The Order of Trades in a Laundry Renovation: The Sequence That Decides Your Cost (Australia)

Last updated: 10 June 2026 · By Mossy Tariq, Founder — Property Blueprint Co.

A laundry looks like the simplest room in the house to renovate. It is four square metres, one bench, a tub, and a couple of appliances. So most homeowners treat it as a weekend job that a handful of trades can knock over in any order. Then the same eight trades who build a kitchen turn up — plumber, electrician, waterproofer, tiler, cabinetmaker, stone fabricator, painter, floor layer — and have to fit through a doorway in the correct sequence, one at a time, into a space the size of a large cupboard.

That is the part nobody plans for. A laundry has the longest trade list of any room relative to its size, and the order of trades — the sequence every one of them depends on — is fixed. The waterproofer cannot start until the sheeting is up. The tiler cannot start until the membrane is inspected. The cabinetmaker cannot start until the floor is tiled. Get the order wrong in a room this tight and there is nowhere for the work to go but backwards — a trade undoing the last trade's work to reach their own.

This is the order, set out before the first trade is booked, so the prepared homeowner can see the dependencies the trades already see. It is written for a standard Australian laundry renovation, and the principle holds whether a builder is coordinating the trades or you are.

A laundry is the smallest room with the longest trade list.
Its size is exactly why the order of trades is unforgiving.

The sequence below follows the same logic as the order of trades in a kitchen renovation, with one phase a kitchen does not have: the laundry is a wet area, and the waterproofing hold point in the middle of it cannot be skipped, rushed, or worked around.

Why the order of trades matters more in a room this small

Homeowners assume a small room is a forgiving room. The opposite is true. In a kitchen there is space for two trades to work at opposite ends on the same day. In a laundry there is not. The room can hold one trade at a time, which means the schedule is a single file queue, and a single trade arriving early does not just waste their own day — it blocks the doorway for everyone behind them.

The cost shows up the same way it does in any renovation: out-of-sequence work is the most expensive work, because it is either work that has to be undone or work that stalls a trade who still has to be paid for the call-out. Tile the floor before the waterproofing is signed off and the tiles come up. Install the cabinetry before the floor is tiled and the floor layer cannot finish under it. Book the plumber's fit-off before the benchtop is in and they measure against a surface that is not there. None of these are dramatic. They are small frictions — a call-out fee here, a half-day rework there — and in a room this small they have nowhere to hide. The same principle runs through the twelve phases of a renovation: sequence dictates cost, and a laundry concentrates that lesson into the smallest footprint in the house.

The correct order of trades in a laundry renovation

Every laundry renovation moves through these stages in this order. The planning and procurement phases run before anyone arrives on site; the on-site sequence begins at demolition.

1. Design and selections locked. Every selection — cabinetry, benchtop material, laundry tub, tapware, washing machine and dryer, splashback, flooring, tiling — is finalised before anything is ordered or demolished. The sequence downstream assumes nothing changes after this point.
2. Procurement and long-lead ordering. Cabinetry and appliances are ordered the day the contract is signed, because they set the timeline. Custom joinery runs six to ten weeks, and the dryer type determines whether an exhaust duct or a power circuit has to be roughed in.
3. Isolation and disconnection of services. The plumber and electrician make the existing laundry safe — water and power isolated — before any demolition begins.
4. Demolition and strip-out. The old laundry comes out. This is the phase where the original quote's exclusions become visible: rotted subfloor under a leaking tub, old wiring, drainage that does not meet current code.
5. Structural and framing changes. Any wall removal, new openings, or framing for a relocated tub or appliance cupboard happens now, while the space is open.
6. Plumbing and electrical rough-in (first fix). With the walls open, services are run to their new positions — the washing machine taps and drainage, the laundry tub waste, the floor waste, the dryer circuit, and the exhaust provision, all wired to AS/NZS 3000, the Wiring Rules. This phase decides where everything lives, and it happens once.
7. Wall lining and substrate preparation. Water-resistant sheeting goes to the walls and the floor substrate is prepared, because the waterproofing membrane needs a compliant surface to bond to. Standard particleboard flooring is no longer permitted as a wet-area substrate under the current standard.
8. Waterproofing and hold-point sign-off. The membrane is applied to the floor and wall junctions to AS 3740, and it must be inspected and certified before any tiling begins, because once the tiles are down the membrane cannot be verified. This is the hold point covered in the next section.
9. Floor and wall tiling. The floor is tiled to fall towards the floor waste, and any tiled splashback or wall area is laid against the waterproofed, signed-off substrate — never before it.
10. Painting. Walls and ceiling are painted while the room is clear and before the cabinetry goes in, with final touch-ups held back to the end.
11. Cabinetry installation. Base cabinets, overhead cupboards, and the tub cabinet are installed, levelled, and secured onto the finished floor. Nothing about a stone benchtop can begin until this is complete.
12. Benchtop templating. Once the cabinets are in and level, the stone fabricator templates — taking exact measurements, with the final tub and tapware positions on site for the cut-outs. The benchtop cannot be measured a day earlier.
13. Benchtop fabrication and installation. The stone is cut and finished over one to two weeks, then installed in a day. A laundry with a stone benchtop has the same fabrication pause a kitchen does, in a smaller room.
14. Plumbing and electrical fit-off (second fix). The tub and tapware, the washing machine taps, and the dryer connection are completed now that the benchtop is in. Licensed trades only.
15. Appliance installation and final trades. The washer and dryer are installed and connected — including the exhaust duct for a vented dryer or the placement clearances for a condenser or heat-pump unit — and the lighting and exhaust fan are finished.
16. Defects inspection and clean. Every element is checked — drainage falls, silicon, tile lippage, cabinet alignment, the floor waste running clear — before final payment is released, because the leverage to compel a fix disappears once it clears.

The waterproofing hold point: the laundry's non-negotiable pause

The phase that separates a laundry from a kitchen is waterproofing. A laundry is a wet area, and once a floor waste is installed — as it is in almost every laundry — the floor has to be waterproofed and graded to drain to that waste. Under the National Construction Code Housing Provisions and AS 3740, the floor must fall to the waste at a minimum of 1:80 and a maximum of 1:50, the membrane below the tiles must be graded to match, and the walls adjacent to the tub are waterproofed at the junctions. This is not a finish. It is the building envelope that stops water reaching the subfloor and the wall framing.

Because the membrane disappears under the tiles, it has to be verified while it is still visible. That makes it a hold point: the work stops, the membrane is inspected and certified, and only then does the tiler start. A homeowner who lets the tiler begin before the sign-off is gambling the most expensive failure in the room — a leak behind the tiles that is not discovered until it has rotted the floor, at which point the fix is not a repair, it is a rebuild of everything laid on top of it. The discipline here is identical to the one set out for bathroom waterproofing: the certificate is the artefact, and it exists before the first tile.

The decisions you have to lock before demolition day

The sequence only holds if every selection is locked before it starts, because a change made mid-sequence does not just cost the price of the change — it costs every dependent phase that has to wait for it. Three decisions in particular have to be final before demolition, because the trades downstream are built around them.

The first is the dryer. A vented dryer needs an exhaust duct roughed in through a wall or ceiling; a condenser or heat-pump dryer does not, but it needs its own clearances and a power circuit. Deciding the dryer type after the rough-in is choosing to reopen a wall. The second is the layout, specifically whether the tub, the washing machine taps, or the floor waste move — keeping them where they are keeps the rough-in small, and relocating them is a decision that has to be priced and committed before the walls open, not discovered at first fix. The third is the benchtop material, because a stone top sets the fabrication lead time and switching from laminate to stone after the programme is built adds two weeks the schedule did not have. Stone choice also narrowed after the Safe Work Australia engineered-stone prohibition took effect on 1 July 2024 — the surfaces most homeowners now specify are porcelain, sintered stone, or natural stone. These are the same locks that a complete laundry renovation checklist exists to enforce, in the order each one has to be made.

What goes wrong when the sequence breaks

A broken sequence in a laundry rarely announces itself as a disaster. It shows up as a series of small, billable frictions that the tight space makes worse. The tiler arrives before the waterproofing is signed off and either waits — billing for the day — or starts, and the membrane never gets certified. The cabinetmaker arrives before the floor is tiled and cannot set the base cabinets to the finished height. The plumber's fit-off is booked before the benchtop is in and has to come back a second time, a second call-out. In a room that holds one trade at a time, each of these does not just cost its own delay; it pushes every trade in the queue behind it.

Each of these is a few hundred dollars and a few days. On a single laundry they stack into thousands of dollars and weeks of delay — and none of them appear on the original quote, because the quote priced the work, not the coordination. This is the gap the prepared homeowner closes: the trades will each do their phase correctly, but no individual trade owns the sequence between them. On a project without a builder coordinating it, that ownership falls to the homeowner, which is exactly why the order has to be understood before the first trade is booked, not assembled as they arrive. It is also why a laundry so often costs more per square metre than the rooms around it — the figure that surprises most homeowners when they see what a laundry renovation actually costs.

Running the sequence instead of reacting to it

The difference between a laundry renovation that finishes on budget and one that does not is rarely the quality of the trades. It is whether someone was holding the sequence — booking each trade into the window the previous phase actually finished, waiting for the waterproofing certificate before the tiler, and refusing to let a late dryer or benchtop change ripple through every dependent phase. That coordination is the work, and in the smallest room in the house it is the work the homeowner either does deliberately or pays for in friction.

The 12-Phase System is built to put that coordination in the homeowner's hands before the project starts — the order of trades, the dependencies, the decisions that have to be locked before each phase, and the hold points where getting it wrong compounds. Phase awareness is what turns a homeowner from someone reacting to whichever trade turns up next into someone running the project the trades are working inside.

If the cost baseline is the right first step, use the free Renovation Cost Calculator — a trade-by-trade estimate for your specific laundry, in under 5 minutes, before any trade has quoted.

Frequently asked questions

What is the correct order of trades in a laundry renovation?

The on-site order is: isolate and disconnect services, demolition, structural and framing changes, plumbing and electrical rough-in, wall lining and substrate preparation, waterproofing and hold-point sign-off, floor and wall tiling, painting, cabinetry installation, benchtop templating, benchtop fabrication and installation, plumbing and electrical fit-off, appliance installation, then defects inspection. Design, selections, and procurement are locked before any of it begins. Each trade depends on the one before it, which is why the order cannot be reshuffled — and the waterproofing sign-off in the middle is the one phase that cannot be skipped.

Does a laundry need to be waterproofed?

Yes, where a floor waste is installed — which is almost every laundry. Under the National Construction Code Housing Provisions and AS 3740, the floor must be waterproofed and graded to fall to the waste at a minimum of 1:80, and the wall junctions adjacent to the tub must be sealed. The membrane has to be inspected and certified before tiling, because once the tiles are down it cannot be verified. Skipping it risks a leak that rots the subfloor and the wall framing.

Why does such a small room take so many trades?

Because a laundry runs the same trade list as a kitchen — plumber, electrician, waterproofer, tiler, cabinetmaker, stone fabricator, painter, and floor layer — in a fraction of the space. The work is not less; it is the same sequence compressed into four square metres, with room for only one trade at a time. That is why a laundry often costs more per square metre than a larger room and why the order of trades matters more, not less, when the room is small.

When are the washing machine and dryer installed?

At the end, after the benchtop and second-fix plumbing and electrical are complete. The connections are roughed in early — the washing machine taps and drainage at first fix, and the dryer's exhaust duct or power circuit depending on the type — but the appliances themselves are installed in the final phase, with the dryer's venting or clearances confirmed before sign-off. Choosing the dryer type after the rough-in means reopening a wall.

Can the floor be tiled before the waterproofing is signed off?

No. The waterproofing membrane sits under the floor tiles, so it has to be inspected and certified while it is still visible. Tiling before the sign-off means the membrane is never verified, and if it fails, the leak is not discovered until it has reached the subfloor — at which point the fix is removing the tiles, the membrane, and anything installed on top of them. The certificate is a hold point for exactly this reason.

Who coordinates the order of trades if I do not have a builder?

On a self-managed laundry renovation, the homeowner does. Each trade is responsible for their own phase, but no individual trade owns the handoffs between phases or the schedule that sequences them. That coordination — booking each trade into the window the previous phase finishes, holding the tiler until the waterproofing certificate is issued, keeping selections final — is the homeowner's role, and in a single-file room it is the part that decides whether the project runs to budget.