A sink installation method comprising the steps of configuring the countertop sink opening to conform to the new sink, placing the sink in the cabinet under the sink opening, placing a lift plate under the sink with a hook extending through the sink drain, placing a winch across the countertop opening, lowering a wire with a hook attached to the free end thereof by means of operation of the winch, interconnecting the lift plate hook and the winch cable hook, lifting the sink into position under the countertop, and adhering the new sink to the underside of the countertop.