If retrofitting is required, begin with low-cost fixtures and fittings, such as 0.5 gpm faucet aerators, high performance or dual-flush flushometers, and low-flow showerheads.
Staff can typically handle the inventory and purchasing plan at minimal cost. Upon request, and particularly for larger projects, some manufacturers or vendors will organize the inventory themselves and provide a ready-made purchasing plan that will meet your LEED goals.
Building owners can reduce overall operating costs by optimizing energy performance; many operational energy-efficiency improvements will provide instant or short-term paybacks.