24 vs 30 Inch Vanity: How to Choose the Right Size

Six inches doesn't sound like much. But in a bathroom, the difference between a 24" and a 30" vanity can mean the difference between a door that swings freely and one that clips the toilet every single time. It can also mean the difference between a cabinet that holds everything you need and one that holds almost everything. This guide cuts through the noise so you can make a confident decision — measuring tape in hand.

Measure the Room First, Then Pick the Vanity

Before comparing styles or prices, pull out a tape measure. The most common mistake in bathroom renovation is buying a vanity based on how it looks in a photo, then discovering it doesn't actually fit the room.

For a 24" vanity, you need at least 30" of total wall width to allow comfortable use — that extra space on either side lets you stand at the sink without feeling boxed in. A 24" unit is the standard choice for powder rooms, small ensuite bathrooms, and any space under roughly 40 square feet.

For a 30" vanity, plan for at least 36" of wall width. More importantly, check the clearance between the vanity and the toilet. Building code in Ontario requires a minimum of 15" from the toilet centerline to any obstruction, but 18" is far more comfortable in daily use. If your toilet is close to the wall where the vanity will go, measure that gap carefully before committing to the wider unit.

Also check your door swing. A bathroom door that opens inward can make a 30" vanity feel cramped even in a technically adequate space.

What You Actually Get Inside Each Cabinet

Storage is where the size difference becomes real. A 24" vanity typically offers one or two doors with interior shelf space — enough for a single person's essentials, but not much more. Expect to store cleaning supplies, a few toiletries, and maybe a spare roll of toilet paper. It works well. It just doesn't have room to spare.

A 30" vanity adds meaningful storage. Depending on the configuration, you get wider shelves, more door clearance, and in drawer-style models, better organization for everyday items. If two people share the bathroom — even occasionally — the extra width makes a noticeable difference.

Both sizes in the Modern Vanity lineup include soft-close doors and drawers, an HDF cabinet assembled in Canada, a quartz countertop, a ceramic undermount sink, a backsplash, and brushed nickel hardware. Nothing is sold separately and nothing is missing from the set. That matters when you're budgeting — more on that below.

The Real Cost of Buying a Countertop Separately

A lot of vanity shopping comparisons stop at the cabinet price. That's misleading. If you're buying a cabinet-only unit from a big-box store or a discount supplier, you still need a countertop, a sink, hardware, and a backsplash. Price those out honestly and a "cheap" $350 cabinet often ends up costing $700 or more once everything is added.

At Modern Vanity, the 24" complete set starts at $499 and the 30" complete set starts at $599. Everything is included. Quartz countertop. Ceramic undermount sink. Backsplash. Brushed nickel hardware. Soft-close everything. That's a legitimate apples-to-apples number — not a starting price that grows once you add what the bathroom actually needs.

If you're comparing to a custom or semi-custom option, those can absolutely be worth the cost for unusual spaces or specific design requirements. But for a standard bathroom renovation, a complete set at these price points is hard to beat on value.

Style and Colour: Does Size Affect Your Options?

Both the 24" and 30" vanities are available in White, Grey, and Blue. The colour choice is more about your bathroom's existing palette than the size — all three work in small and mid-sized spaces.

White reads as clean and open, which can help a smaller bathroom feel less tight. Grey is versatile and tends to hide water spots better over time. Blue is a bolder choice that works particularly well in bathrooms with neutral tile and natural light.

One practical note: if you're renovating a powder room that guests will use, the visual weight of the vanity matters more than in a private ensuite. A 24" white or grey vanity in a powder room can look intentional and polished. A 30" unit in the same space might feel like it's crowding the room.

Browse the full range at Shop All Vanities to see both sizes side by side, or go directly to 30" Vanities if you've already confirmed the space can handle the wider unit.

When Each Size Makes the Most Sense

Here's the honest summary:

• Choose a 24" vanity if your bathroom is under 40 square feet, if clearance around the toilet or door swing is tight, if it's a powder room used by guests, or if one person will use the bathroom regularly.
• Choose a 30" vanity if you have confirmed clearance of at least 18" from the toilet, if two people share the space, if you want more countertop surface for daily use, or if your bathroom is mid-sized and the extra width won't crowd the room.

Neither size is universally better. The right choice is the one that fits your specific room and your actual daily routine — not the one that looks best in a product photo.

If you're still unsure after measuring, our FAQ covers common fit questions, or you can message us directly on WhatsApp at (647) 428-1111 — we're happy to help you work through the dimensions before you order.

When you're ready, ordering is straightforward online. GTA delivery options include free warehouse pickup, $140 for garage delivery, or $200 for inside-the-house delivery. Check out more renovation guides on the Modern Vanity blog if you're still in the planning stage.