Costs · Bathroom
Bathroom renovation costs in Perth 2025 — what's realistic
Ask five Perth renovation companies for a bathroom quote and you'll get five very different numbers — sometimes ranging from $14,000 to $45,000 for what sounds like the same job. This guide explains why.
Perth bathroom renovation cost ranges 2025
For a standard Perth bathroom (5–8 m²), full gut and replace. Reflects Perth's 1.18× regional multiplier over HIA national benchmarks.
Budget
$8k–$14k
Builder-grade fixtures, ceramic tiles, acrylic shower
Mid-range
$14k–$28k
Porcelain tiles, semi-frameless shower, stone benchtop vanity
Premium
$28k–$50k+
Natural stone, freestanding bath, custom joinery, heated floors
Full cost breakdown — mid-range Perth bathroom (7 m²)
| Item | Cost range |
|---|---|
| Demolition and waste removal | $1,200–$2,000 |
| Waterproofing (AS 3740 compliant) | $900–$1,800 |
| Tiling (floor and walls) | $3,000–$6,500 |
| Vanity, tapware and accessories | $1,500–$4,000 |
| Shower screen or bath | $1,200–$3,500 |
| Toilet | $400–$1,200 |
| Plumbing labour | $2,500–$5,000 |
| Electrical (exhaust, lighting) | $800–$1,800 |
| Plastering and painting | $800–$1,500 |
| Total mid-range (7 m²) | $12,300–$27,300 |
Three trade licensing requirements you cannot skip in WA
Licensed plumber — Plumbers Licensing Act 1995 (WA): All plumbing work must be done by a licensed plumber. Unlicensed plumbing is a criminal offence with fines up to $10,000. Your plumber should issue a Certificate of Compliance — keep this for insurance and resale.
Licensed electrician — Electricity (Licensing) Regulations 1991 (WA): Installing or modifying exhaust fans, lighting circuits, heated floor thermostats, or any power points must be done by a licensed electrician. No exceptions.
Waterproofing — Australian Standard AS 3740: Waterproofing must comply with AS 3740 and must be applied by someone with the correct training. Non-compliant waterproofing typically fails within 5–10 years — the resulting damage costs far more than the original saving.
Does a bathroom renovation need a building permit?
For a standard bathroom renovation — tiling, new fixtures, new vanity, no walls moved — no building permit is required in WA. The absence of a permit doesn't mean the work is unregulated though. Your plumber and electrician still issue compliance certificates independently.
Common Perth bathroom budget blowouts to avoid
- Check for asbestos before demo: Perth homes built before 1990 commonly contain asbestos in wall sheeting and floor tiles. Inspection costs $250–$400. Licensed removal is required if found — budget $2,000–$8,000.
- Get a fixed-price contract.
- Don't change your mind mid-build: Variations are the most common cause of budget blowout.
- Ask specifically about waterproofing — some budget quotes use substandard membranes.
Get your bathroom estimate instantly
Enter your bathroom size and finish level — the calculator gives a Perth-adjusted cost range and checks permit requirements.
Use the calculator →
Sources
HIA 2025 Kitchens & Bathrooms Report · Plumbers Licensing Act 1995 (WA) · Electricity (Licensing) Regulations 1991 (WA) · Australian Standard AS 3740 — Waterproofing of wet areas · City of Gosnells — Additions and alterations · Building Commission WA