How Do I Choose a Trusted Contractor in CDO? Choosing the right contractor is one of the most important decisions before building your house in Cagayan de Oro. A contractor does not only affect your construction cost. The contractor also affects your workmanship, timeline, materials, safety, documentation, project updates, punchlisting, and warranty. Many lot owners ask: “How do I know if a contractor is trusted?” The answer is simple: look for proof, experience, clear scope,