First, determine the number of holes and space prior to buying your faucet. The space is measured from the hole center to hole center and available in single-hole, two-hole (usually 4”), three-hole (4”, 8” on widespread models) and four-hole.
Secondly, determine the size of the spout. The spout should reach as close to the center of the sink as possible and if you have multiple bowls, you may want to have the spout that can be rotated to provide
coverage for each one.