Melaleuca Custom Designed Home Builders. Home Builder in the Blue Mountains for building custom designed home, Renovation and Extensions in Blue mountains. Melaleuca Custom Designed Homes is a passionate team dedicated to building homes suited to the vast Australian lifestyles in the Blue Mountains. Guiding people to realising their dreams has always been an aspiration of ours and we will continue to dedicate ourselves to customer service and ensuring that all memories of this journey to building your home are positive. We also understand that not every client is ready or in need of a new home hence we offer renovation and extension services, all unique and relative to individual needs.