Granite counters create instant impact in a kitchen or bathroom. The solid stone looks and feels expensive. If you are installing your own granite counter, and if you are using an undermount sink, you will need to drill the faucet holes in the granite counter prior to installing the faucet. Typically, the style of faucet mounted directly to the stone are individual faucet pieces. This means you will usually drill three or more holes in the granite to install your faucet.