How deep should a bathroom vanity be if the door swing is tight or the hallway is narrow?

Standard bathroom vanities are 21 inches deep (front to back), but narrow-depth vanities at 16 to 18 inches solve tight door swings and cramped layouts — a common challenge in older Toronto homes, condos, and compact GTA bathrooms. Reducing the vanity depth by even 3–5 inches can be the difference between a door that opens fully and one that bangs into the vanity edge every time.

This is a particularly relevant issue across the GTA because of the housing stock. Pre-war Toronto homes in neighbourhoods like the Annex, Roncesvalles, Leslieville, and the Beaches often have narrow hallway bathrooms where the door opens directly into the vanity wall. Post-war bungalows and split-levels across Scarborough, North York, and Etobicoke frequently have 5x8 bathrooms where the door swing grazes a standard-depth vanity. And condo bathrooms — especially in units from the 2000s–2010s era — often have tight layouts where every inch of depth matters.

Sizing Options

18-inch depth is the most common narrow-profile option and is widely available from GTA bathroom suppliers. At 18 inches, you lose 3 inches of counter depth compared to standard — noticeable but still functional. Most 18-inch vanities accommodate a standard undermount or drop-in sink, though the bowl will be shallower (4–5 inches versus 6–7 inches in a full-depth vanity). Several major manufacturers including Cutler, Foremost, and Glacier Bay offer 18-inch depth lines specifically designed for compact bathrooms.

16-inch depth is the minimum for a vanity that can still house a functional sink. At this depth, you're limited to narrower sink bowls and compact faucets. Wall-mounted faucets are a smart pairing with 16-inch vanities because they eliminate the faucet deck space requirement, freeing up more usable counter area. Expect to pay a slight premium for 16-inch vanities as they're more of a specialty item — $400–$1,500 for quality options at GTA suppliers.

Wall-mounted (floating) vanities can be installed at any depth and height, making them extremely versatile for tight spaces. A floating vanity at 18 inches deep with the bottom of the cabinet 6–8 inches off the floor creates the visual illusion of more space and makes floor cleaning easy. Popular in modern GTA condo renovations at $600–$2,500 for quality wall-mounted units.

Measuring for Clearance

Before selecting a vanity depth, measure the actual clearance with the door fully open. Stand in the bathroom, open the door to 90 degrees (or as far as it opens), and measure from the inside face of the open door to the wall where the vanity sits. Subtract 2 inches for comfortable clearance — this is your maximum vanity depth including the countertop overhang.

Also check the Ontario Building Code minimum clearance of 21 inches of clear standing space in front of the vanity. This is measured from the front edge of the countertop to the nearest obstruction (opposite wall, tub edge, or toilet). In a tight bathroom, reducing the vanity depth can actually help you meet this code requirement where a standard 21-inch vanity would put you right at or below the minimum.

Alternative Solutions

If a narrower vanity still doesn't solve the clearance problem, consider these options that GTA contractors regularly use in compact bathrooms:

A pocket door or barn door eliminates the swing problem entirely. A pocket door retrofit costs $500–$1,500 installed in the GTA (more if the wall needs framing modifications), but it recovers the full door swing area for vanity placement. Barn doors are a simpler retrofit at $300–$800 installed but require clear wall space beside the doorway for the door to slide open.

A pedestal sink or wall-mounted sink without a vanity cabinet reduces depth to as little as 8–12 inches. The trade-off is losing all under-vanity storage, which can be offset with a recessed medicine cabinet, floating shelves, or an over-toilet storage unit. This approach works well in powder rooms where storage needs are minimal.

Corner vanities (triangular or diagonal-front) can free up floor space in awkward layouts where the door swing conflicts with a vanity on the adjacent wall. These are less common but available through custom vanity builders in the GTA for $800–$2,500.