What typically causes blocked drains in Double Bay?

The most frequent causes in Double Bay are tree root intrusion into ageing clay and terracotta pipes, fat and grease build-up in kitchen drains, and general wear on pipe joints in homes built before the 1970s. The area's mature Moreton Bay figs and other established trees are especially aggressive at finding cracks in old sewer lines.

How much does it cost to clear a blocked drain in Double Bay?

A straightforward blockage cleared with an electric eel or basic jetting typically ranges from $120 to $300. More complex jobs involving CCTV inspection and high-pressure jetting to remove tree roots usually fall between $350 and $800. Pipe relining for permanently damaged sections can range from $500 to $1,200 per metre depending on pipe diameter and access.

Is the blockage my responsibility or Sydney Water's?

If the blockage sits within pipes that only serve your property — such as your internal plumbing, kitchen, bathroom, or private sewer lateral — you are responsible for the repair. If the issue affects shared infrastructure or a public sewer main (for example, sewage backing up from a street manhole), Sydney Water handles it. You can call Sydney Water's 24/7 faults line on 13 20 90 to report issues on public land.

Can a plumber fix a blocked drain without digging up my property?

Yes. In most cases, blocked drains in Double Bay can be cleared and repaired using trenchless methods. High-pressure water jetting clears roots and debris, and CCTV cameras locate damage. If pipes need permanent repair, pipe relining inserts a new lining inside the old pipe without excavation — particularly important in Double Bay where landscaped gardens, driveways, and heritage features need to remain intact.

How quickly can you get to Double Bay for a blocked drain?

We offer same-day service across Double Bay and the surrounding Eastern Suburbs. For urgent situations like sewage overflow or flooding, we prioritise emergency callouts and aim to be on-site as fast as possible, including nights, weekends, and public holidays.

Blocked Drains Double Bay - Plumber Sydney

Why It Happens Here

Why are Double Bay Drains So Easily Blocked

It is not a newly developed housing estate where all things are PVC and newly wired. There are certain underground conditions in this suburb which plumbers in Sydney understand as being a high-risk factor in the occurrence of reoccurring drain issues.

The Double Bay Underground Picture

The residential plumbing at Double Bay was mostly installed in the period between 1920s and 1960s. That is to say that wastewater is still transported by terracotta pipes and earthenware pipes, which are laid in one-metre sections, cement-mortared together, underneath most of the homes and apartment blocks of the suburb. The weak point is these joints. Over the decades they are loosened by the movement of the ground, the root pressure and simple wear, creating gaps into which the moisture can trickle into the soil around. And as the moisture flows away, the roots of trees pursue it back.

The renowned streetscape in the area has a back price. The streets between New South Head Road and the harbour foreshore have mature Moreton bay figs, camphor laurels and other native gums. They have root systems that are expansive and do not observe property boundaries or pipe materials. The four problems which we most frequently meet on jobs on the drains of Doubleday are:

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Tree Root Infiltration

Figs, liquidambars, and eucalypts roots creep into joints of cracked clay pipes. When they get inside, they create thick mats which trap garbage and constrict the pipe till the flow ceases. Roots go deeper and further towards sewer pipes in dry periods as the pipes are a sure source of water.

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Ageing Clay & Terracotta Pipes

Decades in the Eastern Suburbs of Sydney used terracotta as the common material of pipes. It worked, but these pipes are frail and they break. The erosion is enhanced by the fact that ground shift of the soil in the area around the harbour is sandstone and clay soil, which is prone to erosion especially on slopes.

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Grease and Food Build-Up

The commercial kitchens emptying fats, oils and food waste empty into the sewer systems of the busy cafes and restaurants strip in the Bay Street and Cross Street, Double Bay. Even residential kitchens add their parts, cooking oil solidifies as it cools in pipes gradually becoming stratified until the pipe is so thin that it can barely hold any more.

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Post-Rain Stormwater Overload

During a heavy rainfall on the east side of Sydney, the drainage system in the area of Double Bay (draining to the harbour) may not be able to cope. Several points of cross-connection between storm water and sewer systems (unusual in more recent constructions) can result in backflow, surcharging, and overflow of floor drains or gullies.

A Few Numbers Worth Knowing

According to Sydney Water, it is clearing on average approximately 20,000 blockages of waste water in the network annually with a total cost of approximately 27 million. A large percentage of them are due to accumulated fats and objects that are not to be flushed (wet wipes, sanitary products, cotton buds). Most frequent sewer blockages in suburbs with an older pipe system are caused by tree root intrusion on the private property side, and the Eastern Suburbs, including Double Bay, Woollahra, Paddington and Bondi, has consistently had one of the highest rates of such blockages due to its old pipe systems.

In the event that there is a blockage in a main sewer of Sydney Water, they will take up the repair. However, when the problem lies in the pipes in your backyard, as is the case in most instances, it is your business. Being aware of the boundary would save you time and money. We assist property owners in Double Bay to work this out before they have to do any unnecessary work.

Know Before It Gets Worse.

6 Red Flags You have a Drain Blockage.

Blocked drain seldom occurs spontaneously. Early warning signs are present almost always, people just choose to turn a blind eye until something bursts. The following are some of the things that you need to watch out in your property at Double Bay, and it would be prudent to have a drain inspection done before the issue gets out of control.

Sinks or Showers that drain slowly

Puddling of water at your feet in the shower or lingering in the basin even longer than normal. This implies there is an obstruction to flow down the stream.

Noises in Pipes

The bubbling noise that you hear when flushing the toilet or draining the bathtub is air that is trying to pass through an obstruction that is not completely blocked. The louder it becomes the worse the blockage becomes.

Bad Smells around drains

Rotten-egg smell that emanates through floor drains, sinks or the gully tap outside. Stagnant water confined behind some blockage will give rise to hydrogen sulphide gas.

Water Backing up into other Fixtures

You turn on the toilet and the drain of the shower gurgles or the other way round. This cross-contamination implies that the primary sewer line is half or completely clogged.

Overflow From the Outdoor Gully Trap

The relief gully by your outside tap is meant to relieve the pressure caused by obstructions prior to sewage getting into your house. In case it is overflowing, call right away.

Abnormally Green or Moist Spots on the Lawn

An underground pipe feeds the soil directly, with moisture and nutrients pouring into the soil by a leaking or broken pipe. When one part of your garden appears unnaturally green, then there could be a pipe problem under it.

How We Work

How we do Blocked Drains in Double Bay

We do not merely get the blockage out of the way. It is this strategy that makes many individuals make three or four calls to a plumber each year to resolve the same issue. This is how we do things differently.

Discuss the Issue.

We begin by inquiring, what you have observed, when it began, what drains are involved, how frequent it is. This can assist us in getting there with the correct equipment and get the probable cause narrowed down before we even open an access point.

CCTV Drain Camera Inspection.

We send a little waterproofed camera up the pipe to find out just what is happening, root of the trees, grease, places where they have fallen down, loose joints, foreign bodies. Our real time monitor shows you the footage, thus, there is no guesswork, no unnecessary work.

Clear the Blockage

We can blast through grease, silt and roots using high-pressure water jetting (up to 5,000 PSI) or mechanical cutting heads to cut through larger root masses. We like jetting, and this does not merely drill a hole through the blockage, but scrubs the inside of the whole pipe.

Post-Clear Inspection

When we clear, we repeat the camera. This proves that the blockage is no longer present and indicates the true state of the pipe. In case of cracks, root damage or displacement, we will point it out and explain what it will mean to the long term.

Suggest a Permanent Repair (Where Necessary)

In the case of pipes which are cracked or structurally non-coherent, we will look into options such as trenchless pipe relining where a new resin-coated lining is cured on the inside of your existing pipe, overcoming cracks and forming a smooth root-proof surface without excavation in your Double Bay grounds. The majority of relining work is accomplished in a day.

Transparent Pricing

The average cost of What Blocked Drain Repairs in Double Bay.

Each job is unique but here is a practical guide depending on the kind of blocked drain work that we undertake on a regular basis throughout the Eastern Suburbs. Before we begin we will always give you a fixed quote, no surprises on your bill.

Service	Typical Price Range	What’s Included
Basic drain clearing (electric eel)	$120 -250	clearing 1 clogged drain (sink, toilet, shower). Appropriate in minor obstructions around the fitting.
Water jetting under high pressure	300 -600	Full pipe jetting to remove grease, silt, roots. Removes all the inside of the pipe, not only the blockage point.
CCTV drain inspection camera	$200 -400	Camera inspection of your drain or stormwater line. Incorporates captured video and a verbal condition report.
Removal of tree roots + jetting	$350 -800	Mechanical cut-offs of root masses and then jetting. Price is based on depth of root and accessibility of the pipes.
Pipe relining (per metre)	$500 -1200	Trenchless repair which lays a new lining on the inside of damaged pipe. Most times no digging needed. Normal product warranty of 50 years.
Emergency after-hours callout	Starting at $250	Callout on priority after business hours. Includes initial assessment and clearing. Additional work at the site.

All prices are indicative and are inclusive of GST. We give a written and fixed quote prior to any work being done. No extra charges, no charges per hour that creep up. The price of your quote is your last price.

Keep Your Drains Clean.

A Step-by-step Guide to avoid blocked drains at your Double Bay Property.

The age of your pipes and the location of your trees are out of your control, but there are simple measures you can take to minimize the number of blockages and prevent emergency callouts.

Do Not pour cooking oil down the sink

Allow fats to cool in a container and put them in the bin. Even little quantities of oil stick in pipes and form an oily surface, which sticks to everything else. This is the leading cause of blockages in kitchen drains in homes and restaurants in the area of Double bay.

Install Drain Strainers in All Wet Areas

An easy mesh strainer placed over your shower, bath and laundry drains collects hair, bits of soap, and debris before they enter the pipe. They can be purchased at a few dollars and will save hundreds of dollars in plumbing callouts in the future.

Only Flush Toilet Paper

The most significant source of sewer blockages in Sydney is wet wipes including those that are labeled as flushable. Sanitary items (cotton buds, tissues), should be in the bin at all times. Unless it is on a roll of toilet paper, it will not go down the toilet.

Know Where Your Trees Are Relative to Your Pipes

Sydney Water has a Tap in® online portal where you can get a sewerage service diagram of your property in Double Bay. It indicates the location of sewer lines on your block. Where you are planting anything new, make sure that it is at least 3 to 6 metres away along the pipe runs. Your local nursery will be able to suggest less invasive species of roots.

Have a Drain Camera Inspection Every 12-18 Months

In the case of properties having old pipes or existing trees, a routine CCTV check up identifies root growth, initial cracks and grease deposits before a complete blockage occurs. It costs a few hundred (200-400 dollars) which will save a 2,000+ emergency repair.

Never use Chemical Drain Cleaner

Draining chemicals may temporarily relocate a small obstruction, but in the long run they erode clay and terracotta pipes internally. Chemical cleaners of old homes in Double Bay tend to hasten the process of pipes corroding and cause more serious issues in the future.

Who Pays for What

Is It Your Blocked Drain or that of Sydney Water?

This is among the most frequent inquiries we receive among property owners in Double Bay and the answer is not always that clear. This is how to make the difference.

Your Pipes, Your Property.

Should the blockage be in drains which serve only your house, internal plumbing, your own sewer lateral between the house and the boundary, or the drainage of the bathroom and kitchen, or the gully tap outside your external tap, then it is up to you. This is regardless of whether you are a landlord or tenant (although landlords usually cover the cost in structural plumbing problems). The City of Sydney can also advise the property owners to hire a licensed plumber to investigate and repair any broken or blocked sewer systems in cases where premises is not being maintained in a safe condition.

Sydney Water's Network

When the sewage is overflowing out of a manhole in the street, the footpath, or the land, or several neighbouring properties are having the same problem simultaneously, the problem is probably in the main sewer of the Sydney Water. Call their 24/7 faults line on 13 20 90 to report it. In certain situations where you or your plumber is given permission by Sydney Water to investigate or repair their infrastructure, then you can claim reimbursement of the work.

We assist customers of Double Bay to go through this. Should we examine your drains and discover that the blockage is on the side of Sydney Water we shall advise you as much as we will refer you to the right path, we will not run you a bill to do your job which we are not to pay.

Common Questions

Blocked Drains in Double Bay, Ask us a Question

The top reasons are tree roots intrusion into old clay and terracotta pipes, fat and grease accumulation in kitchen drains and overall pipe joint corrosion in homes constructed prior to the 1970s. Mature figs and native gums in Double Bay are particularly violent in locating cracks in older sewer lines. Due to the combination of residential houses, apartment buildings and commercial kitchens around Bay Street, we regularly encounter a variety of blockage types.

An up-to-basic blockage that could be cleared using an electric eel or simple jetting would cost between 120 and 300 dollars. More complicated tasks, such as CCTV inspection and high-pressure jetting of tree roots, tend to range between 350 and 800. In case of pipes requiring relining, this is a bigger investment of between 500-1200 a metre, although this will ensure the same issue does not happen again every year. Before we commence any work we always offer a fixed quote.

That is based on the causative factor. In the case of a single instance of grease accumulation, jetting will probably correct the problem in the long run. However, when tree roots have penetrated through broken pipes, they will regenerate, which typically takes 6 to 18 months. In such instances, we suggest pipe relining to completely close the points of entry. It is more expensive initially, but it will end the loop of having to pay to have root clearances done again and again.

Yes, in the majority of cases. Mechanical clearing and high-pressure jetting does not involve excavation. To perform structural repairs, trenchless pipe relining involves working within the inside of the existing pipe and does not require any trenching over your Double Bay premises. It is especially relevant here with a large proportion of homes possessing landscaped gardens, paved courtyards or heritage elements and it would be expensive to re-create these following the traditional excavation.

Not always. A blocked toilet is a local, easy problem, something caught in the trap that can be cleared off by use of a plunger. However, when your toilet is filling up with slow drainage in other areas of the house (sinks, showers, laundry) it is typically an indication of a blockage deeper down the main sewer line. That needs the professional equipment to diagnose and clear.

We do. There are many apartment complexes and buildings managed by strata in Double Bay, many of which have shared drainage systems and need co-ordination between residents and the strata manager. Our team collaborates with strata managers in the Eastern Suburbs and is able to deliver inspection reports, maintenance plans, and priority-of-response to common-area plumbing problems. All you need to get started is a work order that is sent to our team.

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Blocked Drains in Double Bay, Cleared, Fixed, Properly

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