Mr. Clog Plumbing
Plumber Seven Hills
Blocked drains in post-war cottages, knock-down rebuilds, stormwater and 24/7 emergencies across Seven Hills, Lalor Park, Kings Langley and Toongabbie.
Our guarantee: 12 months on our workmanship, in writing. What it covers
Your Local Seven Hills Plumber
Seven Hills was farmland for a century and a half. The first grant, 60 acres to John Redmond, came in 1793, Matthew Pearce took up Kings Langley in 1795, and the railway arrived in 1860, with a platform from 1869. The farms were cut into smaller lots between the wars, and from 1940 the area turned into a residential suburb. After 1945 the Housing Commission built hundreds of homes here, mostly south of the railway, including timber-framed cottages it tendered for in 1947, and Lalor Park was carved out next door in the mid-1950s. The old Grantham poultry stud, later the government's Poultry Research Station, was sold for housing after it closed in the 1980s. Most of the suburb is in Blacktown City, with the strip along the north bank of Toongabbie Creek in the City of Parramatta since 2016. At the 2021 census 84% of homes were separate houses, about one in ten townhouses or semis and only 6% flats, and about a third were rented.
The typical older Seven Hills home is a single-storey post-war house of around 100 square metres on a block of 600 to 900, and since the 2000s many of them have been knocked down for two-storey brick veneer houses. That leaves streets where a seventy-year-old sewer line runs next door to a new one, and where a rebuild often reuses the original connection to the main. North of the railway is a large industrial and commercial area around Powers, Station and Artisan Roads and the Prospect Highway, with Blacktown Creek along its southern edge. The suburb drains to Blacktown Creek and Toongabbie Creek, both part of the Upper Parramatta River catchment, and Blacktown City's Overland Flow Flood Study, adopted in 2024, maps the paths stormwater takes across Seven Hills when the pipes are full.
$0 call-out fee — available 24/7, 365 days a year across Seven Hills and nearby suburbs.
Services in Seven Hills
- Blocked Drains
- CCTV Drain Inspection
- Pipe Relining
- Stormwater Drainage
- Hot Water Systems
- Emergency Plumbing
Common Plumbing Problems in Seven Hills
Every part of Sydney has its own plumbing character, shaped by the age of the housing, the ground it sits on, and the weather it takes. Here is what we are called out for most often around Seven Hills.
Post-war cottages on their original sewer
A Housing Commission cottage from the late 1940s or a 1950s house on a subdivided farm lot usually still drains through the pipe it was built with. Seventy years of roots, settling and opened joints is why a toilet starts gurgling or the gully in the yard overflows. A camera shows whether a clean will hold or a section has failed.
New houses on old connections
When a cottage is knocked down for a two-storey home, the new plumbing is often joined to the existing line between the boundary and the main. If that old section is cracked or full of roots, the new house blocks within months. Inspecting it before the slab goes down is far cheaper than finding out after.
Clay that moves under the pipes
Seven Hills sits on the Cumberland Plain's shale-derived clay, which swells when wet and shrinks when dry, and Western Sydney's shales carry natural salt. Over decades that movement pulls rigid pipe joints apart, and salt attacks brick, mortar and concrete pits. It is one reason the older lines here crack where they do.
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Common Questions
FAQs
Why does the drain in my older Seven Hills house keep blocking?
Most often roots or a displaced joint in the original post-war sewer. Wipes and grease cause the rest. We clear it, and a camera inspection tells you whether the pipe needs relining or a section replaced so it stops coming back.
We are knocking down and rebuilding. Should we check the old sewer?
Yes. New plumbing is often connected to the existing line out to the main. A camera inspection before building starts shows whether that line is sound or needs replacing while the site is open.
Does stormwater flood across properties in Seven Hills?
In heavy rain it can follow overland flow paths, which Blacktown City Council mapped in its 2024 Overland Flow Flood Study. Check the council's flood information for your address. We can make sure your own pits, grates and stormwater lines are clear and falling the right way.
Is Seven Hills in Blacktown or Parramatta council?
Mostly Blacktown City. The strip along the north bank of Toongabbie Creek has been in the City of Parramatta since 2016.
Do you do emergency plumbing in Seven Hills after hours?
Yes. Our phones are answered 24 hours a day, 7 days a week, including weekends and public holidays, and we send a licensed plumber out after hours for problems that can't safely wait, such as a burst pipe, sewage backing up or the only toilet blocked. There is a $0 call-out fee.
How much will it cost?
It depends on the job. You get a fixed price quoted before we start, and there is a $0 call-out fee.
What Sydney Customers Say
We recently used Mr Clog Plumbing for our granny flat in Guildford and couldn't be happier with the service. Everything was handled professionally from start to finish, with great communication and workmanship…
Absolute legend. Turned up on time, sorted the problem quickly and didn’t charge a fortune. Super easy to deal with and cleaned up after the job too. Will definitely be using him again and would happily recomme…
Turned up on time and honest service, couldn’t ask for much more.
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