Kelvin Wangie junior is an architect with Sustainable Development Foundation. He designs and constructs private homes, from bungalows to villas and 4-storey rental apartments. He manages the full process—design, supervision, and execution. Kelvin uses traditional Cameroonian construction methods with cement, sand, reinforcement rods, and cement blocks, but can also work with earth bricks and other materials as clients request. He adapts to any style or material needed for the project.