Homeowners across Western Sydney are now asking the same question:
“Can I now build an 85m² granny flat instead of the old 60m² limit?”
The answer is:
In certain Western Sydney airport precinct areas — yes.
The NSW Government has recently amended planning rules affecting land around the new Western Sydney International Airport, allowing larger secondary dwellings of up to 85m² in selected lower-noise impact areas.
This change affects parts of:
and creates major opportunities for homeowners wanting larger granny flats, better rental returns, and more functional family living spaces.
Traditionally, detached granny flats in NSW were generally limited to:
However, the new Western Parkland City planning amendment now permits:
This is one of the biggest granny flat planning changes Western Sydney has seen in years.
An 85m² granny flat changes everything.
Instead of squeezing into a compact 2-bedroom layout, homeowners may now have room for:
For investors, this could also mean:
The new rules apply only to selected areas within the Western Sydney Airport precinct planning zones.
This includes parts of:
but does NOT apply to every suburb automatically.
Some higher-noise areas closer to the airport may still have restrictions or exclusions.
Yes.
Because these changes relate to airport planning controls, many granny flats may require:
This will likely become an important part of the approval and construction process moving forward.
The new legislation creates major opportunities for:
As Sydney housing affordability continues to tighten, larger granny flats are becoming increasingly attractive across Western Sydney.
The introduction of the new 85m² granny flat legislation is a major shift for parts of Western Sydney.
While standard NSW granny flat rules still generally remain at 60m², selected airport precinct areas may now qualify for significantly larger secondary dwellings under the updated planning controls.
At Kobo Projects, we help homeowners across Western Sydney understand the latest granny flat regulations, approval pathways, and construction requirements to maximise their property potential.
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The NSW Government has introduced major granny flat planning changes across parts of Western Sydney in 2026, with some homeowners now potentially able to build larger 85m² granny flats under the updated legislation.
This is one of the biggest changes to secondary dwelling rules in years and could significantly impact:
At Kobo Projects, we’re already seeing increased enquiries from homeowners across Fairfield, Liverpool, Blacktown, Camden, and surrounding Western Sydney suburbs wanting to understand how the new granny flat rules apply to their property.
Traditionally, detached granny flats in NSW have generally been limited to:
However, under the new 2026 Western Sydney airport precinct planning amendments, certain eligible properties may now be permitted to construct:
within selected lower aircraft noise impact areas surrounding the new Western Sydney International Airport.
This creates new opportunities for larger granny flat layouts and more functional designs throughout parts of Western Sydney.
The new 85m² granny flat legislation may apply to selected properties within parts of:
However, not every property automatically qualifies.
Eligibility will depend on:
Some properties located closer to higher aircraft noise corridors may still face additional restrictions or acoustic requirements.
The previous 60m² limitation often forced homeowners into compact layouts with limited storage and smaller living areas.
An 85m² granny flat creates significantly more flexibility, allowing for:
For investors and homeowners, this can improve:
In many Western Sydney suburbs, larger granny flats are becoming increasingly attractive due to:
A larger granny flat may provide:
Well-designed secondary dwellings are now being viewed as long-term investment assets rather than basic backyard accommodation.
Yes.
Because the legislation relates to land surrounding the new Western Sydney Airport precinct, some developments may require:
These requirements are intended to reduce aircraft noise impacts and maintain internal living comfort.
This makes builder experience and proper planning advice increasingly important.
In many situations, complying development (CDC) approval pathways may still apply, however:
will need to be carefully assessed before proceeding.
Some properties may instead require a Development Application (DA) depending on the design and planning constraints.
Demand for granny flats across Western Sydney remains extremely strong throughout 2026, particularly in suburbs such as:
Homeowners are increasingly building granny flats for:
The introduction of larger 85m² granny flats may further accelerate this trend.
With changing legislation and increasing construction requirements, choosing an experienced builder is critical.
At Kobo Projects, we specialise in custom granny flats across Sydney and Western Sydney, delivering:
We work closely with homeowners, designers, certifiers, and consultants to help navigate approvals and maximise property potential.
The introduction of the new 85m² granny flat legislation marks a major shift for selected areas across Western Sydney.
While standard NSW granny flat rules have traditionally remained capped at 60m² internal area, the new planning amendments may now allow larger and more functional secondary dwellings within eligible airport precinct zones.
For homeowners, investors, and families, this creates exciting new opportunities for:
If you’re considering building a granny flat in Western Sydney and want to understand whether your property may qualify under the new 85m² rules, contact Kobo Projects today.
Kobo Projects are one of the leading residential and commercial builders in Sydney, taking immense pride in our approachability, quality craftmanship, eye for precision, and client focused approach to building. You can trust Kobo to build your dream.
