Backyard drainage for soggy, flooding yards
A lawn that squelches for days after rain, puddles that never seem to dry, or water creeping toward the back door all point to the same thing: the yard has nowhere to send its water. We're a Matraville-based plumbing team helping homeowners across the southern Eastern Suburbs dry out their backyards, and we always set out the options and a fixed price before a shovel goes in the ground.
Signs your backyard drainage isn't coping
Pools that sit for days
Rain should soak in or run off within hours. Shallow ponds that linger, often in the same low corner, show the ground is either saturated or sloping the wrong way.
A lawn that stays spongy
Grass that turns yellow, moss that spreads and soil that sinks under your feet are classic signs of water trapped just below the surface.
Water running toward the house
If rain flows against the back wall, under the door or into a subfloor, it can lead to damp, musty rooms and puts extra moisture around the footings.
Paving that floods after a storm
Large paved or concreted areas shed water fast. Without a drain to catch it, all that run-off spills onto the lawn or the neighbour's side.
How we drain a wet backyard
No two yards behave the same, so we start by walking the property with you and checking the levels. We look at where the water collects, where it enters the yard, what surfaces are shedding it and where the nearest stormwater line or discharge point is. Then we recommend the simplest fix that will actually work.
- Subsoil or ag drains: a slotted pipe wrapped in filter sock is laid in a trench of gravel. Groundwater seeps into the pipe and is carried away to the stormwater system. These suit lawns and garden beds that stay waterlogged.
- French drains: a gravel-filled trench, often with a perforated pipe in the base, that collects surface and shallow water along a fence line, the base of a slope or the edge of a retaining wall.
- Surface pits: a grated pit at the lowest point picks up ponding water and sends it underground. Handy where one corner floods every time.
- Strip drains along paving: a slim grated channel at the edge of a patio or path catches run-off before it reaches the grass or the house.
Often a yard needs a combination, for example an ag drain across the lawn feeding a pit near the house. Whatever we suggest, it connects into the stormwater system, never the sewer, and we explain why each part is there.
Keeping water away from the house
The most important job is protecting the building. Water sitting against brickwork or seeping under a slab can show up inside as rising damp, peeling paint or a musty smell under the floorboards. A drain set along the back of the house, with the ground shaped to fall away from the walls, gives that water somewhere better to go. We also check that downpipes on that side are connected underground rather than spilling at the base of the wall.
Backyard drainage in southern Eastern Suburbs homes
It surprises people that sandy suburbs get waterlogged yards, but it happens. In parts of Matraville, Malabar, Maroubra and Botany the sand sits over firmer clay or rock, so water drains quickly through the top layer and then stalls. Where the water table is high, the ground fills up after a few days of steady rain and has nowhere to go.
Older brick and fibro homes often had yards laid out decades ago with no drainage at all, then gained a concrete patio, a paved path and a pool surround over the years. Each new hard surface adds run-off. Townhouse and duplex courtyards in Pagewood and Eastgardens face a similar squeeze, with small yards surrounded by walls and paving and very little soil left to soak anything up.
What you can safely check yourself
- Take photos of the yard during and just after heavy rain so we can see the pattern.
- Check whether your downpipes drain into pipes in the ground or simply onto the lawn.
- Look for pit grates hidden under mulch, turf or pot plants and clear them.
- Notice whether the neighbour's yard sits higher and drains toward yours.
Why locals trust us with their yards
- A local team operating out of Matraville
- Rated five stars by 100+ customers on Google
- Free quote on site, with a fixed price locked in before work
- Lifetime labour warranty on the work we do
- Licensed plumbers and gasfitters under licence 398171C
Common questions
What is the difference between an ag drain and a French drain?
An ag drain is a slotted pipe in a gravel trench that collects groundwater from soggy soil. A French drain is a gravel-filled trench that catches surface and shallow water along a line, and it often has a perforated pipe inside too.
Will you have to dig up my whole lawn?
No. Trenches for drains are narrow, usually not much wider than a spade. We lift the turf where we can, lay the drain and put the soil and turf back afterwards.
Where does the water from a backyard drain go?
It is piped to your stormwater system, which in most homes drains to the street kerb or an existing stormwater line. It never goes into the sewer.
Why is my yard still wet when the soil is sandy?
Sand drains well at the top, but if firmer clay, rock or a high water table sits underneath, the water has nowhere to go once that layer fills up.
Can water pooling near the house cause damage?
Yes. Water that sits against the walls or under the floor can lead to damp, mould and musty smells over time. Getting it draining away from the house is worth doing early.
How long does a backyard drainage job take?
Many jobs are finished in a day or two, depending on the size of the yard and how many drains it needs. We give you a clear timeframe with the quote.
Do I need a drain if my neighbour's water runs into my yard?
A drain along the boundary can catch water coming from next door and carry it to your stormwater line. We can look at the levels and suggest the best way to handle it.
This is part of our wider stormwater service. You may also want to read about stormwater pits and grated drains, blocked downpipes and drain camera inspections. We fix backyard drainage in Matraville, Malabar, Coogee and Kingsford.
Want to know more first? Take a look at our free homeowner's stormwater guide for tips on keeping your yard and house dry.