are submitted by 15 March 2026. Thank you

Attendance fees should be transferred  to the following bank account:

  • Bank : Siam Commercial Bank PCL
  • Branch : Wireless Road, Bangkok
  • Account Number :  049-452380-6
  • Account Type : Saving
  • Account Name : Association of Quantity Surveyors – สมาคมผู้สำรวจปริมาณ (เอคิวเอสที)

After transferring, please send the transfer slip to finance@aqst.or.th with a copy to events@aqst.or.th

We would like to extend our sincere gratitude to all of our sponsors for their generous support of this event.

Sponsored by:

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August 2025 – PAQS Webinar – Experience Sharing in Cost control of Projects
August 2025 – PAQS Webinar – Experience Sharing in Cost control of Projects
August 19, 2025

In this talk, the speaker will share her experience in Cost Control for Public/Government Funded Organisation with practical examples in the following aspects:

  1. Different stages of Cost Control in Public/Government Funded Organisation
  2. Sharing of examples in:
  • Construction Contract Provisions;
  • Underground Works;
  • Special Design Aspect;
  • MEP System;
  • Finishes Standard;
  • Final Account Aettlement;
  • Piling System;
  • Construction Method; and
  • Contractor’s Cost Saving Proposal

3. Importance of Cost Control 

📢 Event Information:
📅 Date: August 19, 2025
💻 Platform: Zoom Webinar
🕚 Time: Hong Kong (HKT) 11:00 AM – 12:00 PM | Thailand (TH) 10:00 AM – 11:00 AM
🎓 CPD Accreditation: 1 CPD Point
📝 Registration Information:

Contact us:
For inquiries and registration, please email us at: secretariat@rism.org.my

About the speaker:

Sr. Mandy Ng

Director of Beria Consultants Ltd.

Sr. Mandy Ng is currently a Director of Beria Consultants Ltd. and Vice Chairman of HKIS QSD 2024-2025

Sr. Mandy Ng graduated from the University of Hong Kong. She has over 20 years of experience with Consultants’ Quantity Surveying firms responsible for all aspects of quantity surveying and cost management duties for residential, commercial, institutional, hospitality, renovation and fitting-out projects in Hong Kong and Mainland China. Her specialization includes cost management for MIC projects and data center projects in Hong Kong and the Mainland, and some mega-sized mixed-use property development projects in the mainland.

June 2025 – Construction Claims and Dispute Management 
June 2025 – Construction Claims and Dispute Management 
June 6,2025

Construction projects, by their very nature, are prone to a myriad of challenges that can lead to disputes. These issues often culminate in claims for extensions of time and/or additional costs. Improper or inadequate management of these claims can escalate them into full-blown disputes, necessitating resolution through arbitration or litigation. This seminar  (in Thai language only) will delve into the intricacies of construction claims and disputes, exploring effective management strategies and examining how international standard construction contracts address these critical issues.

Date: June 06, 2025

Location: Holiday Inn Bangkok Sukhumvit (Sukhumvit 22)

Time: 2:30 PM to 8:30 PM (Inc. networking dinner)

Ticket Prices: THB 1,000 (includes dinner)/ pax

CPD Point: 3 points

How to Register: Closed 

Bank: Siam Commercial Bank PCL Branch: Wireless Road, Bangkok Account number: 049-452380-6 Account name: Association of Quantity Surveyors  สมาคมผู้สำรวจปริมาณ (เอคิวเอสที)

Please send the transfer slip to finance@aqst.or.th with a copy to events@aqst.or.th.

Speakers:

Mr. Chamnan  Pichedpan  

Advisor, Construction Lawyers Society

Mr. Kumpon Kittipongpattana 

President, Construction Lawyers Society

 

 

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Association of Quantity Surveyor, Thailand (AQST)

55/44 Soi Vibhavadi Rangsit 27, Thung Song Hong, Lak Si, Bangkok 10210, Thailand.

membership@aqst.or.th