A "sinkhole" has opened up outside a multimillion-dollar mansion in the Sydney harbourside suburb of Point Piper, swallowing the footpath and grass verge following a day of drenching rain.
Residents on Wentworth Street called triple zero about 7.10am on Wednesday to report that a "large sinkhole" had opened up due to wet conditions, a Fire and Rescue NSW spokeswoman said.
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Sinkhole opens up near PM's house
Emergency services are at the site of a giant sinkhole, which has opened up in Point Piper, near Malcolm Turnbull's Sydney home.
Firefighters arrived a short time later to find that the underground gas pipe had been ruptured.
Aerial footage showed a large area of footpath and grass beside a driveway had collapsed into the hole.
![Road crews assess the damage after the footpath collapsed in Point Piper.](/web/20170208015325im_/http://www.theage.com.au/content/dam/images/g/u/7/w/2/l/image.related.articleLeadwide.620x349.gu7v3v.png/1486515222432.jpg)
Firefighters blocked off a section of Wentworth Street, which is less than a kilometre from Prime Minister Malcolm Turnbull's house.
The spokeswoman said the property immediately next to the hole was vacant, and no one was injured.
The mansion next to the site is on the market with an asking price of $11.5 million. The "luxury family home with expansive water views" is listed as having six bedrooms, eight bathrooms, a six-car garage and two lap pools, as well as views across Rose Bay.
Kristy Mirzikinian, who lives on Wentworth Street, said she could smell gas on Tuesday afternoon, and workmen came and were "banging around, breaking down the concrete" at the site.
![Four houses have been evacuated after the ground collapsed in Point Piper on Wednesday morning.](/web/20170208015325im_/http://www.theage.com.au/content/dam/images/g/u/7/w/2/i/image.related.articleLeadwide.620x349.gu7v3v.png/1486515222432.jpg)
She said she woke on Wednesday to discover the hole had opened up.
"I'm just in shock. I can't believe [there is] a hole right across the street from my house," she said.
![The hole on Wentworth Street in Point Piper.](/web/20170208015325im_/http://www.theage.com.au/content/dam/images/g/u/7/u/e/1/image.related.articleLeadwide.620x349.gu7v3v.png/1486515222432.jpg)
"This doesn't normally happen. My personal trainer has come, my electricity is off and now I don't know what to do.
"I just want to know what's happening, how do they fix it, when it's going to be normal."
About 8.20am on Wednesday, a firefighter was lowered into the hole to clamp off the gas supply and the site has since been handed over to Woollahra Municipal Council, the Fire and Rescue NSW spokeswoman said.
A council spokeswoman said four houses near the site were evacuated and geotechnical engineers would assess the general safety of the area.
Police were diverting traffic at the scene, she said.
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