Updated October 2026
Kogarah mixes old and new more sharply than most of St George. St George Hospital and the medical buildings around it, the station precinct and the newer apartment blocks sit only a few streets away from federation cottages, interwar bungalows and semis that have stood for generations. St George Blocked Drains is a local referral service, connecting Kogarah residents with licensed local drain plumbers we work with.
Why Kogarah drains block
Age is the main story in Kogarah's residential streets. Many of the older homes were connected to the sewer long ago with earthenware clay pipes laid in short jointed lengths. Over decades the ground shifts, joints open, and roots from established trees move in. A line that drained fine for years can turn slow and then block solid once a root mass takes hold.
Renovations add a twist. Plenty of Kogarah homes have had new bathrooms or rear extensions joined onto old pipework. Where a new PVC line meets an old clay one, the transition is a common place for misalignment and blockages.
Closer to the station, unit buildings share drainage between many households, and wipes and grease from several kitchens and bathrooms collect in common lines until something gives.
What clearing a blocked drain involves
The licensed drain plumbers we work with typically run a CCTV drain camera first, which on Kogarah's older lines shows both the blockage and the condition of the pipe around it. Jet blasting then clears roots and build-up from the pipe wall. If the camera finds a cracked or root-broken section, pipe relining can repair it from inside, which matters on tight blocks where digging means lifting paths or a driveway.
As a guide, a standard clear typically costs $150 to $400, tree root clearing $250 to $600, and a combined camera and jetting job $350 to $900. Relining starts around $3,000 and can reach $8,000 or more. The plumber quotes before work starts.
Frequently asked questions
My federation cottage keeps getting blocked drains. What is likely going on?
Repeat blockages in older Kogarah homes usually point to roots in clay pipes or a displaced joint. Clearing restores flow, but a camera inspection shows whether the pipe needs a lasting repair.
We just renovated and the new bathroom drains slowly. Why?
The new pipework may be fine while the old line it joins is not. A camera run from the new fixture through to the sewer shows where the restriction sits.
Is the blockage my problem or Sydney Water's?
You are responsible for the private line from the house to the connection with the main. Sydney Water owns the main itself. A camera with a locator shows which side the fault is on.
Slow drain or a backed up gully in Kogarah? Get a fast quote and we will pass it to a licensed local drain plumber.