Bathrooms, kitchens and laundries carry almost all of the water in a house, and in Canberra they also carry most of the history. An ex-govie in Ainslie, a 1970s brick veneer in Kambah and a 2018 townhouse in Harrison have three different generations of pipe behind the tiles, and the right way to renovate, repair or move a fixture depends on which one you own. This page covers what the plumber does in each of those rooms, how ACT approvals work, and the local details that decide whether a renovation goes smoothly.
Renovation plumbing across Canberra’s housing eras
The inner north and inner south are full of 1920s to 1960s ex-govie brick and weatherboard homes. Their bathrooms are small, often with a separate toilet, galvanised steel water lines and earthenware drains. When one of these is renovated the plumber usually finds that the galvanised pipe feeding the new mixer is rusted inside, so the short run from the wall is replaced in copper or PEX before the fit-off. Heritage precincts in Braddon, Ainslie and Griffith can add planning considerations for external changes, so ask early.
Woden Valley, Weston Creek, Belconnen and Tuggeranong were built from the late 1960s through the 1990s, mostly brick veneer on concrete slabs, with copper water lines and PVC drains. These bathrooms are generous but dated, and the common renovation is a full strip-out: new waterproofing, a walk-in shower where the bath was, a wall-hung vanity and a second toilet. The slab makes moving a toilet a bigger job than moving a basin, which is why the plumber wants to see the room before you commit to the layout.
Gungahlin and the Molonglo Valley are 1990s to 2020s, with PEX pipework, mains-pressure hot water and small floor plans. Renovations there are usually about upgrading finishes and fixing the first round of failures: dripping mixers, a pressure limiting valve that has stopped limiting, and dishwasher hoses reaching the end of their life.
Leaking showers and waterproofing
The most expensive bathroom problem in Canberra is rarely a pipe. It is a shower that has been leaking through failed waterproofing for years. The membrane at the floor-to-wall junction cracks, grout crumbles, the screen seal perishes, and water finds the wall frame. Reactive clay makes it worse: as the ground under a slab swells in a wet winter and shrinks in a dry summer, the shower base moves a fraction and the membrane tears.
The plumber’s job is to work out where the water is really coming from. A flood test of the base, a check of the waste connection and the tap penetrations, and a look at the room behind the wall will usually separate a plumbing leak from a waterproofing failure. A plumbing leak is fixed at the pipe. A waterproofing failure means the tiles come up and the recess is re-membraned, and it is far better to find that out before a new vanity and mirror are installed over the top of it.
Kitchen plumbing: sinks, mixers and dishwashers
Kitchen plumbing looks simple until the cabinets are in and nothing lines up. The rough-in stage is where the plumber runs hot and cold to the sink, dishwasher and fridge positions, installs the waste and any new drain, and pressure tests the lot before the plasterer closes the wall. The fit-off stage, after the benchtop, connects the sink and mixer, the dishwasher with its own isolation valve, and an air gap on the drain so waste water cannot siphon back into the machine.
Slow kitchen sinks in older Canberra homes are usually fat and food waste built up in an original drain, and a kitchen that gurgles when the dishwasher empties often has a venting problem rather than a blockage. If the drain is the issue rather than the fixtures, the blocked drains service covers clearing and camera inspection.
Laundry plumbing and washing machine taps
Laundries in Canberra are often on an external wall, in the garage or, in ex-govie homes, in a lean-to at the back. That puts the washing machine taps and the tub waste in the coldest part of the house. Frozen pipes on a July morning are a real risk, and the winter guide to frozen pipes explains why. The plumber installs washing machine taps with proper isolation, a tub with a trapped waste, insulates exposed lines and checks the drain can handle a full spin cycle. Braided flexible hoses on washing machines fail without warning and should be checked every visit and replaced when the braid shows rust.
Apartment renovations
Apartments in Braddon, Kingston Foreshore, Dickson, Belconnen town centre and Gungahlin have their own rules. Drainage stacks and water risers are common property, so a body corporate approval is normally needed before plumbing is altered, and moving a toilet or shower is limited by the fall available to the stack and the depth of the slab. Basins, mixers and kitchen sinks are usually straightforward. Flexible hoses are the main risk in apartments because a burst on one floor becomes a ceiling on the next, so an apartment renovation is the right time to replace every hose in the unit.
Access Canberra approvals and inspections
There is no local council in the ACT. Plumbing, drainage and gasfitting work must be carried out by tradespeople licensed by Access Canberra under the Construction Occupations (Licensing) Act 2004, and you are entitled to ask for the licence number. Sanitary plumbing and drainage work that goes beyond like-for-like replacement, such as moving fixtures, adding a bathroom or altering drains, requires notification and may require inspection before the work is covered. The plumber lodges the paperwork and arranges the inspection as part of the job, so the tiler is not held up.
Moving fixtures and hot water
Moving a toilet on a slab means cutting concrete, rerunning the drain with the right fall and reconnecting to the existing line. Moving a shower means a new waste, new waterproofing and often a new hot water route. A renovation is also the moment to look at the hot water system: an old electric tank in the laundry of a Wanniassa home may not keep up with a new rain shower and a second bathroom. The hot water plumber page covers replacements and the ACT’s move away from gas. For everything else in the house, see residential plumbing.
Upfront pricing applies to every renovation and repair: the rate is explained before anyone is dispatched and the work is quoted before it starts.
What is included
- Rough-in and fit-off plumbing for bathroom, kitchen and laundry renovations
- Mixer tap, basin, shower, bath and toilet installation and replacement
- Diagnosis of leaking showers, including failed waterproofing and moving shower bases
- Kitchen sink, dishwasher and fridge water connections with proper isolation valves
- Laundry tubs, washing machine taps and flexible hose replacement
- Relocating fixtures, including moving a toilet, sink or shower to a new wall
- Access Canberra notifications and inspections where the work requires them
Signs you should call now
- Water stains on the ceiling under an upstairs bathroom or on the wall behind a shower
- Tiles lifting, grout crumbling or a musty smell around the shower recess
- A mixer tap that drips, swings between hot and cold or needs force to shut off
- Water under the kitchen cabinet after the dishwasher runs, or on the laundry floor after a wash
- A kitchen sink that drains slowly or gurgles when the dishwasher empties
- A renovation that needs pipes moved before the tiler or cabinet maker can start
Waterproofing failures do more damage than burst pipes
A shower leaking through failed waterproofing can soak the wall frame and slab for months before anything shows. In ex-govie homes and 1970s brick veneers that means rotted timber and damp brickwork behind the tiles. If grout is crumbling or the room next to the shower smells damp, have it checked before the repair grows into a rebuild.
Frequently asked questions
Do I need approval from Access Canberra to renovate a bathroom in the ACT?
Like-for-like replacement of taps, basins and toilets generally does not, but sanitary plumbing and drainage work is regulated in the ACT. When fixtures are moved, drains are altered or a new bathroom is added, the licensed plumber lodges the required notification with Access Canberra and the work may need an inspection before it is covered up. The plumber handles that paperwork as part of the job, and you can ask to see the compliance certificate afterwards.
Why does my shower leak when the taps and pipes are fine?
Most shower leaks in Canberra homes are not pipe leaks. They come from waterproofing that has failed at the floor-to-wall junction, cracked grout, a perished screen seal, or a shower base that has shifted with the reactive clay under the slab. The plumber flood tests the base, checks the waste and the wall penetrations, and tells you whether the fix is a reseal, a new waste or a full strip-out and re-waterproof.
Can you fit a mixer tap in an ex-govie bathroom with old galvanised pipes?
Yes, but the plumber will look at the pipes first. Many 1940s to 1960s homes in Ainslie, Narrabundah and Griffith still have galvanised steel water lines that are corroded inside, and a new mixer on a rusty line will block or leak at the joint. Often the sensible approach is to replace the short run feeding the fixture in copper or PEX while the wall is open, so the new tapware lasts.
Is connecting a dishwasher or washing machine really a plumber's job?
In the ACT, connecting an appliance to the water supply and drainage is plumbing work and needs a licensed plumber. Beyond the rules, the practical reason is that most kitchen and laundry floods come from a poorly fitted hose, a missing isolation valve or a drain connection without an air gap. A proper connection includes a rated hose, a stop tap you can reach and a drain that will not siphon back into the machine.
Can plumbing be moved in an apartment renovation in Braddon or Kingston?
Often, within limits. In apartment buildings the drainage stacks and common water risers are body corporate property, so moving a toilet or shower more than a short distance may not be practical. The plumber checks the slab thickness, the fall available to the stack and the body corporate rules before quoting. Basins, mixers and kitchen sinks are usually much easier to relocate than toilets and showers.
What does a kitchen renovation rough-in involve?
The rough-in is the stage after demolition and before the cabinets arrive. The plumber caps or removes the old lines, runs new hot and cold water to the sink, dishwasher and fridge positions, installs the waste and any new drain, and pressure tests everything. Once the benchtop is in, the fit-off stage installs the sink, mixer, dishwasher connection and isolation valves. Timing is agreed with your cabinet maker.
Do you handle laundry plumbing in a garage or outside laundry?
Yes. Many Tuggeranong and Belconnen homes have the laundry in a garage or on an external wall, which raises two issues in Canberra: the pipes are exposed to frost, and the tub waste often connects to an old drain. The plumber installs washing machine taps, a tub and a proper drain, insulates any exposed lines and checks the drain handles a full spin cycle without backing up.
