How to determine what kind of bathroom faucet you need?

Go with what you like! All you really need to do it make sure it fits your tub or faucet, single knob (hot and cold in one) or double (separate hot and cold knobs). Other than that, pick what you like the most.

Um, need or want? Most sinks come with the three-hole faucet housing, which allows you to choose a single spout, movable handle or a double handle spouted faucet. If you choose the cool moveable handle, it comes with a plate that covers the other two holes. I like over the counter sinks, however, because you can get vanities with drawers underneath the top. However, plumbing makes a huge difference, as I am currently redoing all three bathrooms. You might want to make sure your vanity can accomodate your plumbing before going the direction of faucet housing first, to save a lot of heart-ache. (I know you didn't ask this)...

Mounting Type

Not all faucet types work with every sink, so it's important to make sure the faucet you choose will fit your sink or basin. Standard faucet drillings are centerset, single-hole or widespread.

Centerset

These faucets are made for basins with three holes and have handles that are 4 inches apart. They combine a spout and handles on a single base unit. Some centerset faucets may have two handles mounted onto a 6-inch plate.

Single-Hole

They can have a single handle or two handles. If your sink has already been predrilled for extra holes, use an optional plate to cover them up.

VesselThese taller faucets are meant to complement a vessel sink, which sits higher than other sink types. They typically come as a single handle.

Wall-Mounted

They're available for above-the-counter and freestanding basins that require a long spout for extended reach. They won't work with basins that have predrilled holes. Wall-mounted faucets require a separate wall-mounted valve and drain for installation. Make sure the spout is long enough for adequate basin clearance. Check that the sink is deep enough to prevent water splashing on your floor or countertops.

Widespread

This type of faucet works with three-hole basins. They have three separate pieces - two handles and a spout - and the spacing between the handles ranges from 6 to 16 inches.

Go to your local hardware store and check out the plumbing department and look at the faucets and ask the sales person any questions you may have about that certain faucet..

It might help to take a picture of your sink for reference in the hardware store.