No-dig pipe repair on the Lower North Shore.
Cracked or damaged pipe repaired in place in Chatswood — relining a stack or a shared line without opening walls, slabs or common areas.
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Chatswood has 11,129 dwellings, 67.6% of them apartments, plus the busiest commercial centre on the North Shore. In the towers, relining a stack avoids opening risers and disrupting a building. In the older detached streets — some of the oldest house drains in the district, dating from settlement in 1876 and the railway in 1890 — it avoids excavating gardens over pipe that is well past a century old. Different properties, same conclusion.
In the towers, grease scarring and cracked sections in modern stacks. Under the original streets, joint failure in earthenware over a century old — some of the oldest house drains in the district, and among the best relining candidates for that reason.
Because opening up a building is a different order of disruption. This is the part of a drainage repair people do not price until an excavator is already on site.
Commercial hardstand, basement slabs and occupied residential floors in the centre; established gardens and paving on the older streets. In a suburb this dense, excavation also means traffic management and pedestrian access that a residential job never involves.
A liner goes in through an opening that already exists. Nothing above the pipe has to move.
The high point of the area at around 114 metres, with ground falling away east and west. Fall is not the constraint here — density is. Getting an excavator to a fault in central Chatswood is a logistical exercise before it is a plumbing one.
Chatswood sits in the City of Willoughby, postcode 2067.
Local figures sourced from: ABS 2021 Census QuickStats — Chatswood · Chatswood, New South Wales — Wikipedia
The oldest house drains in the district under the original streets: jointed earthenware, over a century old, and failing at the joints rather than along the barrel. In the high-rise stock it is modern PVC, where the case for lining is a damaged or grease-scarred section rather than root entry.
No trench, no spoil, and nothing above the pipe disturbed. The whole job runs through an existing access point.
The line is inspected end to end so the damage is located and measured. Nothing is quoted from the surface.
Roots are cut out and the pipe wall is jetted back to bare material — a liner will not bond to a coated pipe.
A resin-saturated liner is drawn into position through an existing access point and inflated against the host pipe.
The resin hardens in hours rather than days, forming a new pipe inside the old one with no joints for roots to re-enter.
Any branch lines are cut back open robotically, and a final camera pass confirms the result.
Not every damaged pipe should be relined, and we will say so. These are the cases where it genuinely wins here.
Cutting and reinstating a trading forecourt costs more than the pipe ever will.
Sound barrel, failed joints — the textbook host pipe.
Traffic management alone can exceed the repair.
Relining costs more per metre than excavation. It is usually cheaper overall, and this is why:
| Dig and replace | Relining | |
|---|---|---|
| Excavation | Trench the full length, remove and replace the pipe, backfill | None — the work runs through an existing access point |
| What comes up | Lawn, garden, paving, driveway or slab above the line | Nothing |
| Time on site | Days on a long or deep run | Usually one day for a typical run |
| Reinstatement | Priced separately and often the larger half of the bill | Not applicable |
| Result | New pipe, with joints | A jointless liner inside the host pipe |
| Design life | Depends on material and bedding | 50 years on a correctly installed liner |
The per-metre comparison is the one that misleads. Excavation quotes routinely exclude spoil removal and reinstatement, which is where a dig job gets expensive — and on some properties the reinstatement is simply not possible at any price.
These are typical ranges across the Sydney market — not Voyager’s price list, but a realistic yardstick to judge any quote against, including ours.
| Pipe relining, per lineal metre | $450 – $800 |
| Pipe relining, typical whole job | $4,000 – $10,000 |
| Patch repair, single damaged section | $1,500 – $3,000 |
| Junction reinstatement | $300 – $600 |
| Excavate and replace, per metre | $300 – $600 |
| Driveway reinstatement after a dig job, per sqm | $100 – $200 |
| CCTV drain inspection | $250 – $550 |
| Cutting tree roots from a line | $400 – $1,200 |
Voyager prices by the job, not by the hour, so the number you approve is the number you pay. A camera survey happens before any figure is given — a quote for relining that has not looked down the pipe is a guess.
Most Chatswood properties that ring about relining need a camera first. We will tell you straight — including when clearing the line is the whole job.
A correctly installed liner carries a 50-year design life, and it cures in hours rather than days — so the property is back in normal use the same week rather than the same month.
On a commercial line carrying trade waste, a jointless liner also removes the roughness that grease keys into — so the maintenance interval improves as well as the structural life.
Roots come back through joints. A liner has none.
Voyager covers the whole Lower North Shore. These are the closest to Chatswood:
No. That is the whole point of it. The liner is drawn in through an existing access point — usually an inspection opening or shaft already on the property — and cured in place against the old pipe. In the centre that means no road opening, no forecourt cut and no trading interrupted. On the older residential streets it means a century-old garden stays where it is.
Across the Sydney market, relining runs about $450–$800 per lineal metre, with a typical whole job landing between $4,000 and $10,000 and a single-section patch around $1,500–$3,000. Those are market ranges rather than Voyager’s price list. Density. In central Chatswood the cost of a dig job is dominated by access, traffic management and working hours rather than by the pipe, which is why the two options diverge so sharply here.
Per metre, no — excavation is cheaper per metre. Overall it usually is. A dig figure in a building also has to carry access through occupied lots, common areas out of use and works approvals — none of which appear on the per-metre rate. On some properties the reinstatement is not possible at any price, which settles it entirely.
A correctly installed liner carries a 50-year design life. It outlasts what it replaced because it has no joints along its length — and joints are where roots get in, where ground movement opens a gap, and where old earthenware fails first. For an owners corporation that is the relevant number — one authorised job against another decade of reactive callouts on the same line.
A typical residential run is a single day on site, and the resin cures in hours rather than days. Coordinating building access and notifying affected lots usually takes longer than the installation does.
Most can, but not all — and we will say so rather than sell you something that will not work. A pipe that has collapsed completely, or lost so much of its shape that there is nothing left to line against, needs replacing. In Chatswood the host pipe is usually a good candidate: in the towers, grease scarring and cracked sections in modern stacks. Under the original streets, joint failure in earthenware over a century old — some of the oldest house drains in the district, and among the best relining candidates for that reason.
Because the digging is the smallest part of a dig job here. In a centre this dense, excavation brings traffic management, pedestrian access, restricted working hours and reinstatement of commercial hardstand — costs that have nothing to do with the pipe and everything to do with where it is. A liner avoids all of them.
The owners corporation, where the line is common property — which generally means any pipe serving more than one lot. We deal with the strata or building manager directly and provide the camera footage they need to approve the work. Where the line serves only your lot, it is your decision.
Camera survey first, a fixed price agreed before the work starts, and no excavation.
Voyager Plumbing · NSW Contractor Licence 476657C
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Page reviewed and updated 20 August 2026
