A full bathroom renovation in Sydney isn’t a one-trade job—it’s a coordinated process involving multiple licensed professionals working in a specific sequence. Understanding who is involved helps you plan better, avoid delays, and ensure your renovation meets NSW compliance standards.
Here’s a clear breakdown of the essential trades required for a complete bathroom renovation and what each one does.
🧱 1. Demolition Specialists (Strip-Out Crew)
The first step is removing the old bathroom.
They handle:
Breaking up old screeds and finishes
Safe disposal of construction waste
Preparing the space for new work
👉 In some cases, they also identify hidden issues like water damage or asbestos.
🚰 2. Licensed Plumber
The plumber is one of the most critical trades in any bathroom renovation.
They are responsible for:
Hot and cold water supply lines
Drainage and waste systems
Toilet, shower, and basin installation
Waterproofing pre-checks (in some workflows)
Backflow prevention (especially for bidets or smart toilets)
👉 All plumbing work in NSW must comply with AS/NZS 3500 standards.
⚡ 3. Licensed Electrician
Bathrooms are high-risk electrical environments, so all electrical work must be done by a licensed electrician.
They install:
Lighting (ceiling, mirror, LED features)
Exhaust fans and ventilation systems
Power points (RCD-protected)
Heated towel rails and underfloor heating systems
Smart toilet or bidet power connections
👉 Electrical zoning rules apply in wet areas.
🧪 4. Waterproofing Specialist
Waterproofing is one of the most important stages in any renovation.
They handle:
Applying waterproof membranes to floors and walls
Sealing wet zones (shower, bath, vanity areas)
Ensuring compliance with AS 3740 standards
Preparing certification documentation
👉 This stage must be completed correctly before tiling begins.
🧱 5. Tiler
The tiler brings the bathroom to life visually.
They are responsible for:
Floor and wall tiling installation
Shower niches and feature walls
Grouting and sealing joints
Ensuring correct slope for drainage
👉 Precision here impacts both appearance and water flow performance.
🪚 6. Carpenter / Joiner
Carpentry work supports structure and cabinetry.
They handle:
Vanity installation or custom cabinetry
Wall framing adjustments (if needed)
Door adjustments or replacements
Shower hob or niche framing
👉 In modern bathrooms, floating vanities are often part of this scope.
🪞 7. Glazier (Shower Screen Installer)
Once tiling is complete, glass installation is next.
They install:
Frameless or semi-frameless shower screens
Custom glass panels
Mirrors (in some cases)
👉 Measurements must be precise, so this is always done after tiling.
🎨 8. Painter
Painting is one of the final finishing trades.
They complete:
Walls and ceilings (non-tiled areas)
Touch-ups after installation
Moisture-resistant bathroom paint application
👉 Painting always comes after tiling and fit-off.
🚿 9. Bathroom Fitter / Final Fit-Off Specialist
This is the final stage of the renovation.
They install:
Tapware and mixers
Toilet and accessories
Vanity basins and sinks
Mirrors and towel rails
Final sealing and adjustments
👉 This stage ensures everything is functional and finished.
🧠 Who Coordinates All These Trades?
In most Sydney renovations, coordination is handled by:
A builder or bathroom renovation company, or
👉 Without coordination, delays between trades are one of the biggest causes of renovation overruns.
⚠️ Why Trade Sequencing Matters
Each trade depends on the previous one being completed correctly:
Plumber → Electrician → Waterproofing → Tiling → Fit-off
If one step is delayed, the entire project timeline shifts.
🧠 Key Takeaway
A full bathroom renovation in Sydney typically involves:
👉 Demolition crew
👉 Plumber
👉 Electrician
👉 Waterproofing specialist
👉 Tiler
👉 Carpenter/joiner
👉 Glazier
👉 Painter
👉 Final fit-off installer
Each plays a critical role in ensuring your bathroom is safe, compliant, and finished to a high standard.
What’s Next?
If you’re planning a bathroom renovation, understanding the trades involved helps you avoid delays and ensures every stage is completed in the correct order.
