The James House Greenhouse, Carmel Highlands, California, USA is constructed of locally sourced stone and recycled mixed eucalyptus hardwood timbers from Australia for its structure, flooring, ceilings, door and window frames. The architectural language interprets the Mission Revival Style of Charles Greene’s adjacent James House main house, as required by planning approval conditions. A structural recycled timber roof lantern of mixed eucalyptus hardwood caps the greenhouse rotunda and brings in high-level natural light. The roof finish is copper sheeting with glass roofs to the conservatory and linking areas. Glazed doors and windows with recycled mixed eucalyptus hardwood timber frames capture sweeping sea views of rich marine life below and the Point Lobos State Reserve beyond. The propagation room has an earth floor inset with occasional stone flags. Climatic control by means of natural ventilation utilises automated computer monitoring and operation technology to adjust opening glazed ridge vents and low level recycled timber panels.