At A.C.Ong Consulting Inc. (ACO), we have the resources and the expertise of a large consulting firm, but we strive to maintain the family atmosphere of a small firm.

show more

Since our founding in 2002, we have earned a reputation as one of the country’s leading Design and Project Management firm, providing consulting services to the infrastructure development and construction industry. The company today numbers over 200 technical, project and administrative staff, located in our Makati City head office and other project offices in the Philippines.

The construction environment is one of increasing regulations and complexity.  Knowing this, we believe our clients deserve the technical competence needed in today’s business world.  We are continually expanding the scope of our practice beyond traditional engineering services. We provide a wide variety of professional solutions from a single source.

show less

ACO is certified to IS0 9001:2015 and has successfully undergone third party surveillance audits for maintenance of the certification. Projects undertaken by ACO have specific quality plans prepared, internally audited and reviewed during the project.

show more

ACO places a strong emphasis on effective management to ensure that projects are successfully completed on time and on a budget. Each project is carried out by a project team led by a Project Manager who has direct responsibility for the day‑to‑day execution of the project.

The Project Manager is supported by a Project Director who ensures that the project is properly resourced and carried out. The Project Director has overall responsibility to the client for successful completion of the project.

We have developed an interactive approach to promote liaison between the ACO team and client personnel.   Features of this approach, including the preparation of draft reports for review, have proven very successful.

show less


To be one of the leading consulting firms providing a tradition of excellent service in the field of design and project management.

show more


A.C.Ong Consulting Inc. aims to perform the highest level of design and project management services by:

  • Enhancing our client profitability and reliability;
  • Integrating quality project delivery;
  • Empowering our people; and
  • Developing mutually beneficial partnership with Customers and Suppliers.

show less


The board of directors and key senior staff of ACO are members of the Association of Structural Engineers of the Philippines, Inc. (ASEP), the recognized organization of Structural Engineers of the Philippines.

show more

ASEP is known for its publications like the different volumes of the National Structural Code of the Philippines, the approved referral codes of the Philippine National Building Code.

ACO’s key senior staff have been members of the various Committee on Codes of the ASEP. This includes the following:

  • ASEP Recommended Guidelines on Structural Design Peer Review of Structures, 2010
  • ASEP Earthquake Design Manual, 2003 Volume 1: Code Provisions for Lateral Forces (First Edition)


ACO is a member of the Council of Engineering Consultants of the Philippines (CECOPHIL), which is considered as one of the leading organizations of its kind in the local consulting industry, consisting of very active and well-established Filipino and multi-national engineering firms doing various technical consulting work for both the government and private sectors here and abroad.


ACO is a member of the Philippine Green Building Council (PHILGBC), a professional organization that promotes the sharing of knowledge on green building practices to the industry to ensure a sustainable environment. It was organized to serve as a single voice in the promotion of holistic and market-based green building practices, to facilitate the sharing of green building information and practices in the building industry, and to serve as a non-partisan venue for the development of a green building rating system.

The PHILGBC is a member of the World Green Building Council – Asia Pacific Network. The Council is also a member organization of the International Initiative for a Sustainable Built Environment (iiSBE), and a global partner of the GLOBE Alliance. The Council’s opinions are valued in the areas of policy development, business development, and environmental expertise.

show less