Sydney’s brand new motorway traverses through five suburbs, prompting questions about how residents will be impacted by the noise and activity of the road and whether the value of their homes will be affected.
Set to open on Saturday morning, the 16km M12 will connect Elizabeth Dr to The Northern Rd, operating as a 100 km/h passage that provides access to the new Western Sydney International Airport.
It will pass through the suburb boundaries of Cecil Park, Mount Vernon, Kemps Creek, Badgerys Creek and Luddenham.
The M12 Motorway is set to open on Saturday morning. Picture: Supplied
NSW Premier Chris Minns said communities in Western Sydney “deserve this world-class infrastructure”, which he said would ease pressure on local roads, cut travel times and improve connectivity with the rest of Sydney’s road network.
“From Saturday, thousands of motorists will have the chance to use this new motorway for the very first time to more quickly and easily get to where they need to go,” he said.
Ray White United Group sales executive Luke Wilson said the immediate effect of the motorway on the community “won’t be overly negative”, with the areas the M12 traverses through being “primarily rural and agricultural”.
“However, we know that as the airport opens and gains further traction, more and more heavy vehicles will use that particular route,” he said.
“While we can’t predict the future, it is safe to say that over time, the noise and condition of the roads due to heavy vehicle use may face debate or scrutiny.”
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The $2.1bn motorway cuts through five Sydney suburbs. Picture: Supplied
Over the course of the project, Mr Wilson said liveability for local residents who own on acreages has been “significantly changed” to accommodate years of infrastructure planning.
“This has both a positive and negative effect, as people have been forced to sell their properties to make way for what is coming,” he said.
“Statistically, where infrastructure goes, residential growth follows.”
Mr Wilson said there was a “negative connotation” around such projects on a local scale, as people were uprooted to make way for planning changes.
However, he noted that evidence supports residential growth when motorways have been constructed, pointing to the example of the M7 in Sydney’s West.
“Key areas into The Hills District and along the south west corridor over time have risen more than the average due to demand to be close to key motorway entry and exits,” Mr Wilson said.
“Another key example is the Kent St entry and exit off the M4 into Claremont Meadows.
“It has supported growth in not only Claremont Meadows, but neighbouring suburbs such as Caddens and Kingswood, with purchasers looking to buy in newer suburbs but be supported by transport infrastructure making their commute easier.”
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This home in Luddenham, one of the suburbs close to the motorway, sold for $2.52m in February
Luddenham has a median house price of $2.92m
According to Mr Wilson, while suburbs along the M12 corridor may not see an immediate impact on property prices, having access to a direct motorway in and out of a key landmark in Western Sydney, over time, will have a positive impact on the value of homes in the area.
“As more residential and industrial is built in key suburbs, the attraction statistically increases on already constructed products for families and investors alike,” he said.
Across the five suburbs the M12 passes through (excluding Badgerys Creek), the median house prices averages out to $3.78m, with recent sales in the area largely offering sizeable blocks.
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This Luddenham block sold for $7m in November 2025
The $2.1bn M12 project has been funded with a $1.63bn investment from the Albanese Government and a $408m investment from the Minns Labor Government and is expected to take around 25,000 vehicles a day off local roads
The motorway was constructed over a period of four years, in a process that used around 181,933 cubic metres of concrete – equivalent to 73 Olympic pools – according to the NSW Government.
According to Mr Wilson, the construction of the motorway “hasn’t had an overly positive nor negative impact on residents”.
“It has affected commuters more, but this impact isn’t drastic given its location and the current lack of residences in that area,” he said.
The final component of the M12, an interchange connecting with the M7 at Cecil Hills, “remains on track” to open mid-year, according to the state government.
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