10 Bathroom Renovation Tips for Melbourne Homeowners

Renovating a bathroom in Melbourne is one of the most complex home improvement projects you can undertake. It involves more licensed trades, more compliance requirements and more opportunity for costly mistakes than almost any other room in the house.

Get it right and you have a bathroom that adds value, improves daily life and lasts decades. Get it wrong and you're dealing with water damage, mould, structural problems and a renovation that needs to be redone.

Here are 10 things every Melbourne homeowner must know before starting a bathroom renovation.

1. Waterproofing is Non-Negotiable — and Legally Required

Waterproofing is the single most important part of any bathroom renovation. It must be:

• Completed by a licensed waterproofer (not a tiler, not a handyman)
• Applied to all wet areas including shower floor, shower walls to at least 1800mm height, and the entire bathroom floor in some configurations
• Inspected by a building surveyor before any tiles go down
• Compliant with AS 3740 — the Australian standard for waterproofing in wet areas

This is not optional. It is a legal requirement under Victorian building regulations.

What happens when waterproofing is done poorly or skipped:

• Water penetrates walls and floors over months and years
• Mould grows inside wall cavities — invisible until serious damage is done
• Structural timber rots
• The entire bathroom must be stripped out and redone at your full expense

Ask your builder to show you the waterproofing inspection certificate before tiling begins. If they can't produce one, stop work immediately.

2. Keep Plumbing in the Same Place if You Can

Moving plumbing in a bathroom is one of the fastest ways to blow your budget. The moment you relocate the toilet, shift the shower to a different wall, or move the vanity to the opposite side of the room, you're paying a licensed plumber for significant additional work — often $3,000–$8,000 more than a like-for-like renovation.

If your current layout works, keep it. Redirect that money to better tiles, quality tapware and a frameless shower screen — decisions that will have far more impact on the finished result than a reconfigured layout.

If you do need to move plumbing, get a specific cost for the plumbing variation before committing. Don't let it be buried in a general contingency figure.

3. Tile Selection Makes or Breaks the Room

Tiles are the single biggest visual element in any bathroom and the decision most homeowners underestimate the importance of. The right tiles can make a small bathroom feel spacious and luxurious. The wrong tiles make an expensive renovation look cheap.

Key tile decisions:

• Size: Large format tiles (600x600mm and above) reduce grout lines, make rooms feel bigger and look more contemporary. They cost more to supply and lay, but the visual impact is significant.
• Colour: Light, neutral tones make bathrooms feel larger and brighter. Dark tiles are striking but require more maintenance and can feel oppressive in small spaces.
• Finish: Matte tiles are popular and hide watermarks. Gloss reflects light and makes rooms feel brighter. Textured tiles are better for floors (slip resistance).
• Feature tiles: A well-chosen feature wall or niche tile can completely elevate a bathroom. A poorly chosen one can dominate the space in the wrong way.
• Grout colour: Often an afterthought — but grout colour dramatically affects the final look. Dark grout on light tiles creates strong lines. Matching grout to tiles creates a seamless feel.

Lock in your tile selections before work starts. Trades cannot proceed without materials on site.

4. Invest in a Quality Shower System

The shower is the most used element of any bathroom — typically used twice a day, every day. It is not the place to cut costs.

What makes a quality shower:

• Shower mixer and head: Quality tapware from Caroma, Methven, Astra Walker or Brodware lasts decades and delivers consistent performance. Cheap tapware drips, corrodes and needs replacing within 5–10 years.
• Water pressure: Confirm your home's water pressure before selecting a shower head. Some high-flow heads require minimum pressure to perform properly.
• Frameless shower screen: A frameless screen makes any bathroom feel more open and is far easier to clean than framed alternatives. Budget
  ,500–$3,500 for a quality frameless screen.
• Shower niche: A tiled niche for shampoo and soap is far better than a shower caddy. Plan its position before waterproofing begins — it must be waterproofed as part of the wet area.

5. Plan Storage From the Start — Not as an Afterthought

Bathroom storage is consistently underestimated in renovation planning and consistently regretted afterwards. By the time you're tiling, it's too late to reconfigure storage without significant cost.

Plan these storage elements before work starts:

• Shaving cabinet / mirror cabinet: Recessed versions require a cavity in the wall — this must be planned before framing. Surface-mounted versions can be added later but look less integrated.
• Vanity drawers vs doors: Drawers are far more functional than under-sink cabinet doors. Spend the extra