How Much Does It Cost to Unblock a Drain in Australia 2026

Unblocking a drain in Australia costs $462–$1,232 inc. GST in 2026 on Leadkit's plumbing rate card — $462 for a standard electric-eel clear in business hours, rising past $1,000 once you add a CCTV drain inspection, hydro-jetting, difficult access or an emergency callout. Across the wider market, a simple sink or shower clear starts around $150–$400, and a tree-root job that ends in pipe relining can run into the thousands.

That's a wide spread, and it's why the "blocked drain cost" you see quoted online is so often useless. The number depends on where the blockage is, what's causing it, what gear the plumber needs to bring, and whether you're ringing at 10am on a Tuesday or 10pm on a Saturday. Sydney, Melbourne and Brisbane homeowners all face the same four levers — this guide shows you how each one moves the bill.

Before you call around, get a ballpark from Leadkit's plumbing quote calculator — pick "blocked drain", choose eel or jet, toggle CCTV on or off, and you'll have a figure in 30 seconds.

Last updated: September 2026.

Key takeaways:

• A standard blocked drain clear with an electric eel costs $462 inc. GST in business hours on Leadkit's 2026 plumbing rate card ($120 callout + $300 clearing + 10% GST).
• Hydro-jetting (jet blasting) adds $165 inc. GST over an electric eel — $627 for a business-hours jet clear with easy access.
• A CCTV drain inspection costs $275 inc. GST as an add-on to a drain clear — the single biggest optional line on the bill, but the only way to know why a drain keeps blocking.
• After-hours callouts multiply the callout fee by 1.5; a same-day emergency doubles it. The worst-case scenario on the rate card — emergency, jet, CCTV, difficult access — lands at $1,232 inc. GST.
• Tree roots, collapsed pipes and cracked joints move you out of "drain clearing" and into pipe relining, which the market prices at roughly $400–$800 per metre in Sydney.
• Every figure here is a price indication only. Your plumber will confirm the final price after assessing the job.

Table of contents

1. Blocked drain cost in Australia — 2026 price table
2. What does a blocked drain plumber cost to walk in the door?
3. Electric eel vs hydro-jet — which drain cleaning method costs what?
4. How much does a CCTV drain inspection cost, and do you need one?
5. What do after-hours and emergency blocked drain callouts cost?
6. What pushes a blocked drain bill past $1,000?
7. Who pays — you, your landlord or the water authority?
8. How do blocked drain costs vary across Australian cities?
9. How to keep your blocked drain cost down
10. Frequently asked questions
11. Get a blocked drain quote in 30 seconds

Blocked drain cost in Australia — 2026 price table {#price-table}

Unblocking a drain costs between $462 and $1,232 inc. GST in 2026 on Leadkit's plumbing rate card, depending on the clearing method, whether a CCTV inspection is included, how hard the drain is to reach, and when you call. The table below shows the most common combinations.

For context, here's how the wider Australian market prices the same work in 2026, based on the published price guides of licensed plumbers in Sydney, Melbourne, Brisbane and the Gold Coast:

These are price indications only. Your plumber will confirm the final price after assessing the job.

Methodology note: The first table is calculated directly from the default rate card inside Leadkit's own plumbing quote calculator — a $120 callout fee, a $300 electric-eel clear, a $450 hydro-jet clear, a $250 CCTV inspection fee, access surcharges of $0/$80/$180, and timing multipliers of 1×, 1.5× and 2× on the callout — with 10% GST added on top, exactly as the calculator's formula does it. Leadkit builds and owns that calculator; the defaults are a national starting point that each plumber adjusts to their own pricing, so treat them as a benchmark, not a promise. The second table is a market observation drawn from plumbers' published 2026 price guides, not from Leadkit data.

What does a blocked drain plumber cost to walk in the door? {#callout-fees}

A blocked drain plumber charges a callout fee of $120 on Leadkit's rate card, and $100–$200 across the wider market, before any clearing work starts. That fee covers travel, the first look at the problem and usually the first 15–30 minutes of labour — it's the same fee you'd pay for a leaking tap or a running toilet.

What's different about drains is that the clearing work is usually priced as a flat job cost, not by the hour. On the Leadkit rate card, that's $300 for an electric eel or $450 for a hydro-jet, regardless of whether it takes the plumber 20 minutes or 90. Most plumbers work the same way, because drain jobs are hard to time in advance and homeowners hate open-ended hourly bills.

There's also a minimum job fee — $150 on Leadkit's rate card — that kicks in if the callout plus job cost somehow comes in under it. On a blocked drain, you'll never hit it, because the cheapest clear is already $420 ex. GST. It matters more for tap washers and quick fixes.

The takeaway: on a blocked drain, the callout fee is only about a quarter of the bill. Don't pick a plumber on callout fee alone — ask for the all-in price for the clear. If you want to see how callout fees compare across a full range of plumbing jobs, our Sydney plumber callout cost guide breaks them down job by job.

Electric eel vs hydro-jet — which drain cleaning method costs what? {#eel-vs-jet}

An electric eel clear costs $300 ex. GST ($330 inc.) and a hydro-jet clear costs $450 ex. GST ($495 inc.) on Leadkit's plumbing rate card — a $165 inc. GST difference. The market gap is similar: eel jobs run $250–$600 and jetting $350–$900, because the jetter is a bigger, more expensive piece of gear that takes longer to set up.

Electric eel (drain snake). A motorised steel cable with a cutting head that spins its way through the blockage. It's the default tool for a standard blockage — hair, wet wipes, a build-up of soap scum, a small root intrusion. It punches a hole through the blockage so water flows again, but it doesn't scour the pipe walls.

Hydro-jet (jet blasting). A high-pressure water jet — typically 3,000–5,000 psi from a trailer or van-mounted unit — that cuts through grease, fat, silt and root masses and flushes the debris out. It cleans the full pipe diameter, which is why plumbers reach for it on recurring blockages, kitchen grease lines and stormwater drains full of leaf litter. Jet blasting drain cost is higher, but the clear lasts longer.

Which one you'll get depends on the cause. A first-time blocked shower drain almost never needs a jetter. A kitchen line that's been slow for a year, or a sewer that's blocked twice in six months, almost always does — and paying $165 more for the jet now is cheaper than paying for a second eel visit in a month.

A tip from the calculator side: when a customer selects "high-pressure hydro-jet" in Leadkit's plumbing calculator, the description reads "tough roots or grease" — and that's the honest rule of thumb. If you don't know what's in there, ask the plumber which method they recommend before they start, and why.

How much does a CCTV drain inspection cost, and do you need one? {#cctv}

A CCTV drain inspection costs $250 ex. GST ($275 inc.) as an add-on to a drain clear on Leadkit's plumbing rate card, and $200–$600 across the market when booked as a stand-alone job. It's a waterproof camera on a flexible rod, pushed through the pipe so the plumber can see the inside of the drain on a monitor and locate the exact depth and position of the problem.

Across the blocked-drain scenarios in Leadkit's plumbing calculator rate card, the CCTV toggle is the single biggest swing on the bill — it adds $275 inc. GST, more than switching from an eel to a jetter ($165) or moving from business hours to a same-day emergency callout ($132). That's exactly why homeowners tend to decline it, and exactly why they end up paying for a third drain clear in a year.

When you don't need it: a first-time blockage in a single fixture (one basin, one shower) with an obvious cause. Clear it and move on.

When you do: any sewer or stormwater blockage that has happened before; any blockage where the plumber suspects tree roots; any property with mature trees, old earthenware pipes (common in pre-1970s homes in Sydney, Melbourne and Adelaide) or a history of slow drains; and any time you're about to spend money on relining or excavation. You don't dig up a driveway on a guess.

A good CCTV inspection comes with the footage, not just a verbal summary. Ask for the video file and a written report with the distance markers — you'll need them if you go to a second plumber for a relining quote, and your insurer may ask for them too. The cctv drain inspection cost is the cheapest part of a root job; skipping it is the expensive part.

What do after-hours and emergency blocked drain callouts cost? {#after-hours}

An after-hours or weekend blocked drain callout costs $528 inc. GST for a standard eel clear on Leadkit's rate card, and a same-day emergency callout costs $594 — compared with $462 in business hours. The market adds $100–$300 to standard rates for after-hours work, and some plumbers also lift the hourly rate on labour-based jobs.

Here's how the timing multipliers work on the Leadkit rate card:

Notice that the multiplier only applies to the callout, not to the clearing work. That's how most plumbers price it too: the eel or jetter costs the same on Saturday night, but getting a licensed plumber to your door does not.

Is a blocked drain an emergency? Sometimes. If sewage is backing up into the house, the overflow relief gully (ORG — the grated drain outside, usually near the laundry or kitchen wall, that's designed to overflow outside rather than inside) is surcharging, or you've got only one toilet and it's out of action, ring someone tonight. If a shower is draining slowly or one basin is blocked, put a bucket under it and wait for business hours. That single decision saves $66–$132 on the rate card and more in the wider market.

What pushes a blocked drain bill past $1,000? {#big-jobs}

A blocked drain bill goes past $1,000 when the blockage is a symptom of a damaged pipe — tree roots through a cracked joint, a collapsed section of old earthenware sewer, a belly (sag) in the line, or a broken boundary trap — rather than just something stuck in an intact one. On the rate card, the worst-case clear (emergency, hydro-jet, CCTV, difficult access) is $1,232 inc. GST; beyond that, you're paying for repair, not clearing.

Tree roots. The number-one cause of recurring sewer blockages in Australian suburbs. Roots find the moisture at a pipe joint, get in, and grow into a mass that catches everything. Cutting a heavy root mass runs $600–$1,200 in the market; but unless the entry point is sealed, they'll be back within 12–24 months. If the tree itself has to go, our tree removal cost guide for Sydney covers what that adds.

Pipe relining. Cured-in-place pipe (CIPP) relining inserts a resin-soaked liner into the existing pipe and cures it to form a new pipe inside the old one — no trench, no driveway cut. Sydney plumbers publish rates of roughly $400–$800 per metre in 2026, with short residential repairs of a few metres landing around $1,000–$4,000 and full sewer relines at $3,000–$12,000+. Junction reinstatements (cutting the liner open at each branch) add $150–$750 each.

Excavation and replacement. When the pipe is fully collapsed or badly misaligned, it has to be dug up. Budget from about $5,000 for a short, shallow run in a garden bed to $15,000+ where there's concrete, a driveway, deep pipes or council reinstatement involved.

Boundary trap replacement. The boundary trap is the water-sealed fitting at the property boundary that stops sewer gases coming back up your line; it's the wettest point on the lateral and a favourite for roots. Replacing one is a dig-and-replace job, often $1,500–$4,000 in the market depending on depth and access.

All of these figures are indications only. Your plumber will confirm the final price after assessing the job — and for anything past a simple clear, get a second quote.

Who pays — you, your landlord or the water authority? {#responsibility}

The property owner pays for a blocked drain anywhere on the private side of the connection — which in most Australian cities means everything from the house to the point where your sewer lateral joins the authority's main, and that point can sit past your fence line. The water authority (Sydney Water, Yarra Valley Water, Urban Utilities, the Water Corporation and so on) is responsible for the main and, if the blockage is in the main or affecting several properties, the fix is theirs.

Three quick rules:

• Inside the boundary — owner pays. Sinks, showers, toilets, internal drains and the private sewer line are the owner's problem. Sydney Water is explicit that the private sewer line runs from the house to its connection point, which may be beyond the fence.
• In the main, or a shared problem — authority pays. If sewage is coming out of a manhole in the street or your neighbours are blocked at the same time, call the water authority first, not a plumber. If they attend and find the fault is on your side, they'll tell you and you'll be back to paying for it yourself.
• Renting — landlord usually pays, unless you caused it. Wear and tear, tree roots and storm damage are the landlord's. A blockage from wet wipes, sanitary products or a kids' toy is fair game to be charged back to the tenant. Report it in writing the day you notice it.

The document that settles arguments is the sewer service diagram (or its state equivalent) — a plan showing where your private sewer runs and where it meets the main. Sydney Water issues these for NSW properties; other authorities have their own. A plumber will often pull it before a CCTV inspection so they know where to look.

And a licensing note that matters for cost: under NSW Fair Trading rules, all drainage work must be done by a licensed plumber and drainer. You can legally use a plunger or a hand-operated eel yourself, but the moment a job involves opening the drain, cutting roots or relining, it's licensed work — and unlicensed work can void your insurance. Victoria's Victorian Building Authority and Queensland's QBCC run equivalent licensing schemes. Check the licence before you pay a deposit.

How do blocked drain costs vary across Australian cities? {#by-city}

Blocked drain costs in 2026 run about 10–20% higher in Sydney than the national figures, sit close to the national benchmark in Melbourne and Brisbane, and are broadly similar in Perth and Adelaide once you factor in fewer after-hours operators outside the CBD. Leadkit's plumbing calculator runs on one national rate card, so the city differences below are market observations from plumbers' published price guides — not calculator data.

Sydney. Standard drain clearing is typically $150–$500, with jetting or CCTV-diagnosed jobs pushing to $600, and tree-root or collapsed-pipe jobs from $1,000 to $5,000. Sydney's mix of pre-war terraces, earthenware sewers and mature street trees (liquidambars and camphor laurels are the usual suspects) means CCTV is recommended more often here than anywhere else.

Melbourne. Blocked drain plumber cost sits around $300–$750, with single-fixture jobs from $300 and a mainline jet-plus-camera package at $500–$750. Our Melbourne plumber callout cost guide has the full callout and hourly picture.

Brisbane and the Gold Coast. $150–$600 for standard blockages, exceeding $800 for jetting or root removal. Wet-season stormwater blockages (leaf litter, silt) are a Queensland speciality, and jetting is the standard fix. Callout fees up here sit close to the national $120 benchmark.

Perth and Adelaide. Similar standard-clear pricing to the national benchmark. Both cities have a lot of older clay pipework and reactive soils, which means cracked joints and root intrusion are common — budget for the CCTV.

Whatever the city, the shape of the bill is the same: callout + method + optional camera + access + timing. Plug your own combination into the calculator and you'll see how close the national rate card sits to the local quotes you're getting.

Are you a plumber? Embed a free Leadkit calculator on your own site with your own rates — customers get an instant estimate, you get the lead with their contact details and job type before you've picked up the phone.

How to keep your blocked drain cost down {#save-money}

The cheapest blocked drain is the one you clear in business hours, with the right method the first time, on a pipe you've already had a camera through. In practice that means:

1. Wait for business hours if you safely can. It's the difference between $462 and $594 on the rate card, and $100–$300 in the wider market. A bucket and a plunger buy you a night.
2. Try the legal DIY options first. A plunger, a hand eel from Bunnings ($20–$60), and boiling water plus bicarb on a greasy kitchen line clear a surprising number of single-fixture blockages. Skip the caustic chemical drain cleaners — they damage older pipes and plumbers hate working in them.
3. Ask for a fixed price for the clear, not an hourly rate. Most drain plumbers quote a flat job cost; if one wants to charge hourly for an eel job, ask why.
4. Get the CCTV on any recurring blockage. It's $275 inc. GST on the rate card. Paying $462 three times in a year for the same root mass is $1,386 — and the roots are still there.
5. Get two quotes for anything past a clear. Relining and excavation quotes vary enormously. Bring the CCTV footage and the distance markers to the second plumber.
6. Check the licence and the invoice. A licensed plumber and drainer, an ABN on the invoice, and GST shown separately. If any of those are missing, walk.
7. Fix the cause. Root barriers, a tree removal, a new boundary trap or a short reline at the entry point costs more today and less over five years than a clear every eight months.

Frequently asked questions {#faqs}

Q: How much does it cost to unblock a drain in Australia?

A: Unblocking a drain in Australia costs $462–$1,232 inc. GST on Leadkit's 2026 plumbing rate card, with the wider market ranging from $150 for a simple single-fixture clear to $900 for high-pressure jetting. The biggest factors are the method (electric eel is cheaper than hydro-jet), whether a CCTV inspection is included, how hard the drain is to access, and whether you call in business hours or after hours. If the blockage is caused by tree roots or a broken pipe, the bill can move into the thousands for relining or excavation. Get a ballpark for your combination with the quote calculators in Leadkit's library — price indication only; your plumber confirms the final price on site.

Q: How much does a plumber charge to unblock a toilet?

A: A blocked toilet costs $180–$400 to clear across the Australian market in 2026, with the lower end covering a plunger-and-closet-auger job in business hours and the upper end covering a toilet that's blocked because the sewer line behind it is blocked. On Leadkit's rate card, a blocked toilet that needs an electric eel through the line is priced like any other drain clear — $462 inc. GST in business hours. If the plumber has to pull the toilet off to reach the blockage, expect extra labour and a new pan collar. This is a price indication only.

Q: Is hydro-jetting worth the extra cost over an electric eel?

A: Hydro-jetting is worth the extra $165 inc. GST when the blockage is grease, silt, leaf litter or a root mass, or when the same drain has blocked more than once. An electric eel punches a hole through a blockage; a jetter scours the full diameter of the pipe and flushes the debris out, so the clear lasts longer. For a first-time blocked shower or basin with an obvious cause, the eel is fine and cheaper. Ask the plumber which they recommend and why before they start.

Q: How much is a CCTV drain inspection?

A: A CCTV drain inspection costs $275 inc. GST as an add-on to a drain clear on Leadkit's plumbing rate card, and $200–$600 as a stand-alone job across the market. It uses a camera on a flexible rod to show exactly where and why the pipe is blocked. It's worth paying for on any recurring blockage, any suspected tree-root problem and before any relining or excavation quote. Ask for the video file and the distance markers in writing — you'll want them for a second quote and possibly for insurance.

Q: Does home insurance cover a blocked drain?

A: Most Australian home insurance policies don't cover clearing a blocked drain itself, because blockages are treated as maintenance. What many policies do cover is the resulting damage — for example, water damage to flooring from a sewer backup — and some cover "escape of liquid" from a burst or broken pipe, sometimes including the cost of locating the leak. Tree-root damage to underground pipes is commonly excluded, though a few insurers offer it as an optional extra. Check your product disclosure statement and keep the CCTV footage; it's the evidence an assessor will ask for.

Q: Who is responsible for a blocked sewer drain — me or the water authority?

A: The property owner is responsible for any blockage in the private sewer line, which runs from the house to the point where it connects to the water authority's main — and that connection point can sit past your fence line. The water authority (Sydney Water, Yarra Valley Water, Urban Utilities and so on) is responsible for the main itself. If sewage is coming from a manhole in the street or your neighbours are affected too, call the authority first. If you're renting, blockages from wear and tear or tree roots are the landlord's cost; blockages you caused (wet wipes, sanitary items) can be charged to you.

Q: Can I unblock a drain myself, or do I need a licensed plumber?

A: You can legally use a plunger, a hand-operated drain eel or a hot-water-and-bicarb flush yourself in every Australian state, and those clear a good share of single-fixture blockages. Anything beyond that — opening an inspection point, running a motorised eel or jetter, cutting roots, relining or replacing pipe — is licensed drainage work under NSW Fair Trading, VBA and QBCC rules. Unlicensed work can void insurance and doesn't come with a warranty. Our complete plumbing guide covers what's DIY-legal and what isn't across the common jobs.

Q: Why does my drain keep blocking, and what does it cost to fix for good?

A: A drain that keeps blocking usually has a structural cause — tree roots at a cracked joint, a sagging section that holds water and silt, or a damaged boundary trap — and clearing it only treats the symptom. Fixing it for good means a CCTV inspection ($275 inc. GST on Leadkit's rate card) to find the fault, then either a short pipe reline (market rate roughly $400–$800 per metre in Sydney, $1,000–$4,000 for a typical short repair) or, for a collapsed pipe, excavation from around $5,000. It's more than a $462 clear, but three clears a year gets you to that number quickly with the problem still in the ground. Prices are indications only.

Get a blocked drain quote in 30 seconds {#final-cta}

You now know the shape of the bill: a callout fee, a flat clearing cost that depends on eel or jet, an optional camera, an access surcharge, and a timing multiplier. Most blocked drains in Australia land between $462 and $737 inc. GST on Leadkit's rate card; the ones that don't are the ones where the pipe itself is the problem.

Before you ring around, run your own combination through a calculator so you can tell a fair quote from a padded one — and if the plumber recommends the camera on a recurring blockage, say yes.

Want an instant price estimate? Use the free plumbing quote calculators — takes 30 seconds, no signup. Results are a price indication only; your tradie will confirm the final price after assessing the job.

Authoritative sources referenced in this guide: NSW Fair Trading — plumbing and drainage licensing, Sydney Water — wastewater responsibilities and sewer service diagrams, Victorian Building Authority — plumbing registration and licensing, Queensland Building and Construction Commission. Market price ranges are drawn from published 2026 price guides of licensed Australian plumbers; rate-card figures are from Leadkit's own plumbing quote calculator.