A small bathroom doesn’t have to feel like a compromise. Some of Melbourne’s most beautiful bathroom transformations happen in spaces under 5 square metres. It just takes smart planning to get there. Whether you’re working with a tight inner-city ensuite or a compact family bathroom in an older home, the decisions you make before a single tile comes off the wall will determine how good the finished result really is.

Here are 10 practical tips to help you plan your small bathroom renovation with confidence.

Quick Takeaways

• Set a realistic budget before you fall in love with any fixtures. Melbourne small bathroom renovations typically range from $45,000to $58,000, depending on scope and finishes
• Keep your plumbing in place where possible to control costs
• Space-saving design choices make a bigger visual difference than most people expect
• Light colours, reflective surfaces and strategic mirrors can make a small bathroom feel genuinely spacious
• Working with end-to-end renovation specialists (design through to build) reduces the risk of costly miscommunication between trades

1. Set Your Budget Before You Start Designing

It’s easy to fall in love with a particular tile or a freestanding bath, only to discover it blows the entire budget before you’ve factored in waterproofing, plumbing or labour.

In Melbourne, a small bathroom renovation typically costs between $45,000 and $58,000 for a standard renovation, with budget cosmetic refreshes starting around $20,000–$30,000 and full layout changes pushing above $60,000. Labour alone accounts for 40–50% of total costs, so it pays to know your ceiling before you begin selecting finishes.

A good rule of thumb is to set aside a 10–15% contingency on top of your core budget for unexpected issues.

2. Think Carefully Before Moving Plumbing

Relocating your toilet, shower, or basin adds high cost and complexity to any renovation. It requires concrete cutting, new drainage runs and additional plumbing labour. These expenses can quickly add $7,000–$12,000 or more to your project.

That said, in a small bathroom, sometimes a layout rethink is exactly what unlocks the space. If the current layout is inefficient, it may well be worth the investment. The key is making that decision during the planning stage, not midway through demolition.

3. Choose Space-Saving Fixtures

In a small bathroom, every centimetre counts. The right fixtures can make a compact space feel genuinely functional rather than cramped.

A few choices that consistently work well:

• Floating vanities: mounting the vanity off the floor exposes the floor beneath it, which creates a visual sense of more space and also makes cleaning much easier
• In-wall cisterns: these tuck the cistern inside the wall, giving you a sleek, slim toilet profile and reclaiming 15–20cm of floor depth
• Compact or wall-hung toilets: shorter projections from the wall free up floor space in front
• Sliding or pocket doors: swing doors can take up a surprising amount of usable floor area in a small bathroom; a cavity slider or pocket door eliminates that entirely

These are practical choices that can change how a bathroom feels to use every day.

4. Maximise Storage With Custom Cabinetry

Storage is one of the biggest frustrations in a small bathroom. When bench space is limited and there’s nowhere to put things, the room can quickly feel cluttered, no matter how well it’s designed.

The most effective solution is custom bathroom cabinetry designed specifically for your space. A good bathroom cabinet maker can design drawers that wrap around the waste trap under the basin (rather than wasting that space), incorporate pull-out organisers, and build into awkward corners that off-the-shelf vanities simply can’t use.

Wall niches are another excellent option. They don’t project into the room at all, keeping the footprint tight while providing practical storage right where you need it.

5. Select Materials That Work Hard for the Space

In a small bathroom, your material choices do double duty. They need to look good and actively help the space feel larger and brighter.

A few principles worth following:

• Light, neutral tones (whites, soft greys, warm beiges) reflect light and open up the room.
• Large-format tiles with minimal grout lines reduce visual busyness, making small spaces feel larger.
• Gloss or semi-gloss finishes on tiles and cabinetry bounce light around the room.
• Durable, water-resistant materials. Proper waterproofing and high-quality finishes in the shower and bath areas are non-negotiable for longevity. Australian Standard AS 3740 sets the minimum requirements for waterproofing.

6. Plan Your Layout Properly

This is the most important planning step of all. A small bathroom with a well-thought-out layout can outperform a much larger room that’s been poorly arranged.

Think about:

• Where you need to move freely (in front of the vanity, stepping out of the shower)
• Where doors open and whether they’ll ever clash with a person or another fixture
• Whether the shower and toilet placement gives adequate privacy if someone walks in
• Whether your storage is accessible without awkward reaching or bending

If you’re considering a more significant bathroom renovation, it’s worth working with a designer who can model a few layout options before any decisions are locked in. Getting the layout wrong is expensive to fix once the walls are tiled.

7. Use Lighting Creatively

Lighting transforms a small bathroom more than almost any other element. A poorly lit bathroom feels cramped and dull; a well-lit one feels open and polished.

Aim for multiple light sources rather than relying on a single overhead fitting:

• Recessed downlights provide clean, even overhead illumination
• Vanity lighting (above or beside the mirror) eliminates the harsh shadows that a single overhead light creates on your face
• LED strip lighting behind a mirror or under a floating vanity adds depth and makes the room feel bigger
• A feature pendant can add a point of difference and personality to a small space

Also consider maximising natural light where possible. A frosted skylight or window can make a dramatic difference in a bathroom that previously relied entirely on artificial light.

8. Use Mirrors Strategically

Mirrors are one of the most effective and cost-efficient tools in a small bathroom renovation. A mirror effectively doubles whatever it reflects, creating the impression of a room that’s twice as wide or deep.

An inset mirrored cabinet offers the visual benefit of a large mirror and practical storage behind it. Full-height mirrors or wide mirror panels above the vanity are also very effective. The key is to position them so they reflect light from the light sources and the most open parts of the room, not a wall or the back of a door.

9. Don’t Overlook Ventilation

Ventilation is one of those things that’s easy to underestimate during planning and deeply regretted later. A poorly ventilated bathroom develops mould problems that are expensive and unhealthy to deal with. In a small, enclosed space, moisture builds up quickly.

If your current exhaust fan is undersized or poorly positioned, the renovation is the right time to upgrade it. Look for a fan with an adequate cubic-metre-per-hour rating for your bathroom size, position it close to the shower (where most of the steam is generated), and make sure it vents directly to the outside rather than into the ceiling cavity.

10. Work With End-to-End Specialists

A small bathroom renovation involves a surprising number of moving parts, including design, waterproofing, tiling, plumbing, electrical, cabinetry, and fixtures. When each of these is managed by a different party with no clear project oversight, delays and miscommunication are almost inevitable.

Working with a specialist who manages the entire process keeps everything coordinated and accountable. It also means your designer understands the practical constraints of the build, so the design you see in a mood board is actually achievable within your budget and timeline.

If you’re also considering an ensuite renovation alongside a main bathroom update, having one team handle both projects often produces a more cohesive result and better value.

Ready to Start Planning?

The team at Mint Kitchen Group has been designing and renovating bathrooms across Melbourne for over 30 years, with multiple HIA and KBDI awards recognising the quality of our work. We manage everything from the initial design consultation right through to the final fit-out, so you have one point of contact and one team accountable for the outcome.

Visit one of our Melbourne showrooms in Burwood, Moonee Ponds, Richmond or South Melbourne to talk through your project, or get in touch online to arrange a consultation.