A blocked drain is one of those rental problems nobody wants to own.
The tenant says it’s the plumbing.
The landlord says it’s what went down the drain.
The property manager gets stuck in the middle.
The simple answer is this:
If the blockage was caused by the tenant, their guest, or something put down the drain during the tenancy, the tenant may be responsible.
If the blockage comes from old pipes, tree roots, collapsed drains, stormwater problems, poor drainage, or normal wear, it’s usually the landlord’s responsibility.
That’s the general rule.
The hard part is proving what caused it.
This page is general information for WA landlords and property managers. It’s not legal advice. If there’s a dispute, check Consumer Protection WA or get proper advice.
The Usual Rule
Blocked drains come down to cause.
Not mood. Not guesswork. Cause.
If a plumber or maintenance contractor finds wipes, nappies, cooking fat, food scraps, sanitary products, toys, hair buildup from poor use, or something that clearly shouldn’t have gone down the drain, that points toward tenant-caused damage.
If they find tree roots, old pipework, collapsed drains, cracked clay pipes, stormwater backup, building movement, or age-related failure, that points toward landlord maintenance.
Sometimes it’s obvious.
Sometimes it isn’t.
That’s why the first step is usually getting someone out to assess it properly.
Common Blocked Drain Causes And Who Usually Pays
Wipes, nappies and sanitary products
This is usually tenant responsibility if that’s what caused the blockage.
Even “flushable” wipes are a problem. They don’t break down like toilet paper. They catch in pipework and build up until the toilet, shower or floor drain backs up.
If the blockage is cleared and the cause is obvious, the report should say so.
Cooking fat and food waste
Kitchen drains often block because fat, oil, rice, pasta, coffee grounds and food scraps go down the sink.
Fat cools inside the pipe and sticks to the walls. Then food catches on it. Then the sink starts draining slowly.
If the blockage is caused by what was put down the sink, that usually points back to tenant use.
Hair and soap buildup
Bathroom drains block from hair, soap, shampoo residue and general use.
This one can be messy.
A bit of buildup is normal. A heavy blockage from hair and poor cleaning may point toward tenant responsibility.
If the bathroom drains have always been slow, or multiple drains are affected, it may be a bigger plumbing issue.
Tree roots
Tree roots are usually landlord responsibility.
The tenant didn’t grow roots through the pipe.
Older Perth properties with clay pipes, mature trees, garden beds and old drainage lines can get root intrusion over time.
A plumber may need to clear the blockage and camera the line to confirm what’s going on.
Old or collapsed pipes
Old pipes, cracked drains, sagging pipework and collapsed sections are usually landlord responsibility.
That’s property maintenance.
The tenant can’t maintain pipework they can’t see.
If drains keep blocking after being cleared, don’t keep blaming whoever used the sink last. There may be a deeper issue.
Stormwater and outside drains
Blocked stormwater drains are usually a property maintenance issue unless the tenant has caused the blockage.
Leaves, sand, soil, roots and poor drainage can all cause stormwater problems around a rental.
If water is pooling near doors, patios, garages, fences or foundations, don’t leave it. Water problems get expensive quickly.
Toys or foreign objects
If a toy, bottle cap, cloth, makeup item, toothbrush, or other random object is found in the drain, tenant responsibility is more likely.
Especially if the object clearly came from inside the home.
What The Landlord Should Do First
Don’t argue before you know what caused it.
Get the blockage checked.
For landlords and property managers, the process should be simple:
Ask for photos or a clear description
Which drain is blocked? Toilet, kitchen sink, shower, laundry, outside drain, whole house?
Find out how urgent it is
A slow-draining sink is different from sewage backing up into the bathroom.
Book the right contractor
If it’s plumbing, use a plumber. If it’s exterior drainage, stormwater, clean-up, access, or follow-up maintenance, use the right maintenance support.
Get notes on the cause
The invoice or job note should say what caused the blockage where possible.
Keep photos and reports
Useful for owner approval, tenant communication, and disputes.
Don’t make a payment decision before the cause is clear.
When A Blocked Drain Is Urgent
Some blocked drains are just annoying.
Some need fast action.
A blocked drain becomes urgent when it affects toilets, sewage, shower use, basic hygiene, flooding, property damage, or safe use of the home.
Examples:
Toilet backing up
Sewage smell or overflow
Shower or bathroom drain flooding
Kitchen sink completely unusable
Water entering the house
Stormwater pooling against the building
Blocked drain causing damage
In WA, urgent repairs have specific time expectations. Essential service repairs need to be acted on faster than other urgent repairs, and tenants may have options if the landlord or property manager can’t be contacted or doesn’t act within the required time. Keep this general on the page and link to the official WA repair guidance rather than trying to explain every legal pathway.
What Tenants Should Do
Tenants should report the issue quickly.
Don’t wait three weeks and then say the drain has been unusable the whole time.
A useful report includes:
Which drain is blocked
When it started
Whether it’s getting worse
Whether water or sewage is backing up
Photos or video if possible
Whether any other drains are affected
Tenants shouldn’t keep using a blocked drain if it’s causing overflow or damage.
They also shouldn’t put chemicals down every drain and hope for the best. That can make things worse, damage fittings, or make the contractor’s job harder.
What Property Managers Should Record
Blocked drains can turn into responsibility disputes, so the record matters.
For each job, keep:
Tenant report
Photos or video
Time and date reported
Contractor notes
Cause of blockage if found
Invoice
Any camera report if done
Before and after notes
Any follow-up maintenance required
The cleaner the record, the easier it is to explain the cost to the owner or tenant.
“Drain cleared” isn’t enough if someone is disputing the bill.
“Kitchen sink blocked by food waste and fat buildup” is much clearer.
So is “sewer line blocked by tree roots near rear boundary.”
Blocked Drains In Perth Rentals
Perth rentals see a mix of blocked-drain problems.
Older suburbs often have older pipework, tree roots and clay drains.
Newer homes can still block from wipes, fat, hair, poor falls, or cheap drainage work.
Strata properties can be trickier because one blocked line may affect more than one unit. Common drains, shared plumbing, courtyards, balconies and stormwater systems need to be checked carefully.
For property managers, the big thing is speed.
Not panic.
Just don’t let water and waste problems sit.
Who Pays For The Blocked Drain?
Once the cause is known, responsibility is easier to work through.
Tenant usually pays when:
The blockage was caused by misuse
Wipes, nappies, sanitary items, food scraps, grease, toys, cloth, or other foreign objects.
A guest caused the blockage
Tenants are usually responsible for damage caused by their guests.
The tenant ignored the issue and made it worse
For example, continuing to use a blocked drain until it overflows and damages flooring.
Landlord usually pays when:
The blockage is from tree roots
Roots in old drains are a property issue.
The pipe is old, broken or collapsed
That’s maintenance.
The drain failed through normal wear
Age-related failure is not tenant misuse.
Stormwater or site drainage is the issue
Unless the tenant caused the blockage, exterior drainage is generally part of maintaining the property.
Sometimes it needs more evidence
Not every blockage gives a perfect answer.
If the plumber clears the drain but can’t identify the cause, be careful about blaming either side too quickly.
If the same drain blocks again, get a better diagnosis.
Repeated blockages usually mean something is being missed.
Can The Cost Come Out Of The Bond?
Don’t jump straight to the bond.
If the tenant clearly caused the blockage and there’s evidence, the cost may be recoverable through the usual process.
But the bond is not a shortcut for vague maintenance costs.
You need records.
Photos, contractor notes, invoices, and a clear explanation of cause.
If it’s tree roots, old pipes or a collapsed drain, it’s not a tenant bond issue.
How To Avoid Repeat Blocked Drains
Some blockages are preventable.
Some aren’t.
For landlords and property managers, prevention looks like this:
Check slow drains during routine inspections
A slow drain is often the warning.
Keep trees and garden beds away from old drainage lines where possible
Roots love old pipes.
Clean gutters and external drains before winter
Blocked stormwater creates bigger property problems.
Give tenants simple drain-use guidance
No wipes. No grease. No food waste down the sink. No sanitary items in the toilet.
Act on repeat issues
If the same drain blocks twice, don’t treat it like a one-off.
Fix outside water problems early
Pooling water near fences, paths, patios and walls usually causes other maintenance problems later.
PMPWA Can Help With The Follow-Up Work
A blocked drain often leaves other jobs behind.
Water damage. Swollen doors. Damaged skirting. Damp cabinets. Gate or fence movement from poor drainage. Exterior clean-up. Access issues. Minor patching. General maintenance after the plumber has cleared the line.
That’s where PMPWA fits.
We help landlords, property managers and strata managers with rental maintenance.
Blocked Drain FAQs
Is a blocked drain the tenant’s responsibility?
Only if the tenant, their guest, or their use caused the blockage. Wipes, grease, food scraps, sanitary products and foreign objects usually point toward tenant responsibility. Tree roots, old pipes and collapsed drains usually point toward landlord maintenance.
Is a blocked toilet an urgent repair?
It can be, especially if there’s no working toilet, sewage backup, flooding, or the property can’t be used safely. WA has urgent repair rules, so landlords and property managers should act quickly and check the official guidance.
Who pays if tree roots block the drain?
Usually the landlord. Tree roots are normally a property maintenance issue, especially in older homes with older pipework.
What if the plumber can’t prove what caused the blockage?
Then be careful about assigning the cost. Keep the invoice and notes. If the blockage happens again, get a clearer diagnosis, such as further inspection or camera work if the plumber recommends it.
Can a landlord charge a tenant for drain clearing?
They may be able to if the blockage was caused by tenant misuse and there’s evidence. The contractor’s notes matter here. Without a clear cause, it’s harder to fairly pass the cost on.
Should tenants use chemical drain cleaners?
Usually not the best first move. They can damage fittings, fail to clear the blockage, or create hazards for the contractor. Reporting the issue properly is safer.
What should property managers ask the plumber for?
Ask for the cause of the blockage, what was cleared, whether there are signs of old pipe damage, whether roots were involved, and whether follow-up work is needed. Photos or camera notes help if costs are disputed.
Need Rental Maintenance Sorted After A Blocked Drain?
If a blocked drain has left damage behind, or your rental has a list of maintenance issues building up, PMPWA can help.
Send through the property address, photos, and a quick summary of what needs fixing. Contact us today.
