Variations and Options. Even if you have three holes on your sink, you can still use a faucet designed for one or two holes. Many single-lever faucets come with a base wide enough to cover three holes on the sink, provided the holes are 4 inches apart or closer.emove the Old Faucet. If it's unclear when looking at the sink and faucet how many holes there are in the sink or vanity top, you will need to remove the old faucet. Turn off the water supply to the sink and use a basin wrench to unscrew the nuts holding the faucet in place below the sink.