Planning a bathroom renovation in Sydney involves more than choosing tiles and fixtures. To ensure a smooth, efficient, and compliant renovation, it’s critical to follow the correct sequence of work. Whether you’re updating a compact apartment in Chatswood, modernising a terrace in Surry Hills, or refurbishing a large family bathroom in Pymble, a structured approach prevents costly mistakes, delays, and compliance issues.
As a kitchen, bathroom and home renovation business in Sydney, we’ve managed hundreds of projects across the North Shore, Inner West, Eastern Suburbs, and Hills District. Over the years, we’ve identified the most effective step-by-step sequence that balances efficiency, regulatory compliance, and quality finishes. Below is a comprehensive guide for homeowners looking to plan a bathroom renovation in Sydney.
1. Initial Planning and Design
Before any physical work begins, thorough planning is essential. This stage determines the budget, design, and regulatory requirements.
Key Steps:
Assess Your Goals: Determine whether this is a cosmetic refresh or a full-scale structural renovation. For example, North Shore families in Wahroonga or Castle Hill may focus on accessibility, while Inner West apartments in Marrickville might prioritise modern design.
Set a Budget: Include costs for materials, labour, plumbing, electrical, waterproofing, and contingencies (10–15% is recommended). Narrow apartments in Green Square may have tighter budgets, whereas larger homes in Mosman or Bellevue Hill often allow for premium finishes.
Select Fixtures and Finishes: Choose tapware, vanities, tiles, showers, and lighting before demolition. Lead times for custom joinery or premium products should be factored in.
Check Regulations: Confirm NSW plumbing, waterproofing, electrical, and building codes. Apartments require strata approval for in-wall plumbing modifications, common in Rhodes or North Sydney.
Hire Licensed Professionals: Engage a renovation specialist to coordinate all trades, ensure compliance, and provide accurate project timelines.
Proper planning prevents delays and ensures trades are scheduled efficiently.
2. Demolition
Once designs and approvals are in place, demolition is the next step.
Typical Demolition Work Includes:
Removing tiles from walls and floors
Dismantling vanities, toilets, showers, and bathtubs
Disconnecting plumbing and electrical connections
Careful disposal of waste, including asbestos if present (common in homes built before 1990, e.g., Balmain or Leichhardt terraces)
Tip: Protect surrounding areas with dust sheets and temporary barriers, especially in high-density apartments or terrace homes with shared walls.
3. Structural and Plumbing Modifications
Before waterproofing or tiling, any structural changes or plumbing relocations must be completed.
Plumbing Adjustments:
Moving toilets, showers, or basins
Installing new hot and cold water lines
Adjusting drainage and floor waste positioning to meet AS 3740 and NCC fall requirements
Structural Modifications:
Framing for wall-hung toilets or vanities
Enlarging door openings
Adjusting ceiling heights if required
In older terraces in Paddington or Pymble, it’s common to encounter non-standard subfloor or wall structures. Early assessment ensures modifications are achievable.
4. Electrical Work
Bathrooms are wet areas, so electrical work must be installed prior to waterproofing and tiling.
Key Electrical Tasks:
Installing RCD-protected circuits
Positioning downlights, exhaust fans, and heaters
Setting up wiring for mirror lighting and power points (following wet-zone clearances)
Tip: Waterproof LED lights should meet IP65 standards above showers, especially in apartments in North Sydney or CBD units where building codes are strict.
5. Waterproofing
Waterproofing is critical for compliance and long-term durability.
Requirements:
Shower walls must be waterproofed to a minimum of 1800mm high
Floors must be fully waterproofed
Upturns of 150mm on walls and penetrations must be sealed
Must comply with AS 3740 standards
Licensed waterproofers should provide a compliance certificate. This step must be completed before tiling or installing any fixtures.
6. Wall and Floor Preparation
After waterproofing, walls and floors are prepared for tiles or other finishes.
Key Tasks:
Leveling floors and correcting falls toward drains (minimum 1:80, maximum 1:50)
Installing cement backer boards for tiled walls
Priming or treating surfaces for paint or wall panels
Proper preparation ensures tiles adhere properly and prevents cracking or water damage.
7. Tiling and Surface Finishes
With walls and floors ready, tiling and other finishes can be installed.
Best Practices:
Install large-format tiles to create the illusion of space in narrow bathrooms (common in St Leonards or Chatswood apartments)
Maintain consistent grout lines for visual continuity
Seal tiles and grout to improve durability in humid Sydney conditions
Other finishes such as feature walls, stone panels, or waterproof wallboards are installed at this stage.
8. Fixture Installation
Once tiling and surfaces are complete, fixtures are installed.
Typical Fixtures Include:
Shower screens and doors
Towel rails and grab bars
Tip: Wall-hung toilets or floating vanities are especially useful in narrow apartments or small bathrooms in Ashfield or Zetland.
9. Plumbing and Electrical Connections
At this stage, licensed trades reconnect plumbing and electrical systems:
Tapware and shower fittings
Toilet cistern and flush systems
Downlights, fans, and heaters
All connections must be tested for leaks, proper water pressure, and electrical safety.
10. Final Touches
The finishing stage ensures the bathroom is fully functional and visually appealing.
Tasks Include:
Installing mirrors, shelving, and accessories
Painting or touch-ups on walls
Applying sealant to edges of tiles, vanities, and showers
Final cleaning and polishing
At this stage, attention to detail is critical, especially for high-end renovations in Mosman, Bellevue Hill, or Pymble.
11. Compliance Checks and Handover
Before handing the bathroom back to the homeowner, ensure:
Waterproofing compliance certificates are provided
Plumbing and electrical works are certified
Floor falls, drainage, and ventilation meet standards
Strata or council approvals are documented (if required)
This guarantees the renovation is not only beautiful but legally compliant, safe, and durable.
12. Post-Renovation Tips
Maintain fixtures regularly to prolong lifespan
Check silicone seals and grout annually
Keep drains clear to prevent water damage
Ensure proper ventilation to minimise mould
In Sydney’s humid climate, especially in North Shore and Eastern Suburb homes, regular maintenance preserves the quality of your investment.
Common Mistakes to Avoid in Bathroom Renovation Sequencing
Skipping planning and design: Leads to layout inefficiencies and extra costs
Not engaging licensed professionals early: May cause compliance issues
Waterproofing after tiling: Major source of leaks
Installing fixtures before tile preparation: Can damage tiles and lead to misalignment
Neglecting ventilation: Promotes mould and reduces lifespan of finishes
Following the correct sequence prevents these issues and keeps your renovation on time and budget.
Why Working with Professionals Matters
Sydney’s building codes, strata requirements, and complex plumbing systems make professional guidance essential. A trusted kitchen, bathroom and home renovation business ensures:
Compliance with NSW regulations and Australian Standards
Correct sequencing of trades and tasks
Efficient project management
High-quality materials and workmanship
Minimal disruption to your home
Whether you’re renovating a compact apartment in Chatswood or a large family bathroom in Wahroonga, professional planning maximises value and reduces stress.
Final Thoughts
The best sequence of work for a bathroom renovation in Sydney is:
Planning and design
Demolition
Structural and plumbing modifications
Electrical rough-in
Waterproofing
Wall and floor preparation
Tiling and surface finishes
Fixture installation
Plumbing and electrical connections
Final touches
Compliance checks and handover
Following this order ensures a smooth, compliant, and aesthetically pleasing renovation that stands the test of time.
