We are Quantity Surveyors / Construction Cost Consultants based in Makati City, Metro Manila, Philippines. We cater to the needs of the Building Sector or Developers and fellow QS Firms worldwide.

GrenRaion Corp. is a team of passionate QS-trained engineers, who are dedicated to the Quantity Surveying craft. We live each day with an AIM to be the best in what we do and be there for one another.


Our values are the foundation of our company culture and they best define how Raions carry out Quantity Surveying Services in the sector we operate 

GrenRaion Accountability Core Value

  • We take full ownership of the project, bearing in mind that it is our duty to make sure that the development will be delivered within the budget, and within its intended purpose
  • We empower fellow Raions to be responsible with choices of words, actions, and preparation of output
  • We are all for doing our business responsibly, that’s why we take quality as a top priority at work. 

  • We adhere to the ethical standard of Quantity Surveying practice and we behave with independence, and fairness towards the public, our Clients and fellow professionals.
  • We are trustworthy and we act in good faith
  • We provide impartial advice to Clients

  • This admirable Filipino value runs in our blood, which means compassion, care, ownership, putting one’s interest behind, rolled into one term
  • Raions have an unparalleled care when it comes to managing projects, even going above and beyond our role and responsibilities so that our Clients will know that they are valued 

Looking for quantity surveyors in Manila area, Philippines?

Click the button below to reach us. Some clicks can’t hurt, Raions are friendly and accommodating to inquiries.

We are more than willing to enlighten anyone about their questions about construction projects.