Drain relining costs on the Central Coast in 2026 range from $1,800 for a single point repair to $12,000+ for a full residential sewer reline, with the average job for a 1970s Central Coast home coming in at $5,500 to $7,000.
This guide sets out market-guide price ranges for Central Coast relining work, compiled and reviewed in 2026, so you can budget, compare quotes, and understand what you’re actually paying for. Your own figure is set by the contractor who inspects the pipe.
Central Coast Drain Relining Price Summary
| Service | Typical Cost | Notes |
|---|---|---|
| CCTV drain inspection (standalone) | $250 to $500 | Credited against same-day reline |
| Pre-purchase CCTV inspection + report | $300 to $450 | Formatted for solicitor review |
| Point repair (single patch, 300-600mm) | $1,800 to $2,800 | Localised defect, no full reline needed |
| Extended point repair (600mm, 1m) | $2,500 to $3,500 | Longer patch section |
| Junction repair | $2,500 to $4,000 | Robotic reinstatement included |
| Setup / minimum charge (incl. first metre) | $2,500 to $3,000 | Covers mobilisation, CCTV, jetting |
| Sewer relining per metre (residential) | $500 to $1,000/m | After minimum charge |
| Full residential sewer reline (10m) | $6,000 to $8,500 | 1970s CC home, standard access |
| Full residential sewer reline (15m) | $8,500 to $12,000 | Longer runs, boundary setback |
| Stormwater relining per metre | $400 to $800/m | Less than sewer due to regulatory difference |
| Average Central Coast home (8-10m) | $5,500 to $7,000 | Most common scenario |
What Drives Drain Relining Costs
1. Pipe Length
Relining is priced per metre after the setup/minimum charge. The setup charge covers the mobilisation to site, the CCTV inspection, the high-pressure jetting, and the first metre of liner. After that, each additional metre adds to the per-metre rate.
Example calculation:
- Setup/first metre: $2,750
- Additional 11 metres at $600/m: $6,600
- Total for 12-metre sewer reline: $9,350
2. Pipe Diameter
Residential sewer pipes are typically 100mm diameter, the standard rate in the table above. Larger-diameter pipes (150mm commercial, 225mm or 300mm stormwater mains) require wider liners that cost more per metre to produce and install.
| Diameter | Relative Cost |
|---|---|
| 50-75mm (branch drains) | Slightly less per metre |
| 100mm (standard residential sewer) | Base rate |
| 150mm (larger residential or light commercial) | +20-30% per metre |
| 225mm+ (commercial, stormwater mains) | Priced separately, contact us |
3. Access Complexity
The standard scenario: existing cleanout at the boundary, floor waste or cleanout at the house end. Two access points, no additional holes required. This is the standard price.
Additional access requirements that add cost:
- No existing cleanout at the boundary (need to make one)
- Access through a subfloor crawl space
- Pipe entering below a concrete slab at both ends
- Long haul from nearest access point to the pipe entry
4. Number of Junctions
Each lateral junction (branch line connection) that is covered by the main liner needs to be reopened by a robotic cutter after cure. Most residential jobs have 2-4 junctions (toilet branch, laundry branch, kitchen branch, second bathroom if present). Robotic junction reinstatement is typically included in the job cost, but very complex junction configurations add time and cost.
5. Liner Type
- Felt liner with epoxy resin: Standard specification, suitable for most residential sewer relining. Cost-effective, 50-year warranty.
- Glass-fibre liner: Used for larger diameters or where higher structural loads are required (under roadways, heavier vehicles). More expensive.
- Silicate/blended liner: Specific applications. More expensive.
For standard Central Coast residential work, felt liner with epoxy is the appropriate specification.
6. Cure Method
- UV cure: Fastest cure (30-90 minutes), consistent result, slightly higher liner cost.
- Steam cure: Effective, used where UV isn’t suitable.
- Ambient cure: Slowest, used as backup. Adds time to the job but not necessarily cost.
7. Pre-Work Jetting Complexity
Standard jetting: $300 to $500. Root mass that requires extended cutting nozzle time: adds 30-60 minutes and $100 to $200. Severely grease-loaded commercial pipe: additional jetting cost.
Worked Example: A 1972 South Gosford Brick Home
- Property: 3-bedroom brick veneer, single bathroom, laundry, 1972 construction
- Sewer pipe: 100mm terracotta, 12 metres from bathroom stack to boundary cleanout
- Findings: Root intrusion at 3 joints, one cracked section, all within the 12m run
- Access: Cleanout at boundary, floor waste at bathroom end
Job cost breakdown:
| Item | Cost |
|---|---|
| CCTV inspection | Included (credited against reline) |
| Setup/mobilisation + jetting + first metre | $2,800 |
| Additional 11 metres @ $620/m | $6,820 |
| 3 junction robotic reinstatements | Included |
| Post-cure CCTV inspection | Included |
| Total | $9,620 |
Compare to dig-and-replace: Excavation (12m), pipe supply and lay, concrete reinstatement (driveway + path, ~20m²), reinstatement of garden: $16,000 to $22,000.
Worked Example: Terrigal Pre-Purchase CCTV with Point Repair
- Property: 1978 Terrigal home, $1.6M purchase price
- Request: Pre-purchase CCTV inspection
- Findings: Single joint displacement under driveway, 15mm offset with minor root entry. Rest of pipe in acceptable condition.
Job cost:
| Item | Cost |
|---|---|
| CCTV inspection + pre-purchase report | $380 |
| Point repair (patch at displacement, 600mm) | $2,650 |
| Post-cure CCTV | Included |
| Total | $3,030 |
Buyer requested vendor contribution of $3,000 to purchase price based on the CCTV report. Vendor agreed. Net cost to buyer: inspection cost only.
Under-Slab Relining: the Premium Explained
Pipes running under a concrete slab need the toilet pan removed and reinstalled, and the liner positioned more carefully. That work is charged on top of the standard per-metre rate rather than instead of it.
| Pipe length under slab | Premium over standard |
|---|---|
| 5-10 m under slab | Add $800 to $2,000 |
| 10-20 m under slab | Add $1,500 to $3,500 |
Add-On Services and What They Cost
| Service | Typical cost |
|---|---|
| Hydro jet clean before relining | Usually included in the reline quote |
| Post-reline CCTV | Usually included |
| Follow-up inspection (3-6 months) | $250 to $400 |
| Additional pit excavation at a junction | $800 to $2,500 per pit |
| Inspection shaft raise or reinstatement | $400 to $900 |
| Root cutting (electric eel, before jetting) | $200 to $400 |
| Emergency after-hours call-out | $200 to $400 additional |
Central Coast Location Adjustments
Where the property sits in the region makes a modest difference to the final figure:
- Peninsula properties (Umina, Woy Woy): add 5-15% for high water table management during installation
- Coastal properties (Avoca, Terrigal): add 5-10% for UV-cure liner selection and moisture management
- Heritage or older properties: add 10-20% for the specialist care fragile pipe material requires
- Complex junction count (4 or more): add $300 to $600 per additional junction reinstatement
- AC cement stormwater (Wyong and Gosford estates): no premium for the relining itself, but the pre-job CCTV must confirm the pipe material so the contractor arrives prepared. Relining does not generate asbestos-containing waste, because the host pipe is not removed.
Commercial Relining: Scoped Per Project
Commercial jobs are not priced from a table. Pipe diameters run larger (150 mm, 225 mm, 300 mm), access is often harder, junction layouts are more complex, and the work frequently has to happen outside trading hours. Expect an after-hours or weekend premium of $600 to $2,500 on a commercial job scheduled around a business’s operating hours.
The practical consequence is that a commercial quote follows a scoping CCTV inspection rather than a phone estimate. A commercial CCTV scoping inspection runs $400 to $1,000 depending on the size and complexity of the system.
What’s NOT Included in Drain Relining Quotes
Always confirm what your quote includes. Items that may be additional:
- After-hours or weekend call-out premiums
- Access hole reinstatement if one is needed
- Stormwater inspection if quoted separately from sewer
- Additional jetting if the pipe is extremely blocked on arrival
- Council permits (if applicable, generally not required for private pipe work)
Drain Relining Cost FAQs
Q: Can I get a price over the phone? Yes, as a rough guide. For a 1970s Central Coast home with a standard 10-15m sewer run, budget $5,500 to $9,000 for a full reline. A firm quote requires a CCTV inspection.
Q: Why do some quotes come in much lower? Check what’s included: is CCTV included? What liner specification? What warranty? Some lower quotes use inferior liner products, do not include post-cure CCTV, or are for a shorter pipe length than actually needs to be relined.
Q: Is there GST on top of these prices? All prices on this page are inclusive of GST.
Q: Do you offer payment plans? Contact us to discuss. We can sometimes structure payment for larger jobs. Contact us →
Q: Will insurance cover any of this cost? In most cases, no. Full insurance guide →
Q: Are there government rebates or subsidies for drain relining on the Central Coast? There is no rebate scheme for residential drain relining that we are aware of, at either NSW or Central Coast Council level. For an investment property, the tax treatment of the work is the main financial offset; see our investment property guide and confirm the position with your accountant.
Q: How do I compare two quotes properly? Compare scope, not the headline number. Ask each contractor to itemise: whether CCTV is included, the pipe length and diameter being relined, the liner product and resin type, the cure method, how many junctions will be reinstated, whether post-reline CCTV is included, and the warranty duration and coverage. Two quotes at the same price can represent very different work. Full comparison guide →