Costs & Budget
Bathroom Renovation Cost by Suburb: Hills District vs Western Sydney
By Remodler · · 11 min read
The most common question we get is also the hardest one to answer over the phone: what does a bathroom renovation cost? The honest answer is that it depends on the house, not the postcode — but because houses of a similar era cluster by suburb, suburb turns out to be a decent shortcut.
This is what we are actually quoting across the Hills District and Western Sydney in 2026, what is inside those numbers, and which decisions move them the most. No fixed prices before a measure, because a number given without seeing the room is a number that changes later.
The 2026 ranges, suburb by suburb
These cover a full strip-out and rebuild: demolition and disposal, plumbing and electrical, substrate, licensed waterproofing, screed and tiling, vanity, toilet, shower screen, tapware, protection of your floors and hallways, and a final clean.
| Suburb | Area | Main bathroom | Ensuite / small bathroom |
|---|---|---|---|
| Castle Hill | Hills District | $24,000 – $38,000 | $18,000 – $26,000 |
| Kellyville | Hills District | $23,000 – $35,000 | $17,000 – $25,000 |
| Baulkham Hills | Hills District | $22,000 – $34,000 | $17,000 – $25,000 |
| Quakers Hill | Western Sydney | $22,000 – $33,000 | $16,000 – $24,000 |
| Seven Hills | Western Sydney | $20,000 – $32,000 | $15,000 – $23,000 |
| Blacktown | Western Sydney | $20,000 – $31,000 | $15,000 – $22,000 |
Swipe the table to see all columns.
Where the money actually goes
Across every job we price, the split is remarkably consistent. If a quote deviates a long way from this, it is worth asking which line has been trimmed.
- Of an honest quote is labour
- ~50%Of an honest quote is labour
- Typical time on site
- 3–4 wksTypical time on site
- Waterproofing standard we build to
- AS 3740Waterproofing standard we build to
| Line item | Share | What it buys |
|---|---|---|
| Labour and trade time | 45–55% | Strip-out, rough-in, sheeting, waterproofing, tiling, fit-off |
| Fixtures, tapware and glass | 18–25% | Vanity, toilet, bath, screen, tapware suite |
| Tiles, stone and screed | 12–18% | Finishes and the bed they sit on |
| Waste, protection, certificates | 5–8% | Skips, floor protection, waterproofing certificate |
| Contingency / remediation | 0–10% | Asbestos, drainage repair, rotten substrate |
Swipe the table to see all columns.
The three decisions that move your price most
Homeowners usually assume tiles are the big lever. They are not. Here is what actually shifts the total, in order.
1. Moving the shower waste, toilet or vanity
Keeping fixtures where they are keeps the drainage untouched. Moving them means chasing a slab or reworking under a timber floor, and on older Western Sydney homes it can also mean replacing brittle earthenware line while it is open.
2. Stone, tapware and glass selections
This is the discretionary part, and it can swing $6,000–$10,000 on its own. A stone top, a full frameless screen and a premium tapware suite are lovely; a stone-look top, semi-frameless glass and a solid mid-range suite look almost the same from the doorway.
3. What the house hides
Pre-1990 homes carry asbestos risk, no membrane, and sometimes soft substrate. We test and inspect before quoting so it appears as a line item rather than a variation halfway through.
How to compare three quotes properly
Getting three quotes only helps if they describe the same job. This is the checklist we tell homeowners to use, including on our own quote.
- Is waterproofing listed as licensed work to AS 3740, with a certificate at handover?
- Are tapware, vanity, toilet and screen listed by model, or just as an allowance?
- Is rubbish removal, skip hire and floor protection included or extra?
- Who pays for asbestos testing, and what happens if it is positive?
- What are the payment stages, and is there a deposit larger than 10%?
- Is there a written program with a start and finish date?
Budgeting realistically for your suburb
If you are in Castle Hill, Kellyville or Baulkham Hills, plan around the mid-to-upper part of the Hills range if your bathroom is upstairs or you are doing the main and ensuite together. If you are in Blacktown, Seven Hills or Quakers Hill, plan around the middle of the range and hold a small contingency for pre-1990 surprises.
In every suburb the same rule applies: protect the labour and the waterproofing, and flex the finishes. That is what leaves you with a bathroom that still looks and works well in fifteen years.