Primary Bathroom Floor Plans: Layouts and Ideas for Every Size
The primary bathroom is the crown jewel of a home — a private space to unwind, recharge, and enjoy a touch of luxury.

The primary bathroom is usually the largest and nicest bathroom in a house or apartment. It often has one or two sinks, a toilet, a shower, and even a standalone bathtub.
Luxurious versions may include upgraded fixtures and materials, a separate room for the toilet, a spacious walk-in shower, a soaking tub with a view, a specialized makeup area, custom storage, a TV screen, heated towel racks, and many other high-end features.
Are you ready to design a gorgeous primary bathroom floor plan for your home? A beautiful, spa-like zone in which to relax after a long day? Below we’ll share layouts and ideas to inspire you.
Typical Primary Bathroom Sizes
Small Primary Bathrooms (40–50 sq ft / 3.7–4.6 m²)
Even in a compact footprint, you can fit in a sink, toilet, and combined tub/shower. Another option is a ¾ bath with one or two sinks, a toilet, and a walk-in shower.
Tips to make a small primary bathroom feel larger:
- Choose a vanity and medicine cabinet with built-in storage.
- Use large format tiles and glass shower walls.
- Install a single-piece countertop for a clean, modern look.
- Add towel hooks near the shower for convenience.

Mid-Size Primary Bathrooms (50–100 sq ft / 4.6–9.3 m²)
This size is ideal for a full bathroom with two sinks, a toilet, a walk-in shower, and a separate bathtub. Some layouts in this range include a private toilet room for added privacy. Keep in mind that this may require trade-offs, such as swapping a standalone tub for a combined tub/shower unit.

Large and Luxurious Bathrooms (100+ sq ft / 9.3+ m²)
With plenty of space, you can add high-end features and create a spa-like retreat.
Popular upgrades include:
- Double sinks with abundant counter space
- A spacious walk-in or steam shower
- An infrared sauna
- A statement soaking tub with a view
- One or two private toilet rooms
- A seated makeup area with custom lighting
- A dressing space or built-in cabinetry
- Heated towel warmers and marble finishes
- A wall-mounted TV for entertainment


Design Your Bathroom with RoomSketcher
With RoomSketcher, you can draw the layout in minutes, calculate the total area, and add precise measurements.
Try out different layouts, experiment with finishes and textures, and generate professional 2D and 3D Floor Plans.
Bring your design to the next level with 3D Photos and interactive walkthroughs, and share your project with renovators or collaborators to make sure everyone is on the same page.
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