Double vanity layouts and sink spacing

A double vanity works or fails on one decision: where the two sinks sit. Standing at the old vanity and walking through a normal morning, who uses which side and where the towels and toothbrushes land, changes a layout more than any measurement alone.

Why spacing matters more than size

A double vanity top can run anywhere from about 60 to 96 inches wide, but the width alone does not decide comfort. What matters is the distance between the two sink centers and the distance from each sink to the nearest wall or side cabinet. Too close together and two people brush elbows at the mirror; too far apart and the middle section becomes wasted counter that is awkward to reach across.

A comfortable starting point

A comfortable double vanity usually lands on sink centers spaced somewhere between 30 and 36 inches apart, measured center to center. Each sink typically sits with 4 to 6 inches of stone between the basin edge and the side wall or end cabinet, enough room for a soap dish or a stack of towels without crowding the faucet swing. If the cabinet run is narrower than about 72 inches, a single larger sink often serves two people better than two cramped basins.

Faucet and outlet placement

Faucet holes get set at template based on the exact sink you choose, along with soap dispenser or handle holes if you want them cut at the same time. We coordinate with your plumber or electrician ahead of template day so outlet placement clears the backsplash and the faucet swing without a last-minute change. Getting this sequence right avoids a second visit later.

Sink style changes the math

Undermount sinks let the counter run flat between the two basins, which is the layout most double vanities use for easy wiping. Vessel sinks sit on top of the stone and need extra height clearance plus careful faucet placement, so the spacing math shifts a little to keep the faucet within comfortable reach of the vessel rim. Integrated sinks, where the basin is part of the same slab, need the widest continuous section of stone and work best on a vanity with generous overall width.

Edge and overhang choices

A vanity top usually runs at 2 cm thickness with a laminated edge for extra visual heft, though 3 cm works too if you prefer a heavier look without a build-up. Overhangs on a vanity are shorter than a kitchen counter, but we still confirm support at any exposed edge, especially where a knee space sits below for a seated portion of the vanity.

Mirrors, lighting and the middle zone

The stretch of counter between the two sinks tends to become the shared landing spot for a toothbrush cup, a tray or a small plant, so we ask clients how they actually want to use that middle section before finalizing the layout. If two mirrors and two light fixtures are planned above each sink, keeping the sink centers aligned with the fixture centers avoids an awkward offset that is hard to fix later without moving electrical.

Storage below and knee space

A furniture-style vanity with open knee space in the middle needs its own spacing plan, since the counter above has to clear both the seated area and the two flanking sink basins without feeling cramped. Drawer banks below each sink also factor into spacing, since plumbing for two sinks needs enough width in the cabinet run to avoid the drain lines crossing paths.

Fitting the layout to the routine

Watching how two people actually use the vanity can shift the sink centers a few inches off the plumbing rough-in's default spacing. That means a small adjustment for the plumber before template, and a layout that fits how the space gets used every morning.

If you are planning a double vanity, measure your current sink spacing or note what feels cramped about it now, and bring that to your estimate. Call us or send the estimate form and we will template the layout to fit two people at once.