Independent guide — not a contractor. Planning information only. Confirm licences, waterproofing, and quotes with qualified trades and the relevant state authority.
| Scope | What is usually in | Planning band (AUD) | Assumptions |
|---|---|---|---|
| Cosmetic refresh | Paint, tapware, shower screen, vanity swap if plumbing lines up, accessories | About $8,000–$18,000 | No new waterproofing; tiles stay if sound |
| Mid-range same footprint | Strip, re-waterproof, new tiles, vanity, toilet, shower, lighting | About $15,000–$35,000 | Typical 3-piece ensuite or family bath; wastes stay |
| Full gut + fixture moves | Moved shower/bath/vanity, new wastes, possibly in-wall cistern, heated floor | About $25,000–$50,000+ | Licensed plumbing + waterproofing redo; metro |
| Luxury / expanded wet area | Space taken from a robe or bedroom, skylight, slab walls, freestanding bath | About $45,000–$80,000+ | May need building approval; structural and waterproofing risk is higher |
Not quotes. Waterproofing, waste locations, and access (upstairs, occupied house) move the number more than tap chrome. Confirm with licensed trades.