Western Sydney Granny Flat Ban Lifted in Lower Airport Noise Zones

NSW reversed a six-year ban on secondary dwellings in lower aircraft noise areas near Western Sydney International Airport from 19 can 2026, allowing granny flats up to 85 sqm with noise attenuation in the ANEC 20–25 contour. For western sydney granny flat ban lifted, Updated 23 June 2026.

The NSW Government ministerial release and ABC News confirm amendments to the Western Parkland City State Environmental Planning Policy. This is Tier A planning news: verify your lot with council and a certifier before committing to design.

Disclaimer: This article is general information only, not planning, legal, or tax advice. Rules change by zone and lot. Confirm with NSW Planning, your council, and an accredited certifier.

What changed on 19 can 2026

Secondary dwellings including granny flats and studios are again permitted on eligible land within the Australian Noise Exposure Concept (ANEC) 20–25 contour, which marks areas forecast to experience lower long-term aircraft noise under Western Sydney International Airport scenarios.

New dwellings must be capped at 85 square metres and include noise attenuation measures such as double-glazed windows to meet indoor sound level requirements linked to airport planning.

Higher-noise zones remain restricted. Luddenham, Bringelly, and Badger’s Creek suburbs closest to the airport are excluded from the reversal, ABC reported.

Which LGAs are affected

Eligible land spans parts of Wollondilly, Camden, Fairfield, Liverpool, and Penrith local government areas. Horsley Park in Fairfield received specific attention in Fairfield City Council’s can 2026 update welcoming partial restoration of secondary dwelling rights under the 20 ANEC corridor.

Your lot must fall inside the mapped contour and meet underlying zoning, not merely sit inside one of those LGAs by postcode.

Confirm setbacks, fees and supplier inclusions with your council or certifier before you sign. SEPP, CDC and DA pathways differ by state, lot size and overlays such as heritage or flood. Use our planning tools for ballpark figures, then verify with a private certifier or council planner when your design is settled.

Why the ban existed and why it lifted

Late 2020 planning controls aimed to limit new noise-sensitive housing in areas facing higher forecast aircraft noise as WSI approached opening. Planning Minister Paul Scully told ABC that long-term noise modelling and flight path work now allow targeted relief in lower-impact contours while keeping restrictions where noise remains material.

Housing Industry Association commentary cited by Yahoo Finance noted sharply rising granny flat construction nationally, making Western Sydney’s ban a visible outlier until can 2026.

Confirm setbacks, fees and supplier inclusions with your council or certifier before you sign. SEPP, CDC and DA pathways differ by state, lot size and overlays such as heritage or flood. Use our planning tools for ballpark figures, then verify with a private certifier or council planner when your design is settled.

How this interacts with Housing SEPP rules

General secondary dwelling standards under NSW Housing SEPP still apply where not overridden by Western Parkland City SEPP airport provisions. See our pillar guide on NSW granny flat CDC vs DA pathways for baseline compliance concepts separate from airport overlays.

Confirm setbacks, fees and supplier inclusions with your council or certifier before you sign. SEPP, CDC and DA pathways differ by state, lot size and overlays such as heritage or flood. Use our planning tools for ballpark figures, then verify with a private certifier or council planner when your design is settled.

Practical next steps for landowners

Obtain a contour check against official ANEC mapping before paying for plans. Budget for acoustic glazing and qualified certifier review. Some locations can still need development application rather than complying development depending on zone and lot constraints Scully flagged for edge cases and RU2 land.

Do not assume Brisbane or Melbourne airport rules mirror WSI; this change is Western Parkland City SEPP specific.

Confirm setbacks, fees and supplier inclusions with your council or certifier before you sign. SEPP, CDC and DA pathways differ by state, lot size and overlays such as heritage or flood. Use our planning tools for ballpark figures, then verify with a private certifier or council planner when your design is settled.

Timeline and planning reality

can 2026 policy change does not mean instant construction. Certifier availability, acoustic product lead times, and council pre-lodgement queues still govern how fast land becomes a finished granny flat. Owners who waited years under the ban should resist rushing designs that skip contour verification or acoustic schedules.

Design and builder selection

Choose designers and kit suppliers familiar with airport overlay documentation, not only standard Housing SEPP granny flat templates. Ask for examples of 85 sqm layouts that meet attenuation requirements without wasting floor area on oversized wet areas. Compare complying development eligibility early so you do not pay for full DA drawings on lots that only qualify for one pathway.

Our NSW CDC vs DA guide explains baseline approval concepts separate from Western Sydney airport layers.

Community and neighbour context

Western Sydney landowners commonly plan granny flats for multigenerational living rather than speculative development. Council and state messaging emphasises housing choice in a fast-growing corridor. Neighbour conversations about construction access, parking, and noise during build still matter even when policy supports secondary dwellings in your contour.

This article does not provide rental yield, tax, or financing advice. Speak to qualified professionals for those decisions.

Confirm setbacks, fees and supplier inclusions with your council or certifier before you sign. SEPP, CDC and DA pathways differ by state, lot size and overlays such as heritage or flood. Use our planning tools for ballpark figures, then verify with a private certifier or council planner when your design is settled.

Western Sydney International Airport opening context

WSI opening timelines influence how planners treat noise contours and housing compatibility. The can 2026 reform reflects updated long-term modelling rather than a one-day noise reading. Landowners should expect ongoing policy refinement as operations mature and flight paths stabilise.

Stay informed through NSW Planning releases and council updates in your LGA rather than relying on social media maps of uncertain provenance.

Confirm setbacks, fees and supplier inclusions with your council or certifier before you sign. SEPP, CDC and DA pathways differ by state, lot size and overlays such as heritage or flood. Use our planning tools for ballpark figures, then verify with a private certifier or council planner when your design is settled.

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