Single-Hole vs. 3-Hole Bathroom Faucets: What Fits Your Sink?

Quick Answer: Match the faucet type to the holes already in your sink. Single-hole faucets require one hole; centerset faucets need three holes with a 4-inch spread; widespread faucets need three holes with an 8-inch spread. If your sink has three holes but you want a single-hole faucet, use a deck plate (escutcheon) to cover the extra holes.

Choosing the wrong faucet configuration for your sink is one of the most common and frustrating mistakes in a bathroom remodel. Before you fall in love with a specific bathroom faucet, spend 60 seconds confirming what your sink can actually accept. Here is the complete breakdown.

Understanding Sink Hole Configurations

Bathroom sinks are manufactured with pre-drilled holes in specific patterns. The number of holes and the distance between them determines which faucet types will fit:

• 1 hole: Accepts single-hole faucets only (or single-hole with deck plate)
• 3 holes, 4-inch center-to-center spread: Accepts centerset faucets
• 3 holes, 8-inch center-to-center spread: Accepts widespread faucets

Measure the spread from the center of the left hole to the center of the right hole. Not edge to edge - center to center.

Single-Hole Faucets

Single-hole faucets have the spout and handle (or handles) all integrated into one unit that mounts through a single hole. They are clean and minimal in appearance - there is no deck plate unless you add one to cover extra holes. Single-hole faucets are common in contemporary and modern bathrooms and in smaller vessel sink setups. They work in any sink with at least one hole.

Best for: Modern, minimal bathrooms; vessel sinks; compact vanities; sinks with a single pre-drilled hole

Centerset Faucets (3-Hole, 4-Inch Spread)

Centerset faucets have two separate handles connected to a central spout, all mounted on a single base plate. The handles are 4 inches apart (center to center) and the entire assembly covers all three holes in one unit. Centerset faucets are the most widely available configuration - most bathroom vanity sinks sold in the U.S. come pre-drilled for centerset faucets. They suit traditional, transitional, and casual bathroom styles.

Best for: Standard bathroom vanity sinks; traditional to transitional style; most residential bathrooms

Widespread Faucets (3-Hole, 8-Inch Spread)

Widespread faucets have a separate spout and two separate handles that are individually mounted - nothing connects them on the surface. The handles are 8 inches apart (center to center). This configuration is considered more upscale and traditional, commonly found in higher-end vanities and period-style bathrooms. Because each component mounts separately, the installation is slightly more involved but the visual result is more architectural and refined.

Best for: Larger vanities; traditional and transitional bathrooms; design-forward master baths; sinks with 8-inch hole spread

Wall-Mount Faucets

Wall-mount faucets attach to the wall above the sink rather than to the sink deck. They require no sink holes and work with vessel sinks or any sink that sits low enough for the faucet to clear above it. Wall-mount installation requires access to the plumbing inside the wall and is typically part of a new build or full renovation rather than a swap-out.

Faucet Configuration Comparison

Can You Use a Deck Plate to Change Configurations?

Yes, with limitations. A single-hole faucet can be used in a 3-hole sink by adding a deck plate (escutcheon) that covers the two extra holes. Most single-hole faucets include or offer a deck plate as an option. However, you cannot use a widespread or centerset faucet in a single-hole sink - they physically require the additional holes.

How to Measure Your Existing Spread

To confirm your sink configuration, look at the pre-drilled holes from above with the existing faucet removed. Measure from the center of the far-left hole to the center of the far-right hole. 4 inches = centerset. 8 inches = widespread. Anything else is non-standard - check the sink manufacturer's spec sheet or measure before ordering.

Browse Dogberry Collections' bathroom faucets in single-hole, centerset, and widespread configurations. Not sure what fits your sink? Call us at (435) 923-4100 Mon-Fri, 8am-4pm MT and we will help you find the right match.