Squeezing a washing machine into a bathroom sounds simple right up until you start measuring. Getting a bathroom laundry combo layout right has far less to do with styling than it does with millimetres, drainage and airflow. Plan it well and you free up an entire room somewhere else in the house. Plan it badly and you get a cramped, permanently damp space where the washing machine door clips the vanity every single time you open it.
Combined bathroom and laundry spaces are one of the most requested jobs we see across the Gold Coast, especially in apartments, townhouses and investment properties where every square metre does double duty. They are also one of the trickiest rooms to get right, because you are stacking two sets of plumbing, two sets of compliance rules and two very different daily routines into one footprint.
Below we cover the layouts that genuinely work, the dimensions to design around, what the job costs in South East Queensland, and the waterproofing and ventilation rules that catch people out.
What Is a Bathroom Laundry Combo?
A bathroom laundry combo is a single wet area that handles washing yourself and washing your clothes. In practice that means a shower, toilet and vanity sharing the room with a washing machine, dryer, tub and enough bench space to sort and fold.
The appeal is obvious. You are already waterproofing, already running drainage, already tiling. Adding laundry function to that footprint costs far less than building a separate laundry, and it hands you back a whole room for storage, a study nook or a fourth bedroom.
The catch is that a laundry is a working room and a bathroom is a relaxing one. The best combos hide the working half without making it inconvenient to use.
Four Bathroom Laundry Combo Layout Options That Work
There are really only four arrangements worth considering. Which one suits you comes down to the shape of the room and where your existing drainage sits.
1. The Galley (two-wall)
Wet services on one wall, laundry on the other, with a walkway down the middle. This is the most efficient option for long, narrow rooms and it keeps plumbing runs short. Best suited to rooms at least 1.8 metres wide so you keep a comfortable walkway between the two sides.
2. The L-Shape
The vanity and laundry bench form a continuous L along two adjoining walls, with the shower and toilet on the opposite side. This gives you the longest unbroken run of bench space, which is what most people actually want for folding. It works beautifully in squarish rooms.
3. The U-Shape
Three walls of joinery with the toilet or shower at the open end. Storage-rich and highly functional, though it needs a genuinely generous footprint to avoid feeling like a submarine. Reserve this one for larger family bathrooms.
4. The Concealed Nook
The washer and dryer stack vertically inside a cupboard with bi-fold or cavity slider doors. Close the doors and the room reads as a straight bathroom. This is the standout choice for ensuites, guest bathrooms and apartments, and it is the layout that resells best because visitors never see a laundry at all.
Sizes and Clearances: The Numbers That Decide Everything
Most combo layouts fail on paper long before they fail in real life. These are the figures to design around.
Appliance footprints
- Front loader: around 600mm wide and 850mm high, with depth varying between roughly 565mm and 660mm depending on the model
- Top loader: roughly 540mm to 700mm wide, and it needs clear space above for the lid to swing open
- Side clearance: 5mm to 10mm each side so the machine is not gripped by the cabinetry
- Rear clearance: 60mm to 100mm for hoses, the power point and airflow
- Door swing: allow the full arc of the washer door, then check it against the vanity, the toilet and the room door
Treat 600mm x 850mm as a starting point only. Confirm actual model dimensions before joinery is ordered, because handles, hoses and taps regularly make an appliance deeper than the spec sheet suggests.
Benches, cabinetry and circulation
- Bench height: 900mm is standard, with 880mm to 950mm the comfortable range
- Bench depth: 600mm standard, or 620mm to 650mm if you want the benchtop to sit flush with deeper appliances
- Circulation space: at least 1,000mm between cabinetry and anything opposite it
- Overhead cupboards: minimum 600mm above the benchtop, typically 300mm deep so you are not knocking your head
- Hanging rail: allow 800mm of clear drop for garments
- Laundry tub: a 45L tub suits a 450mm to 500mm cabinet module; a 70L tub needs a 600mm module
In a compact ensuite footprint the same principles apply as in our guide to small ensuite renovation ideas, where keeping plumbing in place does most of the heavy lifting on budget.
What a Bathroom Laundry Combo Costs
Cost is driven almost entirely by one question: are you moving the plumbing?
| Scope | Typical range | What it covers |
|---|---|---|
| Cosmetic refresh | $8,000 – $15,000 | New tiling, tapware, vanity and cabinetry with all services staying exactly where they are |
| Mid-range combo | $18,000 – $28,000 | Full strip-out, new waterproofing, custom joinery, new fixtures, minor service adjustments |
| Full reconfiguration | $28,000 – $45,000+ | Relocating drainage and walls, new floor waste, structural changes, premium finishes |
For context, the Housing Industry Association puts the national average bathroom renovation spend at around $26,000. A combined room sits above a standalone bathroom because you are adding joinery, a second waste point and extra electrical work.
Two things reliably blow budgets. The first is relocating the floor waste, which means cutting the slab. The second is asbestos, common in Gold Coast homes built before the late 1980s and never included in a renovation quote. Set aside 10 to 20 per cent as a contingency.
Our Gold Coast bathroom renovation packages exist precisely to take the guesswork out of this. The Essentials, Plus+ and Premier packages each carry defined inclusions, so you know what is covered before demolition starts rather than after.
The Must-Haves: Compliance You Cannot Skip
This is where combined rooms differ most from a standard bathroom, and where DIY jobs come unstuck.
Waterproofing
Wet area waterproofing in Australia is governed by AS 3740, referenced through the National Construction Code. A few requirements matter specifically for combos. Walls adjoining a laundry tub must be water resistant to at least 150mm above the vessel where it sits within 75mm of the wall. Shower walls must be waterproof to at least 1,800mm. And where the room requires a floor waste, the NCC waterproofing specification requires the entire floor, all wall and floor junctions, and every penetration to be waterproofed.
A washing machine failure dumps far more water, far faster, than a shower ever will. Membrane quality is not the place to economise. If you are seeing damp skirting boards or a musty smell in an existing room, our guide on shower waterproofing repair walks through what proper remediation involves.
Ventilation (the one everyone misses)
Here is the detail that catches almost everybody. Under the NCC condensation management provisions, a bathroom exhaust needs a minimum flow rate of 25 litres per second. A laundry needs 40 litres per second. Combine the two rooms and you should be designing to the higher figure, not the lower one.
Exhaust air must also discharge directly outside via a duct or shaft. Venting into the roof space is no longer acceptable, and the same applies to a vented clothes dryer. If the room has no openable window, the fan must be interlocked with the light switch and run on for ten minutes afterwards.
In our humidity this is not box-ticking. A Gold Coast summer plus a hot shower plus a running dryer produces an impressive amount of moisture, and undersized ventilation is the fastest route to mould in the ceiling.
Licensing
In Queensland, building work valued above $3,300 must be carried out by a licensed contractor. The QBCC even issues a specific licence class for builders restricted to kitchen, bathroom and laundry work. You can check any contractor’s licence on the QBCC register before you sign anything. Capital Bathrooms holds QBCC licence 15117078, and every renovation carries a 6-year workmanship warranty plus a 6-year waterproofing guarantee.
Frequently Asked Questions
Does a bathroom laundry combo devalue your home?
Not when it is well executed. Buyers react badly to a washing machine sitting exposed next to a vanity, but a concealed laundry behind cabinetry reads as clever use of space. In apartments and townhouses it is expected. The risk is only in poor execution, not the concept itself.
How much space do you need for a bathroom laundry combo?
Around 5 to 6 square metres is workable for a functional combo with a shower, toilet, vanity and concealed appliances. Below roughly 4 square metres you will need to stack the washer and dryer vertically and accept a compact vanity. There is no minimum floor area set by the code, but clearances and door swings impose practical limits quickly.
Can the washing machine share the bathroom drain?
A washing machine needs its own approved waste connection, usually a standpipe or a dedicated tub outlet, sized to handle the discharge rate of a pump. It cannot simply be run into a shower waste. This is licensed plumbing work and needs to be signed off properly.
Should I choose a stacked or side-by-side arrangement?
Stacked wins on floor space and lets you conceal both appliances behind a single cupboard. Side-by-side wins on bench space, since the units sit under a continuous benchtop you can fold on. If your room is under about 6 square metres, stack them.
How long does a combo renovation take?
A standard full bathroom renovation typically runs 4 to 5 weeks, and a combined room usually sits at the upper end of that or slightly beyond. Much of the timeline is fixed by waterproofing cure times required under Australian Standards. You genuinely cannot rush that part.
Planning Your Combo
A bathroom laundry combo is one of the highest-value renovations available to Gold Coast homeowners, because it buys back an entire room without extending the house. The difference between one that works and one that irritates you daily is decided on the plan, long before a tile is cut.
We have delivered combined and standalone laundry renovations across the coast, including this Robina laundry renovation using the Essentials package. To have your space assessed properly, see our residential bathroom renovation service or book a free onsite consultation. We will measure up, flag anything problematic in your layout, and give you a fixed-price proposal with a realistic timeline.
