Stormwater Pit Installation Sydney
Book Cleared Now Drain Plumbing for stormwater pit installation across Sydney.
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Our licensed plumbers install, replace, raise, re-grate and clean stormwater pits for homes. The full stormwater drainage installation page covers the wider service behind this work. When a pit job joins or drains into an existing line, we run our CCTV drain camera along that line before any quote, so the work targets the real fault. Your call-out fee is $0.
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Honest Diagnosis
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$0 Call-Out Fee
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Same Day Service
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Lifetime Labour Warranty
What a Stormwater Pit Does
A stormwater pit is a drainage fitting set into the ground that collects surface water through a grate and feeds it into the property's stormwater pipes. The grate is the slotted cover that lets water in and keeps debris out. The pit takes in water off roofs, paving and gardens. Hard surfaces shed that run-off when rain can't soak in. That water joins the property's stormwater drainage, the pipe network that carries it off the site. The property's drains often run to the council street gutter, which feeds the wider stormwater network Sydney Water manages. Plumbers also call a stormwater pit a drainage pit.
Stormwater Pit Jobs We Do Across Sydney
Residential stormwater pit installation and repair covers five stormwater pit and grate jobs for Sydney homes: re-grating, cleaning, raising, installing a new pit and repairing a broken one:
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Re-Grating Pits
Get a quoteRe-grating a pit swaps a cracked, corroded or wrong grate for a cover that fits. Grated pit covers come as galvanised grates, hinged heelguard grates, solid concrete lids and drop-in covers, with Civilcast among the makers. We match the grate to the surface it sits in, from foot traffic to vehicle loads.
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We clean and clear pits by hauling out the silt and leaves that build up in the base. Our jet blaster flushes the pit's outlet so water flows freely again. Stormwater carries litter, silt, grease, oil and metals off roads and properties into Sydney's creeks, rivers, harbour and beaches. A cleared pit keeps those pollutants out of the waterways. Our blocked stormwater drain page covers a blockage in the stormwater line downstream of the pit. A detention tank's pit is cleaned on the tank's own maintenance schedule.
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Raising Pits With Risers
Get a quoteWhen new paving sits above the old pit, a riser brings the pit up to the new surface. A riser is a section stacked on a pit to lift its height. ACO (a drainage pit and grate maker) makes 300 mm extension risers to suit every pit size. Risers and lids adjust the height and secure the grate. We can raise and re-grate a pit without replacing it.
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New Pit Installation
Get a quoteInstalling a new pit gives water off roofs and the ground one place to gather. The pit then passes that water through pipes into the stormwater system. Stormwater pit installation starts with matching the pit's material, size and grate load rating to the surface and the flow. Roof water reaches the pit through downpipes. When the outlet sits above the pit, a charged system moves the water.
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Stormwater Pit Repairs
Get a quoteA sunken or cracked pit usually points to settlement on a poorly compacted base. Stormwater pit repair replaces the broken pit on firm, well-compacted bedding, so the pit stops sinking. A pipe fault near the pit belongs on our stormwater repairs page.
Choosing a Pit and Grate
A plastic pit will crack under a driveway, and a light grate fails where cars run. We match every drainage pit and grate to the surface and the flow:
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Driveway and Path Grates
A grate's load rating is the wheel load a grate is made to carry. ACO's nominal wheel loads run 330 kg, 2,670 kg and 5,000 kg across its grated pit range. Pit grates are made for anything from foot traffic to vehicle loads, across driveways, parking areas, paths and gardens.
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Plastic or Concrete Pits
Light-duty plastic pits suit gardens and pathways. Polymer concrete is a concrete made to resist chemicals and acids, for harsher ground. Precast concrete pits carry heavier loads. A driveway needs a concrete pit and a heavier grate.
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Pit or Channel Drain
Choose point drainage or a linear run to match the shape of the ground. A pit suits paving laid with falls to one point, or spots where run-off concentrates. A channel drain suits a threshold or a driveway's low edge that water tracks along. Our channel drain installation page covers that linear run in full.
Our Process
Every stormwater pit job runs in five steps, from the camera check to the grate:
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Camera check
We send the CCTV drain camera along any existing line the pit job joins or drains into, before any quote, so the work aims at the real fault. -
Written quote
Every job gets its price in writing before the work begins. -
The base
We excavate the hole and prepare a firm, well-compacted base. Sand or gravel bedding goes in at least 80 mm deep on earth, or 150 mm on rock. -
Pit and pipes
We set the pit level and match the upstream and downstream pipe levels to the design. A knockout is a thin wall panel broken out to take a pipe. Each of the four walls of a modular pit has one. We mark the knockout to the pipe size and break it out gently, never oversized. The stormwater pipe is cut flush with the inside wall and the joint sealed. -
Backfill and grate
Backfill uses the same material as the pipeline, placed and compacted evenly, and the grate goes on.
Why Choose Cleared Now Drain Plumbing
Cleared Now Drain Plumbing brings 15+ years' experience to every stormwater pit and grate job, and customers have left 300+ five-star reviews. Four things back the work:
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Honest Diagnosis First
You hear what's wrong with the pit and the line it feeds, plus the fix we'd recommend, before we pick up a tool. When the pit joins an existing line, the camera checks that line before the quote.
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$0 Call-Out Fee
Every job opens with a $0 call-out fee. After that, you get fair, upfront pricing, no surprises. Best Price Guaranteed applies on a written quote. The quote reaches you before any of the work starts, on every job.
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Lifetime Labour Warranty
Ask about the Lifetime Labour Warranty, which covers the labour.
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NSW Contractor Licence
Our contractor licence 498750C is issued by NSW Fair Trading for plumbing, draining and gasfitting.
Stormwater Pit Costs in Sydney
For pit and grate work, these GST-inclusive Sydney bands come from What's The Damage's guide for October 2026:
| Job | What it covers | Price band | Source |
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| Plumbing hourly rate | Standard residential plumbing work, Sydney metro, GST included | $92 to $230 an hour | What's The Damage guide, October 2026 |
| Drainage installation day rate | Sydney metro, GST included, an 8-hour day on bigger jobs such as new drainage | $800 to $1,200 | What's The Damage guide, October 2026 |
| Digging through sandstone | Added to excavation jobs in the eastern suburbs and inner west | $500 to $2,000 | What's The Damage guide, October 2026 |
| Call-out | The plumber comes out to look at the pit | $0 | Cleared Now Drain Plumbing |
Four things shift the price: the pit's size and material, the grate's load rating, access on site and sandstone. We quote in writing after a site look, and a camera check where a line exists.
Areas We Service
Same Day Service covers stormwater pit installation across Sydney's Northern Beaches, North Shore, Hills District, Inner West, Eastern Suburbs, Western Sydney, Sutherland Shire and South West Sydney.
Book Stormwater Pit Installation in Sydney
Water pooling at the grate just gets worse with the next storm, and so does a pit sunk below the paving. Call (02) 9158 3577 and a real person answers 24 hours, lining up Same Day Service, with a $0 call-out fee. You get $65 off your first service as a new customer. When the pit job joins an existing line, our camera checks that line before the written quote. Cleared Now Drain Plumbing backs the work with Quality Workmanship Guaranteed.
Frequently Asked Questions
What Size Stormwater Pit Does a Sydney Home Need?
Stormwater pits run from 300 mm by 300 mm, ACO's smallest polymer concrete pit, to 1,500 x 1,500 mm, Civilcast's largest precast pit. Humes modular precast pits span 450 mm square to 1,200 millimetres square, for pipes up to DN (diameter nominal) 900. Depth and the pipe levels the design needs finish the choice.
Which Standard Covers Stormwater Pit Installation in NSW?
AS/NZS 3500.3:2025 is the stormwater drainage standard, and it covers the stormwater drainage a pit belongs to. The full title is Plumbing and drainage Part 3: Stormwater drainage. Standards Australia confirmed the 2025 edition on 28 April 2025, in a blog listing on its own site.
Can a Stormwater Pit in Sydney Drain Into the Sewer?
No, a stormwater pit drains to the stormwater line, never the sewer. In very heavy rain, extra water gets into wastewater pipes through cracks, faulty joints, the lids of maintenance holes and stormwater pipes that run straight into the wastewater system. Sydney Water lists heavy rain among the usual causes of wastewater overflows. A pit on the stormwater line keeps that water out of the wastewater pipes. When no council gutter can be reached, an absorption trench soaks run-off into the ground.
How Do I Book Stormwater Pit Installation in Sydney?
One call to (02) 9158 3577 books Same Day Service across Sydney for your stormwater pit job, with a real person answering 24 hours. Your call-out fee is $0. Your written quote reaches you before any work begins.