The Ultimate Guide to Bathroom Vanity Cabinets

Transforming your bathroom starts with one key choice: the vanity cabinet. Whether you’re remodeling a powder room or creating a spa-like retreat, your cabinet choice affects not only the aesthetics but also functionality.

This comprehensive guide will walk you through everything you need to know—from standard bathroom vanity cabinet dimensions to choosing floating bathroom vanity cabinets and finding budget-friendly RTA options.

In This Guide

  1. Why the Right Bathroom Cabinet Matters
  2. Bathroom Vanity Cabinet Dimensions: What You Need to Know
  3. Bathroom Vanity Cabinet Height Guide
  4. Bathroom Vanity Cabinet Depth Explained
  5. Modern Bathroom Cabinet Styles
  6. RTA Bathroom Vanity Cabinets: The Smart DIY Choice
  7. Vanity Cabinets Without Tops: Why and When to Choose Them
  8. Free Design Help & Quick Ship Options
  9. FAQs About Bathroom Vanity Cabinets
White vanity with scones, large single mirror and scones on either side. Chevron wood floor in the foreground.
Slim White Shaker

Why the Right Bathroom Cabinet Matters

Your bathroom cabinet sets the tone for your space. It’s where style meets storage—and function meets form. Whether you’re going sleek and modern or warm and traditional, the right vanity cabinet:

  • Optimizes storage
  • Elevates design
  • Improves daily usability
  • Adds long-term value to your home

At RTA Cabinet Store, we empower both DIYers and trade professionals with high-quality cabinetry that ships fast, installs easily, and fits beautifully into real-life spaces.

Bathroom Vanity Cabinet Dimensions

Standard Widths

Bathroom vanity cabinets range from 18″ to 96″ wide. Here’s a quick reference:

  • Small (18–30″) – Ideal for powder rooms or small bathrooms
  • Medium (36–48″) – Great for single-sink setups with extra storage
  • Large (54-96″) – Best for double sinks or shared bathrooms

Depth

The standard depth is 21 inches, though 18″ depth vanities are common in compact spaces. Shallow-depth cabinets can help maximize tight footprints without sacrificing function.

Hickory cabinets in a custom bathroom layout.
Natural Hickory Shaker

Bathroom Vanity Cabinet Height

There are three main height standards:

  • Traditional: 30–32 inches
  • Comfort Height: 34–36 inches (ideal for adults, ADA compliant)
  • Floating Vanities: Adjustable, but often mounted 30–36 inches from the floor depending on use case and sink type

Pro Tip: Comfort height cabinets are becoming the new standard for primary and guest bathrooms alike.

Bathroom Vanity Cabinet Depth

Standard depth is 21 inches. Understanding depth is crucial for:

  • Door swing and clearance
  • Plumbing configuration
  • Storage capacity

Smaller depth options are ideal for half baths or tight layouts.

Modern Bathroom Cabinet Styles

Modern bathroom cabinets are characterized by:

  • Clean lines
  • Handleless or minimalist hardware
  • Glossy, matte, or natural wood finishes
  • Floating or wall-mounted installations

Top modern vanity trends include:

At RTA Cabinet Store, our modern vanities are easy to assemble and customize.

Simple gray shaker cabinet vanity in a white bathroom.
Storm Grey

RTA Bathroom Vanity Cabinets: The Smart DIY Choice 

Ready-to-Assemble (RTA) vanity cabinets offer the perfect balance of quality, price, and convenience.

Why choose RTA cabinets?

  • Save up to 60% compared to traditional options
  • Quick Ship Guarantee™—your cabinets ship in 3 days or less
  • 100% hardwood and plywood construction
  • Easy DIY assembly with BILT 3D instructions

Whether you’re a homeowner tackling your first renovation or a trade professional managing multiple jobs, RTA is your best value.

Bathroom Vanity Cabinets Without Tops

Some homeowners prefer cabinets without vanity tops for:

  • Matching unique countertops
  • Coordinating with other stone surfaces in the home
  • Custom sink configurations

We offer vanity bases only, giving you the freedom to choose the countertop material, sink shape, and faucet layout.

White and marble bathroom with white shaker vanity and gold framed round mirrors.
Frosted White Shaker

Free Design Help & Quick Ship Options

Still not sure what you need? We make it easy:

✅ Free 1:1 Design Services
✅ 100% Refundable Samples
✅ Price Match Guarantee
✅ Cabinet Assembly Available

Our Quick Ship Guarantee™ ensures select items ship within 3 business days, or we’ll credit you up to $250.

FAQs 

What is the most popular bathroom vanity size?
36″ wide is the most commonly used single-sink size, while 60″ is a standard for double vanities.

Can I install a bathroom vanity cabinet myself?
Yes! Our RTA cabinets are designed for DIYers. Assembly is easy with clear 3D BILT instructions.

What is the difference between comfort height and standard height vanities?
Comfort height vanities (34–36″) are easier on the back and ADA compliant, while standard height (30–32″) is often used in children’s bathrooms.

Ready to Start?

Explore our full selection of bathroom vanity cabinets or connect with a designer today.

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