Small bathroom renovation cost in Melbourne

By the WTD team · Updated July 2026

A small Melbourne bathroom — the typical 3–4 m² apartment or second bathroom — runs $10,000 to $16,000 for a full renovation. The surprise for most owners is how little it drops below a standard bathroom: the fixed costs barely shrink when the room does.

Quick answer — small bathroom renovation cost in Melbourne

Why small bathrooms don't cost proportionally less

1. The fixed costs don't scale down

Waterproofing a 3 m² floor takes nearly the same call-out, materials and cure time as 7 m². Your plumber, tiler and electrician all charge a day rate that doesn't care how small the room is, and demolition, rubbish removal and site set-up are flat costs. On a small bathroom these fixed items make up a bigger slice of the total — which is why halving the floor area only trims maybe 20–25% off the price, not half.

2. Small rooms cost more per square metre to tile

Tight spaces are slower to work in. There are more cuts around the toilet, vanity and shower niche per square metre, more edges, and less room for two trades to work at once. Tiling that runs $80–$100/m² in a large bathroom often lands at $100–$140/m² in a compact one.

Where the money goes in a small Melbourne bathroom

On a typical $13,000 small-bathroom reno the rough split is: trades labour 35–40%, tiles and tiling ~20%, fixtures and fittings (vanity, toilet, screen, tapware) ~25%, waterproofing 6–8%, and demolition plus rubbish around 8%. Add a 10% contingency — in older inner-Melbourne terraces and 1970s walk-up apartments, lifting old tiles routinely exposes rot, failed waterproofing or asbestos-backed sheeting that has to be made good.

Itemised example — Brunswick apartment, 3.2 m²

Renovating a small Melbourne bathroom on a budget

The fastest way to keep a small bathroom cheap is to not move anything. Leaving the toilet, vanity and shower where they are avoids relocating water and waste pipes — the single biggest discretionary cost, worth $1,500–$4,000. From there: a cosmetic refresh (paint, re-grout, new tapware, new vanity and toilet, keeping sound tiles) lands at $4,000–$8,000 and skips the most expensive trades entirely. If you are re-tiling, choosing a mid-range porcelain over designer tiles and keeping to simple straight-lay instead of herringbone or full-height feature walls saves both on materials and on the tiler's hours. What you should never cut is waterproofing — it's 6–8% of the job and the one failure that costs you the whole room again in two years.

What you get at each price point

The same 3–4 m² room buys very different work depending on budget. At $4,000–$8,000 you're refreshing what's there — surfaces, fittings, tapware, same tiles and layout. At $10,000–$14,000 you're stripping to the studs and rebuilding: new waterproofing, new tiles floor-to-ceiling, new vanity, toilet and screen, same layout. At $14,000–$20,000 you're doing all of that plus moving fixtures or reworking the layout, which pulls in extra plumbing and often re-sheeting walls. The jump from refresh to full reno is steep because the moment you lift the old tiles you trigger waterproofing and trade minimums that don't care how small the room is.

Worked example — budget refresh, 3 m² second bathroom:

That's the floor for a bathroom that looks renovated without being rebuilt — no new tiles, no waterproofing, no layout change. The moment any of those three enter, you're into the $10k+ band.

Frequently asked questions

How small is a "small" bathroom in Melbourne?

Most renovators class anything under about 4 m² as small — typically an apartment bathroom, a powder room, or a second or kids bathroom in a freestanding home. The standard main bathroom in a Melbourne house is usually 6–8 m².

Can I renovate a small Melbourne bathroom for under $10,000?

Only as a cosmetic refresh — paint, re-grouting, new tapware, a new vanity and toilet, keeping the existing tiles and layout. The moment you strip back to the studs and re-tile, waterproofing and trade minimums push a full small reno to $10,000–$14,000.

How long does a small bathroom renovation take?

Usually 2–3 weeks for a full strip-and-replace, even though the room is small — the schedule is driven by trade sequencing and waterproofing cure time, not floor area. A cosmetic refresh can be done in a few days.

Does keeping the same layout save much?

Yes — leaving the toilet, vanity and shower in their existing positions avoids moving water and waste pipes, which can save $1,500–$4,000. Relocating fixtures is the single biggest discretionary cost in a small bathroom.

Why did my quote jump after demolition?

In older Melbourne terraces and walk-up apartments, removing old tiles often uncovers rotten timber, failed waterproofing or asbestos-backed sheeting that must be remediated. A 10% contingency on a small bathroom is sensible, 15% on anything pre-1990.

What's the cheapest way to renovate a small bathroom in Melbourne?

A cosmetic refresh that keeps the existing tiles and layout — new tapware, vanity, toilet, paint and a re-grout — from around $4,000. You skip waterproofing and tiling, which are the two costs that push a full reno past $10,000.

Can I renovate a small bathroom myself?

Some of it — demolition, painting, fitting a vanity. But waterproofing must be done by a licensed applicator and certified to AS 3740 in Victoria, and plumbing and electrical work is legally licensed trades only. DIY on the wet-area waterproofing is the classic false economy that voids insurance if it leaks.

How much to just replace the shower in a small Melbourne bathroom?

A like-for-like screen and fittings swap runs a few hundred to about $1,500. Re-tiling the recess and re-waterproofing the shower floor is a bigger job — $2,500–$5,000 — because it re-triggers waterproofing on that zone.