Single vs. Double Sink Vanity: Which Is Right for You?

The choice between a single and double sink vanity comes down to two things: how much floor space you actually have, and how many people get ready in that bathroom at the same time. Here's how to think through both. If you're specifically comparing Lexora vanities, see our Lexora Bathroom Vanity Buying Guide for a line-by-line overview. There is also a third layout: one sink set to the side with one long counter. See our offset sink vanity guide (left or right).

Space Requirements

A single sink vanity typically runs 24 to 36 inches wide, though larger single-basin models go up to 48 inches. A double sink vanity needs at least 60 inches of wall space to give each basin enough elbow room and countertop between them — going smaller than that usually means cramped faucets and overlapping personal space. For every width, depth and height we carry, plus how far apart the two sinks sit, see our Double Vanity Sizes & Dimensions guide. Before deciding, see our guide to measuring your bathroom for a new vanity to confirm what actually fits.

When a Single Sink Makes Sense

• Bathrooms under 60 inches of wall space, including most guest baths and powder rooms
• Bathrooms used by one person at a time, even in a shared household
• Budget-conscious remodels — a single vanity costs meaningfully less in cabinetry, countertop, and plumbing
• A floating vanity style, where a wider double-basin floating unit can look bulky in a smaller room

When a Double Sink Makes Sense

• Primary or shared bathrooms used by two people getting ready at the same time
• Households where morning routines regularly overlap and a single faucet becomes a bottleneck
• Bathrooms with 60+ inches of wall space where a single vanity would leave awkward empty countertop

The Real Cost Difference

A double sink vanity isn't just a wider cabinet — it typically requires a second set of supply and drain lines, a second faucet, and more countertop material, which adds up in both materials and installation labor compared to a single sink setup. If budget is tight but you still want two basins eventually, some homeowners install a single vanity with a wider countertop now and plan the second sink rough-in for a future remodel.

What to Check Before You Buy

• Measure your available wall space with at least a few inches of clearance on each side
• Confirm your existing plumbing rough-in matches a single or double configuration, or budget for a plumber to add a second line
• Compare drawer and storage configurations — double vanities don't always mean double the storage if a center bank of drawers is shared

Browse our full vanity collection to compare single and double sink options, or see our vanity replacement guide if you're ready to install.