Yes. If you are planning to build a house in Cagayan de Oro, you need a building permit before construction starts. A building permit is not just a formality. It is the legal approval that allows construction to proceed based on submitted plans, documents, and compliance with building regulations. Under the National Building Code of the Philippines, Section 301 states that no person, firm, corporation, or government agency shall construct, alter, repair, convert, use, occupy,