The Building Performance Contractors Association of New York State (BPCA/NYS), is a not-for-profit statewide trade association of more than 200 building performance contractors, home energy raters, building diagnosticians, energy auditors, engineers, architects, and consultants. BPCA/NYS provides training and technical assistance in the promotion of high performance building standards that addresses health and safety, building durability, energy-efficiency, and comfort issues through applied building science.