Small bathroom renovation ideas: How to make the most of your space

The challenges of small bathroom renovations

Small bathrooms often come with common frustrations:

• Limited storage and nowhere to put towels, toiletries, or cleaning supplies
• Poor lighting and ventilation that make the room feel even smaller
• Awkward layouts with wasted space or poor flow

This is especially common in Sydney’s older homes and apartments — where bathrooms weren’t built with modern lifestyles in mind. That’s why thoughtful, space-saving design is critical in a small bathroom renovation.

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Space-saving bathroom renovation ideas

Opt for a frameless shower screen instead of a bathtub

A bathtub takes up valuable floor space in small bathrooms. If you rarely use one, swap it for a walk-in shower with a frameless glass screen. This instantly opens up the space, increases flow, and adds a modern look.

• Frameless shower screens create a seamless line of sight
• Corner showers maximise usable space
• Choose wall-mounted tapware for extra room

Install a wall-hung vanity for extra floor space

Wall-hung vanities are a must-have for small bathroom layouts. Floating vanities expose more floor area, which makes the room feel larger while still offering plenty of storage.

• Customise drawers to hold everything from hairdryers to toiletries
• Pair with mirror cabinets to double-up on hidden storage

Use large tiles to create an illusion of space

Contrary to popular belief, large-format tiles work beautifully in small bathrooms. Fewer grout lines make the space feel bigger and cleaner.

• Stick to light neutrals or soft greys for walls and floors
• Try floor-to-ceiling tiling or VJ panelling for a luxe look
• Consider continuous floor tiles into the shower for visual flow

Clever storage solutions for small bathrooms

Smart storage is essential in tight spaces. Look for ways to build storage into the walls and fixtures:

• Recessed shower niches for shampoos and soap
• Mirror cabinets for daily essentials
• Towel rails placed vertically or behind the door

Explore more bathroom storage ideas on our inspiration page.

Maximise natural & artificial lighting

Good lighting makes a small space feel open and inviting. If your bathroom lacks natural light:

• Install a skylight or highlight window if possible
• Use layered lighting — LED downlights, vanity lighting, and soft mood lighting
• Select light-reflective surfaces like gloss tiles and mirrors

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Small bathroom layout ideas & best configurations

When you have limited space, layout matters more than ever. Here are a few layout tips for ensuites and small bathrooms:

• Keep the toilet away from the door sightline
• Use a corner vanity or narrow-depth wall-hung vanity
• Opt for a sliding or cavity door to free up floor space
• Keep walkways clear (minimum 600mm clearance is ideal)

Want a layout tailored to your space? Our Pre-Project Planning helps lock this in early.

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Budget-friendly small bathroom renovation tips

Wondering if it’s possible to do a budget small bathroom renovation in Sydney? Absolutely - with the right planning.

Tips to save without sacrificing style:

• Use in-stock materials to avoid delays and high shipping fees
• Keep existing plumbing where it is
• Choose ceramic tiles over stone for a cost-effective finish
• Mix high-end and budget pieces — e.g. invest in a quality shower screen, but opt for a simpler vanity

Kastell can help you refresh a small bathroom under $15,000 depending on the scope. Learn more in our Budgeting & Timelines guide.

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The best small bathroom trends in 2025

Looking to blend function and style? Here are our favourite small bathroom trends we’re seeing in Sydney:

• Wall-hung fixtures (vanities, toilets) for more visual space
• Neutral palettes with warm timber, white, and soft grey tones
• Frameless glass for modern, minimal styling
• Tech touches like heated towel rails and smart lighting
• VJ panelling as an alternative to wall tiles for texture and warmth

These trends aren’t just aesthetic - they’re practical choices for small bathrooms that still need to work hard.

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Planning your small bathroom renovation with Kastell

At Kastell, we believe every space no matter the size deserves smart design and quality execution. Our team works with clients across the Lower North Shore and greater Sydney to deliver functional, timeless small bathroom renovations.

Why choose Kastell?

• Licensed, insured, and experienced in small-space renovations
• Transparent pricing and clear timelines
• Full-service from design to handover

Explore our Bathroom Renovation page or Book a Consultation to get started.

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Thinking about renovating your small bathroom?

Contact Kastell today for expert advice, design ideas, and a tailored small bathroom renovation that fits your budget, your lifestyle, and your space.

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Explore more:

• How Much Does a Bathroom Renovation Cost in Sydney?
• How Long Does a Bathroom Renovation in Sydney Take?
• Our Processes
• Our Customers – Downsizers
• Our Customers – Family Renovators

Helpful Resources:

• NSW Fair Trading – Renovation Compliance
• HIA Bathroom Renovation Guideline