CCTV survey: $300–$750
Stands alone and is credited against the works by most operators. Without it nobody can price a liner honestly.
A cracked or root-damaged drain does not have to mean a trench through the garden. A resin liner is cured inside the existing pipe from an access point you already have, sealing every joint along the run, and the surface above is never touched.
A resin-saturated liner is drawn into the existing pipe through an access point, inflated so it presses against the wall, and cured until it hardens. What you are left with is a continuous pipe inside the old one, with no joints along its length and a slightly smaller bore than the original.
Nothing is excavated, and the cured surface is smoother than the clay or concrete it lines, so flow is typically maintained or improved despite the small loss of diameter. On a property where a driveway, mature garden or paving sits over the line, that is the whole argument.
A crack that opens in summer and closes in winter produces a fault that comes and goes, which is maddening to diagnose and very easy to dismiss as bad luck.
Prospect’s notoriously heavy clay swells after rain and shrinks in drought, cracking rigid sewer pipes and opening joints that snag waste and let roots in.
A liner is continuous through the affected length, so seasonal movement no longer has a joint to work on. On reactive ground that is the difference between a repair that lasts and one that reappears the next dry summer.
Properties on a slope often have long drainage runs, sometimes crossing the whole block to reach the main. The practical questions are where the inspection openings are and whether the liner can be drawn through in one length or needs a second access.
That is worth establishing before quoting. A single long run costs less per metre than the same distance broken into stages, and the difference is decided by access, not by the pipe.
Once is weather. Twice is a defect, and the second event is the point at which paying for a camera saves money rather than costing it.
What we are looking for is specific: a belly holding water, a joint that has opened, a section crushed by a vehicle crossing. Each has a different answer, and only one of them is relining. Knowing which you have is worth more than another clear.
People are often surprised that a drain laid before the war is a relining candidate rather than a replacement. Age alone does not decide it. A clay line with a sound barrel and tired joints is close to the best case for a liner.
The cases that genuinely need excavation are different: a collapsed section, a run that has lost its fall, or a pipe crushed out of round. A camera separates those in an hour, and the answer changes the cost by a multiple.
On stable ground a short patch over a single defect is often the proportionate repair. On reactive soil it frequently is not, because the movement that opened one joint has been working on every other joint in the same run for the same number of years.
That is worth knowing when you compare quotes. The cheaper patch can be the right call, but on this ground the full-length liner is more often the one that ends the problem rather than relocating it a metre.
Rain sheets off Prospect Hill and across the clay toward the reservoir creeks, overwhelming silted stormwater pits and flooding low yards.
Excavating on a slope is a different job from excavating on the flat. Access for a machine is often impossible, the spoil has to go somewhere, trench walls need support, and reinstating a tiered garden or a retaining structure can cost more than the drainage work it was dug for.
Relining sidesteps all of it. The line is repaired from an existing access point, and the surface above stays exactly as it is. On a difficult block the saving is not marginal, it is often the difference between doing the job and deferring it.
A liner passing a branch seals over it, so every junction has to be reinstated, usually by a cutter working from inside the pipe. It is routine, but it is also where a cheap job shows itself.
Ask how junctions will be reopened and ask to see them on the post-works camera run. A partially reinstated branch is a slow-draining fixture that nobody can explain six months later.
Stands alone and is credited against the works by most operators. Without it nobody can price a liner honestly.
The usual Sydney range for domestic sewer. Access and junction reinstatement are normally quoted separately.
One defect in an otherwise sound run. The proportionate answer on stable ground, and the wrong answer on a line with twenty tired joints.
Where the camera shows the same failure repeating along the length. Ends the problem rather than relocating it.
The honest comparison. Cheaper on an open lawn, rarely cheaper under a driveway, paving or a building.
Indicative Sydney ranges for 2026. Your job is quoted in writing after the camera survey. Figures here are indicative of the 2026 Sydney market rather than a quote from us, you get your own number as a fixed price before any work starts.
Describe what the drain is doing and how often. We will tell you whether it sounds structural or whether a clean and a maintenance interval is the honest answer.
The questions that come up before every relining job, answered with real numbers.
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