Ensuite renovation cost in Wollongong
An ensuite renovation in Wollongong typically costs $15,000 to $26,000 — around 20–30% below the equivalent main bathroom. The discount comes from size and scope, not from lower standards: the waterproofing, the certification and the trades are identical.
Quick answer — ensuite renovation cost in Wollongong
| Ensuite type | Typical cost |
|---|---|
| Compact ensuite (shower, toilet, single vanity) | $15,000–$19,000 |
| Standard ensuite (larger shower, double vanity) | $19,000–$26,000 |
| Premium ensuite (freestanding bath, stone, frameless) | $26,000–$40,000+ |
For comparison, the mid-range main bathroom band in Wollongong is $21,600–$37,800. The ensuite discount is real but narrower than most people assume.
Why an ensuite costs less — and by how much
Ensuites are typically 20–30% cheaper than main bathrooms, and almost all of that saving comes from three places. They are smaller, so tiling and demolition drop. They usually have no bath, removing a $1,625–$5,400 line entirely. And they carry fewer fixtures overall — often a single vanity instead of a double, one shower instead of a shower-over-bath arrangement.
What does not change: waterproofing must still comply with AS 3740, the plumbing rough-in still needs a licensed plumber, and the electrical still needs a licensed electrician with its own certificate. Those costs are close to identical to a main bathroom.
The complication nobody quotes for — you are working off a bedroom
Access and protection
Every tool, tile and bag of waste travels through your bedroom. Good trades will mask and floor-protect the route, but it adds set-up time each day, and it means the bedroom is effectively unusable for much of the program.
Shared walls and noise
An ensuite shares at least one wall with a sleeping space, which raises two issues a main bathroom rarely faces. Acoustic insulation in the shared wall is worth doing while the wall is open — it is inexpensive at that moment and impossible later. And if the toilet backs onto the bed head, consider relocating it while the plumbing is already open.
Ventilation is not optional
An ensuite vents moisture directly into a bedroom if the exhaust is undersized or ducted poorly. In the Illawarra's humidity this shows up as mould on the bedroom side of the shared wall within a season or two. Duct the exhaust to outside air — not into the roof cavity.
Line items for a $19,000 Wollongong ensuite
| Line item | Typical cost |
|---|---|
| Demolition and disposal | $1,075–$2,000 |
| Plumbing rough-in | $2,150–$3,800 |
| Waterproofing | $1,075–$2,400 |
| Tiling — floor and walls | $2,150–$4,500 |
| Vanity | $540–$2,400 |
| Shower screen | $865–$2,200 |
| Toilet | $430–$1,000 |
| Electrical, exhaust, heated towel rail | $1,200–$2,600 |
| Trades labour and making good | $4,000–$6,500 |
Adding a new ensuite where none exists
This is a different job with a different number. Creating an ensuite from scratch — stealing space from a bedroom or robe, running new drainage, and building new walls — typically runs $28,000–$45,000 in Wollongong, because you are adding structure, new plumbing runs to the existing stack, and often a window or mechanical ventilation. It may also trigger a development application depending on the scope and your council's requirements, which is worth confirming with Wollongong City Council before you plan around a timeline.
Frequently asked questions
How much does an ensuite renovation cost in Wollongong?
An ensuite renovation in Wollongong typically costs $15,000–$26,000. Ensuites are typically 20–30% cheaper than main bathrooms due to smaller size, fewer fixtures, and usually no bath.
Why is an ensuite not half the price of a main bathroom?
Because the fixed costs are the same. Waterproofing must still comply with AS 3740, the plumbing rough-in still needs a licensed plumber, and the electrical still needs its own certificate. Only tiling, demolition and fixture count scale down with the smaller room.
What does it cost to add a new ensuite in Wollongong?
Typically $28,000–$45,000, well above renovating an existing one. You are adding new walls, running new drainage to the existing stack, and providing ventilation. Depending on scope it may also require council approval, so confirm with Wollongong City Council early.
Do I need council approval for an ensuite renovation?
Renovating an existing ensuite within the same footprint generally does not require approval, but the waterproofing and plumbing work must be done by licensed trades and certified. Creating a new ensuite, moving drainage, or altering structure is a different matter — check with Wollongong City Council before committing to a timeline.
Should I insulate the wall between the ensuite and the bedroom?
Yes, while the wall is open. Acoustic batts in the shared wall cost very little at that stage and are effectively impossible to retrofit afterwards. It is the single most common regret we hear about ensuite renovations.
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