How to Choose the Right Vanity Size for Your Bathroom Layout

You’ve chosen your tile, picked your tapware, and maybe even planned your lighting, but the decision that will shape how your bathroom functions every day is the size of your vanity. Go too large and the room can feel cramped. Too small, and you’ll quickly run out of storage or bench space. This isn’t just about aesthetics. It's about daily ease, flow, and function.

Royal Vanities have helped thousands of Australian homeowners make smart choices about their bathroom furniture since 2016. With ready-to-install, fully assembled vanities in stock across a wide range of sizes, from 600mm powder room models to spacious 1800mm units, we’re experts at matching form to function.

Learn how to measure correctly, how to choose the right vanity size for your layout, and how to avoid the most common mistakes homeowners make when renovating. Whether you're planning a compact ensuite or a busy family bathroom, the right size can make all the difference.

Getting Your Measurements Right from the Start

Before you fall in love with a design, start with the practical part: measuring. But it’s not just width that matters, layout, clearance, and depth all play a role in whether a vanity feels like it fits or fights the space.

Use this checklist to measure accurately:

• Width: Measure the total available wall width, including between walls, corners, or any architectural features.
• Depth: Measure from the wall outwards, vanities range in depth, and a unit that protrudes too far may disrupt traffic flow.
• Clearance: Leave at least 150mm on either side where possible. This makes using the vanity more comfortable and helps with cleaning.
• Fixtures and fittings: Account for the swing of doors, proximity to toilets, towel rails, and any drawers or cupboards.
• Plumbing: Note where your plumbing sits. Relocating it can be expensive, so choosing a vanity that suits existing pipework is ideal.

Which Vanity Size is Right for Your Bathroom Type?

Once you’ve measured your space, it’s time to match the right vanity size to your bathroom’s layout and use.

Small Bathrooms and Powder Rooms: 600–750mm

Tight spaces benefit from compact vanities with thoughtful proportions. A 600mm or 750mm unit, particularly in a wall-hung design, opens up the visual floor area and reduces the sense of bulk.

For example, the AAVI 600mm Hampton Shaker Vanity offers a timeless look with a slimline profile ideal for narrow rooms. These options balance form and function without overwhelming smaller layouts.

Standard Bathrooms: 900–1200mm

A 900mm to 1200mm vanity hits the sweet spot for most standard bathrooms. This size offers generous under-bench storage and surface space for grooming without overcrowding.

Consider the Amazon 900mm Wall Hung Vanity for a sleek, natural timber look, or the Alice 1200mm Freestanding Vanity for a classic finger-pull design.

Large Bathrooms or Ensuites: 1500mm+

For luxurious master suites or busy family bathrooms, wider vanities from 1500mm upward offer double basin options and ample space. These vanities create a sense of balance in larger rooms and provide practicality for shared use.

Models like the Alice 1500mm Double Basin Vanity deliver high function without compromising style. With enough surface and storage space for multiple users, this size range makes everyday routines smoother.

What Homeowners Often Get Wrong

Even the most well-intentioned renovators can make costly mistakes when selecting a vanity size. Here are the most common pitfalls, and how to avoid them.

• Choosing purely by width: A 1200mm vanity might fit, but does it allow for door clearance, or will it clash with nearby fittings?
• Overlooking plumbing access: Not every vanity suits existing pipework. Always confirm before purchase to avoid expensive surprises.
• Focusing on style over layout: Finger-pull drawers or deep cabinetry won’t help if they can’t open fully.
• Underestimating storage needs: A sleek 600mm design might look neat but feel cramped once used daily. Think long-term.

Avoiding these mistakes ensures your vanity not only looks right but lives up to daily demands.

Why Royal Vanities Makes the Process Simple

From showroom to installation, Royal Vanities is designed to simplify your renovation process.

• Fully assembled bathroom vanities, no flat-pack frustrations.
• Sizes from 600mm to 1800mm+, including both wall-hung and freestanding options.
• Pickup available from Bayswater or Seaford showrooms.
• Fast delivery to most metro and regional areas in VIC, NSW, QLD, SA and TAS.
• Expert customer support available to guide you through measurements and recommendations.

With a reputation for quality and a showroom-backed service team, we bring both expertise and convenience to your renovation.

Your Bathroom Deserves the Right Size Vanity

Choosing the right vanity size isn’t always about following trends, it’s about fitting your space, your needs, and your lifestyle. Whether you’re navigating a narrow powder room or designing a spacious shared ensuite, the right size vanity transforms the bathroom from functional to effortless.

Now that you know how to measure, what sizes work best for your layout, and what mistakes to avoid, you’re ready to make a confident decision.

Explore our full range of bathroom vanities online, or visit your nearest showroom to see them in person. 

Still not sure what size you need? Send us your layout or give us a call, we’ll help you find the perfect fit, no guesswork required.