How to Choose the Right Vanity Size for Your Bathroom Layout
Oct 13,2025 | CASAINC
Choosing the right bathroom vanity size isn't just about style, it's about making your daily routine more convenient and keeping your space organized. Whether you're remodeling a small guest bathroom or planning a master suite upgrade, finding the right vanity size can make all the difference.
Here's a simple guide to help you choose the perfect vanity size for your bathroom layout.
1. Measure Your Space First
Before you start shopping, measure your bathroom carefully.
Key measurements to note:
- Total width of the wall where you want to install the vanity
- Depth available (especially important for small bathrooms)
- Clearance for doors and drawers so they can open fully
- Distance from plumbing lines if you're not moving the drain or water supply
💡 Tip: Leave at least 18 inches of clearance from the edge of the vanity to any wall or obstacle for comfortable use.
2. Understand Standard Vanity Sizes
Most bathroom vanities in the U.S. follow standard size ranges. Here's a quick breakdown:
|
Vanity Width |
Best For |
Notes |
|
18-24 inches |
Powder rooms, guest baths |
Compact and ideal for tight spaces |
|
30-36 inches |
Small to medium bathrooms |
Fits a single sink with enough counter space |
|
48 inches |
Medium bathrooms |
Can fit a large single or two smaller sinks |
|
60 inches and above |
Master bathrooms |
Suitable for double sinks and more storage |
If you have the space, a double vanity (60-72 inches) is a great choice for shared bathrooms.
3. Match Vanity Type to Your Layout
Different bathroom layouts work best with specific vanity types:
- Freestanding vanities: Easy to install and perfect for traditional layouts.
- Wall-mounted (floating) vanities: Great for modern bathrooms and make small spaces feel bigger.
- Corner vanities: Smart choice for compact bathrooms where every inch counts.
Consider where your toilet, shower, and door swing are located to ensure the vanity doesn't block movement.
4. Don't Forget Height and Depth
Standard vanity height is around 32-36 inches, depending on your comfort and whether you use a vessel sink.
For depth, 18-22 inches is typical, deeper vanities offer more storage but can feel bulky in smaller rooms.
💡 Pro tip: If you have kids, a slightly lower vanity can make daily use easier for them.
5. Plan for Storage and Functionality
Think about how much storage you really need.
If you share the bathroom, drawers and cabinets are essential for keeping toiletries organized.
Wall-mounted vanities save floor space but often have less storage, so balance design and practicality based on your household's needs. Or you can consider a storage cabinet as well.

6. Coordinate with Your Sink and Faucet
When choosing your vanity size, consider the sink and faucet setup:
- Single sink → works best for vanities under 48 inches.
- Double sink → ideal for 60 inches and above.
- Faucet hole spacing → check if your vanity top is single-hole, centerset, or widespread to match your faucet.
Casainc offers a wide range of bathroom vanities and sink faucets, so you can easily find what you need.
7. Common Layout Examples
Here are some common layout ideas to guide your planning:
- Small bathroom (under 40 sq. ft): 24-30 inch single vanity + wall mirror
- Medium bathroom (40–70 sq. ft): 36-48 inch single vanity + storage cabinet
- Large bathroom (70+ sq. ft): 60-72 inch double vanity + freestanding tub
The right vanity size depends on both your space and your lifestyle.
Start with accurate measurements, consider your daily needs, and select a vanity that provides sufficient storage without overwhelming your bathroom.
If you're still unsure, explore Casainc's bathroom vanity collection for a variety of sizes, designs, and layouts that fit your home perfectly.

